COOL-LINE PT 1310 Pizza Table User Manual

COOL-LINE PT 1310 Pizza Table

Product Information

Specifications

• Product Name: COOL-LINE Pizzatisch Serie PT
• Operating Voltage: 220-240 V/50 Hz
• Refrigerant: R290/R600a

Product Usage Instructions

Important Safety Instructions
Make sure of good ventilation around the appliance due to the flammable refrigerant content. Do not use mechanical devices for defrosting to prevent leakage. Avoid using electrical appliances inside the storage compartment. All repairs must be done by a skilled technician.

Unpacking and Installation
Remove the wooden pallet and packing materials. Remove the protective foil on external surfaces before installation. Ensure the cabinet is level for correct function; adjust legs if necessary.

Electrical Connection
The cabinet operates on 220-240 V/50 Hz. Follow local electrical authority requirements for earthing. Contact a supplier or electrician for assistance if needed. Skilled electricians should handle main electrical connections.

Start-up of the Cabinet
Clean the cabinet before use as per maintenance instructions. If horizontally placed during transport, wait 2 hours before starting it up.

Thermostat
The thermostat is located in the control panel for temperature regulation.

FAQ

• Q: Can I use electrical appliances inside the refrigerated storage compartment?
  

  • A: No, it is not recommended to use electrical appliances inside the refrigerated storage compartment to prevent any safety hazards.

COOL-LINE Pizzatisch Serie PT

IMPORTANT SAFETY INSTRUCTIONS

1. To get the best out of your cabinet, read these instructions thoroughly.
2. The user is responsible for correct use of the cabinet in accordance with instructions.
3. Contact your dealer immediately in the event of faults.
4. Place cabinet in a dry, well ventilated room.
5. Do not place close to sources of heat or in direct sunlight.
6. NB: all electrical appliances can be hazardous.
7. Do not store explosive substances such as gas, petrol, ether or the like in the cabinet.
8. No asbestos or CFC has been used in manufacture.
9. The compressor oil does not contain PCB.

ONLY FOR APPLIANCES WITH REFRIGERANT R290/R600a!

• This appliance contains a flammable refrigerant, so make sure of good ventilation around the appliance. Do not use mechanical devices when defrosting, this can cause leakage of the cooling system. Do not use electrical appliances inside the refrigerated storage compartment.
• Any repair of the appliance should be carried out by a skilled technician (EN 60335-2-89: 2010).

Important !
The base of this cabinet is designed for storage of hermetically sealed containers containing processed food (EN 16825).

UNPACKING AND INSTALLATION
Remove the wooden pallet and the packing. External surfaces are supplied with a protection foil, which must be removed before installation.
To ensure correct function it is important that the cabinet is level. If the cabinet is supplied with legs, these can be adjusted.

ELECTRICAL CONNECTION

• The cabinet operates on 220-240 V/50 Hz.
• The wall socket should be easily accessible.
• All earthing requirements stipulated by the local electricity authorities must be observed. The cabinet plug and wall socket should then give correct earthing. If in doubt, contact your local supplier or authorized electrician.
• The main electrical connections must be done by skilled electricians.

START-UP OF THE CABINET
Before use, we recommend that the cabinet is cleaned, see the section on maintenance and cleaning.

Important !
If the cabinet has been horizontally placed during transport, please wait 2 hours before starting up the cabinet.

THERMOSTAT

The thermostat is placed in the control panel.

The thermostat has been pre-set and in most cases it is not necessary to adjust the settings. When turning on the cabinet the display will show the current temperature in the cabinet. Display set temperature:

SET Press this key and the display will show the set temperature. Press the key again to return to normal reading

Set new temperature

SET Press this key continuously for more than 3 seconds and the display shows the set temperature. (The ‘°C’ LED is flashing)
Press this key to increase the set temperature.
Press this key to lower the set temperature.
SET Press this key to save the new settings. The display will flash with the new value and will then return to normal reading.

Keyboard lock/unlock

Press these keys simultaneously for 5 seconds. To lock the display reads ‘PoF’. To unlock the display reads ‘Pon’.

Alarm codes

• P1 Flashing in the display: indicates that the cabinet sensor is defective.
• P2 Flashing in the display: indicates that the evaporator sensor is defective.

CHANGING OF PARAMETERS

See table of parameters from page 74.

DEFROSTING
The cabinet defrosts automatically with pre-set intervals. If the door to the cabinet is opened or the contents of the cabinet is changed frequently it may become necessary to defrost the cabinet manually.

Pressing this key continuously for more than 3 seconds will start a manual defrosting and then return to normal operation.

Defrosted water runs to a container placed in the compressor compartment and evaporates.

CLEANING AND MAINTENANCE

• Switch off the electrical connection at the socket.
• The cabinet must be periodically cleaned. Clean the external and internal surfaces of the cabinet with a light soap solution and subsequently wipe dry.
• Do not spray the appliance with direct jets of water or using high pressure appliances.
• Do NOT use cleansers containing chlorine or other harsh cleansers, as these can damage the surfaces and the internal cooling system.
• Clean the condenser and the compressor compartment using a vacuum cleaner and a stiff brush.

SERVICE

• The cooling system is a hermetically sealed system and does not require supervision, only cleaning.
• If the cabinet fails to cool, check if the reason is a power cut.
• If you cannot locate the reason to the failure of the cabinet, please contact your supplier. Please inform model and serial number of the cabinet. You can find this information on the rating label which is placed inside the cabinet in the top right hand side.

DISPOSAL
Disposal of the cabinet must take place in an environmentally correct way. Please note existing regulation on disposal. There may be special requirements and conditions which must be observed.

COOLERS

1. 2 Door frame heater (Replacement in cabinet)
2. 5 Evaporator fan
3. 7 Condenser fan
4. 8 Compressor
5. 10 Evaporator probe
6. 11 Cabinet probe

FREEZERS

1. 2 Door frame heater (Replacement in cabinet)
2. 5 Evaporator fan
3. 7 Condenser fan
4. 8 Compressor
5. 9 Defrost heater
6. 10 Evaporator probe
7. 11 Cabinet probe

Installing and operating instructions

Digital controller with off cycle defrost and auxiliary relay

XW20LR –XW20LRH

GENERAL WARNING

PLEASE READ BEFORE USING THIS MANUAL

• This manual is part of the product and should be kept near the instrument for easy and quick reference.
• The instrument shall not be used for purposes different from those described hereunder. It cannot be used as a safety device.
• Check the application limits before proceeding.
• Dixell Srl reserves the right to change the composition of its products, even without notice, ensuring the same and unchanged functionality.

SAFETY PRECAUTIONS

• Check the supply voltage is correct before connecting the instrument.
• Do not expose to water or moisture: use the controller only within the operating limits avoiding sudden temperature changes with high atmospheric humidity to prevent formation of condensation
• Warning: disconnect all electrical connections before any kind of maintenance.
• Fit the probe where it is not accessible by the End User. The instrument must not be opened.
• In case of failure or faulty operation send the instrument back to the distributor or to “Dixell S.r.l.” (see address) with a detailed description of the fault.
• Consider the maximum current which can be applied to each relay (see Technical Data).
• Ensure that the wires for probes, loads and the power supply are separated and far enough from each other, without crossing or intertwining.
• In case of applications in industrial environments, the use of mains filters (our mod. FT1) in parallel with inductive loads could be useful.
• Dixell Srl reserves the right to change the composition of its products, even without notice, ensuring the same and unchanged functionality.

 GENERAL DESCRIPTION

• Model XW20LR, XW20LRH, format 38x185mm, is a digital thermostat with off cycle defrost designed for refrigeration applications at medium and low temperature. It has 2 relay outputs, one to control compressor and the other (configurable) to control light, auxiliary or alarm. It could be provided with a Real Time Clock which allows programming of up to 6 daily defrost cycles, divided into holidays and workdays. A “Day and Night” function with two different set points is fitted for energy saving. It is also provided with up to three NTC or PTC probe inputs, the first one for temperature control, the second one, to be located onto the evaporator and to control the defrost termination temperature. The third probe is used to signal the condenser temperature alarm or to display a temperature. One of the 2 digital inputs can operate as fourth probe input.
• The HOT KEY output allows to connect the unit, by means of the external module XJ485-CX, to a network line ModBUS-RTU compatible such as the dIXEL monitoring units of X-WEB family. It allows to program the controller by means the HOT KEY programming keyboard.
• The instrument is fully configurable through special parameters that can be easily programmed through the keyboard.

CONTROLLING LOADS

COMPRESSOR
The regulation is performed according to the temperature measured by the thermostat probe with a positive differential from the set point: if the temperature increases and reaches set point plus differential the compressor is started and then turned off when the temperature reaches the set point value again.

In case of fault in the thermostat probe the start and stop of the compressor are timed through parameters “COn” and “COF”.

DEFROST
Defrost is performed through a simple stop of the compressor. The defrost interval depends on the presence of the RTC (optional). If the RTC is present is controlled by means of parameter “EdF”:

• with EdF=in the defrost is made every “IdF” time – standard way for controller without RTC.
• with EdF = “rtc”, the defrost is made in real time depending on the hours set in the parameters Ld1..Ld6 on workdays and in Sd1…Sd6 in holidays;

Other parameters are used to control defrost cycles: its maximum length (MdF) and two defrost modes: timed or controlled by the evaporator’s probe (P2P).

AUXILIARY RELAY CONFIGURATION – TERM.5-6/7, PAR. OA1
The functioning of the auxiliary relay (terminals. 5-6/7) can be set by the oA1 parameter, according to the kind of application. In the following paragraph the possible setting:

Light relay – oA1= Lig
With oA1 = Lig, the 5-6/7 relay is set as light. It is activated by key or when i1F = dor.

Alarm relay – oA1= AUS
There are 2 possibilities:

• Activation via digital input (oA1 = AUS, i1F or i2F = AUS)
  With oA1 = AUS and i2F or i1F = AUS the relay 5-6/7 is activated via digital input and remains ON until the digital input is activated or is silenced by pressing any key.

• Auxiliary thermostat (es. anti-sweat heaters) Parameters involved

  • ACH Type of regulation: heating/cooling;
  • SAA Set point auxiliary relay
  • SHy Differential for auxiliary relay
  • ArP Probe for auxiliary relay
  • Sdd Auxiliary output off during defrost

By means of these 5 parameters the functioning of the auxiliary relay can be set.

NOTE: Set oA1 =AUS and ArP= nP (no probe for auxiliary output).

In this case the relay 5-6/7 can be activated only by digital input with i1F or i2F = AUS.

On/off relay – oA1 = onF
In this case the relay is activated when the controller is turned on and de- activated when the controller is in stand-by mode.

Neutral zone regulation
With oA1 = db the relay 5-6/7 can control a heater element to perform a neutral zone action.

• oA1 cut in = SET-HY
• oA1 cut out = SET

Second compressor
With oA1 = CP2, the relay 5-6/7 operates as second compressor: it is activated in parallel with the relay of the first compressor, with a possible delay set in the AC1 parameter. Both the relays are switched off at the same time.

Alarm relay

• With oA1 = ALr the relay 5-6/7 operates as alarm relay. It is activated every time an alarm happens. Its status depends on the tbA parameter:
• With “tbA = y”, the relay is silenced by pressing any key.
• With “tbA = n”, the alarm relay remains on until the alarm condition recovers.

Night blind management during energy saving cycles
With oA1 = HES, the relay 5-6/7 operates to manage the night blind: the relay is energized when the energy saving cycle is activated, by digital input, frontal button or RTC (optional).

FRONT PANEL COMMANDS

• SET : To display target set point; in programming mode it selects a parameter or confirm an operation.
• (DEF) To start a manual defrost.
• (UP): To see the max. stored temperature; in programming mode it browses the parameter codes or increases the displayed value.
• (DOWN) To see the min stored temperature; in programming mode it browses the parameter codes or decreases the displayed value.
• To switch the instrument off, if onF = OFF.
• To switch the light, if oA1 = Lig.

KEY COMBINATIONS

•  To lock & unlock the keyboard.
• To enter in programming mode.
• To return to the room temperature display.

USE OF LEDS
Each LED function is described in the following table.

MAX & MIN TEMPERATURE MEMORIZATION

HOW TO SEE THE MIN TEMPERATURE

1. Press and release the key.
2. The “Lo” message will be displayed followed by the minimum temperature recorded.
3. By pressing the  key again or by waiting 5s the normal display will be restored.

HOW TO SEE THE MAX TEMPERATURE

1. Press and release the  key.
2. The “Hi” message will be displayed followed by the maximum temperature recorded.
3. By pressing the key again or by waiting 5s the normal display will be restored.

HOW TO RESET THE MAX AND MIN TEMPERATURE RECORDED

1. Hold press the SET key for more than 3s, while the max. or min temperature is displayed. (rSt message will be displayed)
2. To confirm the operation the “rSt” message starts blinking and the normal temperature will be displayed.

MAIN FUNCTIONS

TO SET THE CURRENT TIME AND DAY (ONLY FOR INSTRUMENTS WITH RTC)
When the instrument is switched on, it’s necessary to program the time and day.

1. Enter the Pr1 programming menu, by pushing the SET + n keys for 3s.
2. The rtc parameter is displayed. Push the SET key to enter the real time clock menu.
3. The Hur (hour) parameter is displayed.
4. Push the SET and set current hour by the UP and Down keys, then push SET to confirm the value..
5. Repeat the same operations on the Min (minutes) and dAy (day) parameters.

To exit: Push SET+UP keys or wait for 15 sec without pushing any keys.

HOW TO SEE THE SET POINT

1. Push and immediately release the SET key: the display will show the Set point value;
2. Push and immediately release the SET key or wait for 5 seconds to display the probe value again.

HOW TO CHANGE THE SET POINT

1. Push the SET key for more than 2 seconds to change the Set point value;
2. The value of the set point will be displayed and the “°C” LED starts blinking;
3. To change the Set value push the o or n arrows within 10s.
4. To memories the new set point value push the SET key again or wait 10s.

HOW TO START A MANUAL DEFROST

Push the DEF key for more than 2 seconds and a manual defrost will start.

HOW TO CHANGE A PARAMETER VALUE
Push the DEF key for more than 2 seconds and a manual defrost will start.

To change the parameter’s value operate as follows

1. Enter the Programming mode by pressing the Set + keys for 3s (the “°C” LED starts blinking).
2. Select the required parameter. Press the “SET” key to display its value
3. Use “UP” or “DOWN” to change its value.
4. Press “SET” to store the new value and move to the following parameter.
   To exit: Press SET + UP or wait 15s without pressing a key.

NOTE: the set value is stored even when the procedure is exited by waiting the time-out to expire.

THE HIDDEN MENU
The hidden menu Includes all the parameters of the instrument.

HOW TO ENTER THE HIDDEN MENU

1. Enter the Programming mode by pressing the Set + keys for 3s (the “°C” LED starts blinking).

2. Released the keys, then push again the Set+ keys for more than 7s. The Pr2 label will be displayed immediately followed from the HY parameter.
   NOW YOU ARE IN THE HIDDEN MENU.

3. Select the required parameter.

4. Press the “SET” key to display its value

5. Use o or n to change its value.

6. Press “SET” to store the new value and move to the following parameter.

To exit : Press SET + o or wait 15s without pressing a key.

NOTE1: if none parameter is present in Pr1, after 3s the “noP” message is displayed. Keep the keys pushed till the Pr2 message is displayed.

NOTE2: the set value is stored even when the procedure is exited by waiting the time-out to expire.

HOW TO MOVE A PARAMETER FROM THE HIDDEN MENU TO THE FIRST LEVEL AND VICEVERSA.
Each parameter present in the HIDDEN MENU can be removed or put into “THE FIRST LEVEL” (user level) by pressing “SET + In HIDDEN MENU when a parameter is present in First Level the decimal point is on.

HOW TO LOCK THE KEYBOARD

1. Keep pressed for more than 3 s the UP + DOWN keys.
2. The “POF” message will be displayed and the keyboard will be locked. At this point it will be possible only to see the set point or the MAX o Min temperature stored
3. If a key is pressed more than 3s the “POF” message will be displayed.

TO UNLOCK THE KEYBOARD
Keep pressed together for more than 3s the o and n keys, till the “Pon” message will be displayed.

THE CONTINUOUS CYCLE
When defrost is not in progress, it can be activated by holding the “o” key pressed for about 3 seconds. The compressor operates to maintain the “ccS” set point for the time set through the “CCt” parameter. The cycle can be terminated before the end of the set time using the same activation key “ ” for 3 seconds.

THE ON/OFF FUNCTION

With “onF = oFF”, pushing the ON/OFF key, the instrument is switched off. The “OFF” message is displayed. In this configuration, the regulation is disabled.
To switch the instrument on, push again the ON/OFF key.

WARNING: Loads connected to the normally closed contacts of the relays are always supplied and under voltage, even if the instrument is in stand by mode.

PARAMETERS

Real time clock menu (only for controller with RTC): to set the time and date and defrost start time.

REGULATION

• Hy Differential: (0,1 ÷ 25,5°C / 1÷255 °F) Intervention differential for set point. Compressor Cut IN is
• Set Point + differential (Hy). Compressor Cut OUT is when the temperature reaches the set point.
• LS Minimum set point: (- 50°C÷SET/-58°F÷SET): Sets the minimum value for the set point.
• US Maximum set point: (SET÷110°C/ SET÷230°F). Set the maximum value for set point.
• Ot Thermostat probe calibration: (-12.0÷12.0°C; -120÷120°F) allows to adjust possible offset of the thermostat probe.
• P2P Evaporator probe presence: n= not present: the defrost stops by time; y= present: the defrost stops by temperature.
• OE Evaporator probe calibration: (-12.0÷12.0°C; -120÷120°F). allows to adjust possible offset of the evaporator probe.
• P3P Third probe presence (P3): n= not present:, the terminals 13-14 operate as digital input.; y= present:, the terminals 13-14 operate as third probe.
• O3 Third probe calibration (P3): (-12.0÷12.0°C; -120÷120°F). allows to adjust possible offset of the third probe.
• OdS Outputs activation delay at start up: (0÷255min) This function is enabled at the initial start up of the instrument and inhibits any output activation for the period of time set in the parameter.
• AC Anti-short cycle delay: (0÷50 min) minimum interval between the compressor stop and the following restart.
• AC1 2nd compressor delay at start up (0÷255s) Used only if oA3 = cP2 Time interval between the switching on of the first compressor and the second one.
• rtr Percentage of the second and first probe for regulation (0÷100; 100 = P1, 0 = P2 ): it allows to set the regulation according to the percentage of the first and second probe, as for the  following
• formula (rtr(P1-P2)/100 + P2).
• CCt Compressor ON time during continuous cycle: (0.0÷24.0h; res. 10min) Allows to set the length of the continuous cycle: compressor stays on without interruption for the CCt time. Can be used, for
• instance, when the room is filled with new products.
• CCS Set point for continuous cycle: (-50÷150°C) it sets the set point used during the continuous cycle.
• COn Compressor ON time with faulty probe: (0÷255 min) time during which the compressor is active in case of faulty thermostat probe. With COn=0 compressor is always OFF.
• COF Compressor OFF time with faulty probe: (0÷255 min) time during which the compressor is
• OFF in case of faulty thermostat probe. With COF=0 compressor is always active.
• CH Type of action: CL = cooling; Ht = heating.

DISPLAY

• CF Temperature measurement unit: °C=Celsius; °F=Fahrenheit. WARNING: When the
  measurement unit is changed the SET point and the values of the parameters Hy, LS, US, Ot, ALU and ALL have to be checked and modified if necessary).

• rES Resolution (for °C): (in = 1°C; dE = 0.1 °C) allows decimal point display.

• Lod Instrument display : (P1; P2, P3, P4, SET, dtr): it selects which probe is displayed by the instrument: P1 = Thermostat probe; P2 = Evaporator probe; P3 = Third probe(only for model with this option enabled); P4 = Fourth probe, SET = set point; dtr = percentage of visualization.

• rEd X- REP display (optional): (P1; P2, P3, P4, SET, dtr): it selects which probe is displayed by X- REP: P1 = Thermostat probe; P2 = Evaporator probe; P3 = Third probe(only for model with this

• option enabled); P4 = Fourth probe, SET = set point; dtr = percentage of visualization.
  dLy Display delay: (0 ÷20.0m; result. 10s) when the temperature increases, the display is updated of 1 °C/1°F after this time.

• dtr Percentage of the second and first probe for visualization when Lod = dtr (0÷100; 100 =  P1, 0 = P2 ): if Lod = dtr it allows to set the visualization according to the percentage of the first and second probe, as for the following formula (dtr(P1-P2)/100 + P2).

DEFROST

• EdF Defrost mode (only for controller with RTC): rtc = Real Time Clock mode. Defrost time follows Ld1÷Ld6 parameters on workdays and Sd1÷Sd6 on holidays.
• in = interval mode. The defrost starts when the time “Idf” is expired.
• dFP Probe selection for defrost termination : nP = no probe; P1 =thermostat probe; P2 = evaporator probe; P3 =configurable probe; P4 = fourth probe.
• dtE Defrost termination temperature: (-50÷50 °C/ -58÷122°F) (Enabled only when EdF=Pb) sets  the temperature measured by the evaporator probe, which causes the end of defrost.
• IdF Interval between defrost cycles : (0÷120h) Determines the time interval between the beginning of two defrost cycles.
• MdF (Maximum) length for defrost: (0÷255min) When P2P = n, (not evaporator probe: timed  defrost) it sets the defrost duration, when P2P = y (defrost end based on temperature) it sets the maximum length for defrost.
• dFd Temperature displayed during defrost: (rt = real temperature; it = temperature at defrost start
• SEt = set point; dEF = “dEF” label)
• dAd MAX display delay after defrost : (0÷120min). Sets the maximum time between the end of defrost and the restarting of the real room temperature display.

AUXILIARY THERMOSTAT CONFIGURATION (terms. 5-67/) – OA1 = AUS

• ACH Kind of regulation for auxiliary relay: Ht = heating; CL = cooling
• SAA Set Point for auxiliary relay: (-50,0÷110,0°C; -58÷230°F) it defines the room temperature set point to switch auxiliary relay.
• SHy Differential for auxiliary output: (0,1 ÷ 25,5°C / 1÷255 °F) Intervention differential for auxiliary output set point.
• With ACH = cL AUX Cut in is SAA + SHy; . AUX Cut out is SAA With ACH = Ht AUX Cut in is SAA – SHy; . AUX Cut out is SAA
• ArP Probe selection for auxiliary: nP = no probe, the auxiliary relay is switched only by button;
• P1 = Probe 1 (Thermostat probe); P2 = Probe 2 (evaporator probe); P3 = Probe 3 (display probe);  P4 = Probe 4 fourth probe.
• Sdd Auxiliary relay off during defrost: n = the auxiliary relay 5-6/7 operates during defrost.
• y = the auxiliary relay 5-6/7 is switched off during defrost.

ALARMS

• ALP Probe selection for alarm: P1 = Probe 1; P2 = Probe 2; P3 = Probe 3; P4 = Fourth probe.
• ALC Temperature alarms configuration: (Ab; rE)
• Ab= absolute temperature: alarm temperature is given by the ALL or ALU values.
• rE = temperature alarms are referred to the set point. Temperature alarm is enabled when the temperature exceeds the “SET+ALU” or “SET-ALL” values.
• ALU MAXIMUM temperature alarm: (SET÷110°C; SET÷230°F) when this temperature is reached the alarm is enabled, after the “ALd” delay time.
• ALL Minimum temperature alarm: (-50.0 ÷ SET °C; -58÷230°F when this temperature is reached the alarm is enabled, after the “ALd” delay time.
• AFH Differential for temperature alarm recovery: (0,1÷25,5°C; 1÷45°F) Intervention differential for recovery of temperature alarm.
• ALd Temperature alarm delay: (0÷255 min) time interval between the detection of an alarm condition and alarm signaling.
• dAO Exclusion of temperature alarm at start-up: (from 0.0 min to 23.5h) time interval between the detection of the temperature alarm condition after instrument power on and alarm signaling.

CONDENSER TEMPERATURE ALARM

• AP2 Probe selection for temperature alarm of condenser: nP = no probe; P1 =thermostat probe;
• P2 = defrost termination probe; P3 =configurable probe; P4 = fourth probe.
• AL2 Low temperature alarm of condenser: (-55÷150°C) when this temperature is reached the LA2 alarm is signaled, possibly after the Ad2 delay.
• Au2 High temperature alarm of condenser: (-55÷150°C) when this temperature is reached the HA2 alarm is signaled, possibly after the Ad2 delay.
• AH2 Differential for temperature condenser alarm recovery: (0,1÷25,5°C; 1÷45°F)
• Ad2 Condenser temperature alarm delay: (0÷255 min) time interval between the detection of the condenser alarm condition and alarm signaling.
• dA2 Condenser temperature alarm exclusion at start up: (from 0.0 min to 23.5h, res. 10min) bLL Compressor off with low temperature alarm of condenser: n = no: compressor keeps on working; Y =  yes, compressor is switched off till the alarm is present, in any case regulation restarts after AC time at minimum.
• AC2 Compressor off with high temperature alarm of condenser: n = no: compressor keeps on working; Y = yes, compressor is switched off till the alarm is present, in any case regulation restarts after
• AC time at minimum.

AUXILIARY RELAY

• tbA Alarm relay silencing (with oA1 =ALr):
  n= silencing disabled: alarm relay stays on till alarm condition lasts,
  y =silencing enabled: alarm relay is switched OFF by pressing a key during an alarm

• oA1 Second relay configuration (5-6/7): dEF, FAn: do not select it!. ALr: alarm; Lig: light; AuS: Auxiliary relay; onF: always on with instrument on; db= neutral zone; cP2 = second compressor; dF2: do not select it!;. HES:. night blind

• AoP Alarm relay polarity: it set if the alarm relay is open or closed when an alarm happens. CL= terminals 1-4 closed during an alarm; oP = terminals 1-4 open during an alarm

DIGITAL INPUTS

• i1P Digital input polarity (13-14): o P: the digital input is activated by opening the contact; CL: the digital input is activated by closing the contact.

• i1F Digital input configuration (13-14): EAL= external alarm: “EA” message is displayed; bAL= serious alarm “CA” message is displayed. PAL= pressure switch alarm, “CA” message is displayed; dor= door switch function; dEF= activation of a defrost cycle; AUS= auxiliary relay for oA1 or oA4=AUS; Htr= kind of action inversion (cooling – heating); FAn= not set it; ES= Energy saving; HdF = Holiday defrost (enable only with RTC); onF = to switch the controller off.

• did (0÷255 min) with i1F= EAL or i1F = bAL digital input alarm delay (13-14): delay between the detection of the external alarm condition and its signalling.
  with i1F= dor: door open signalling delay
  with i1F= PAL: time for pressure switch function: time interval to calculate the number of the pressure switch activation.

• i2P 2nd digital input polarity (13-19) : oP: the digital input is activated by opening the contact; CL:
  the digital input is activated by closing the contact.
  i2F 2nd digital input configuration (13-19): EAL= external alarm: “EA” message is displayed; bAL=serious alarm “CA” message is displayed. PAL= pressure switch alarm, “CA” message is displayed; dor= door switch function; dEF= activation of a defrost cycle; AUS=not enabled; Htr= kind of action inversion (cooling – heating); FAn= not set it; ES= Energy saving; HdF = Holiday defrost (enable only with RTC); onF = to switch the controller off.

• d2d (0÷255 min) with i2F= EAL or i2F= bAL 2nd digital input alarm delay (13-19): delay between the detection of the external alarm condition and its signalling.

• with i2F = dor: door open signalling delay
  with i2F = PAL: time for pressure switch function: time interval to calculate the number of the pressure switch activation.

• nPS Pressure switch number: (0 ÷15) Number of activation of the pressure switch, during the “did” interval, before signalling the alarm event (I2F= PAL).
  If the nPS activation in the did time is reached, switch off and on the instrument to restart normal regulation.

• odc Compressor status when open door: no, Fan = normal; CPr, F_C = Compressor OFF.
  rrd Outputs restart after doA alarm: no= outputs not affected by the doA alarm; yES = outputs restart with the doA alarm.
  HES Temperature increase during the Energy Saving cycle: (-30,0°C÷30,0°C) it sets the odc Compressor status when open door: no, Fan = normal; CPr, F_C = Compressor OFF.
  rrd Outputs restart after doA alarm: no= outputs not affected by the doA alarm; yES = outputs
  restart with the doA alarm.
  HES Temperature increase during the Energy Saving cycle: (-30,0°C÷30,0°C) it sets the

TO SET CURRENT TIME AND WEEKLY HOLIDAYS (ONLY FOR MODELS WITH RTC)

• Hur Current hour (0 ÷ 23 h)
• Min Current minute(0 ÷ 59min)
• dAY Current day(Sun ÷ SAt)
• Hd1 First weekly holiday (Sun ÷ nu) Set the first day of the week which follows the holiday times.
• Hd2 Second weekly holiday (Sun ÷ nu) Set the second day of the week which follows the holiday times.
• N.B. Hd1,Hd2 can be set also as“nu” value (Not Used).

TO SET ENERGY SAVING TIMES (ONLY FOR MODELS WITH RTC)

• ILE Energy Saving cycle start during workdays: (0 ÷ 23h 50 min.) During the Energy Saving cycle the set point is increased by the value in HES so that the operation set point is SET + HES.
• dLE Energy Saving cycle length during workdays: (0 ÷ 24h 00 min.) Sets the duration of the Energy Saving cycle on workdays.
• ISE Energy Saving cycle start on holidays. (0 ÷ 23h 50 min.)
• dSE Energy Saving cycle length on holidays (0 ÷ 24h 00 min.)

TO SET DEFROST TIMES (ONLY FOR MODELS WITH RTC)

• Ld1÷ Ld6 Workday defrost start (0 ÷ 23h 50 min.) These parameters set the beginning of the 6
  programmable defrost cycles during workdays. Ex. When Ld2 = 12.4 the second defrost starts at 12.40 during workdays.

• Sd1 ÷Sd6 Holiday defrost start (0 ÷ 23h 50 min.) These parameters set the beginning of the 6 programmable defrost cycles on holidays. Ex. When Sd2 = 3.4 the second defrost starts at 3.40 on holidays.

• N.B. :To disable a defrost cycle set it to “nu”(not used). Ex. If Ld6=nu ; the sixth defrost cycle is disabled

OTHER

• Adr Serial address (1÷244): Identifies the instrument address when connected to a ModBUS compatible monitoring system.
• PbC Type of probe: it allows to set the kind of probe used by the instrument: PTC = PTC probe, ntc = NTC probe.
• onF on/off key enabling: nu = disabled; oFF = enabled; ES = not set it.
• dP1 Thermostat probe display
• dP2 Evaporator probe display
• dP3 Third probe display- optional.
• rSE Real set point: it shows the set point used during the energy saving cycle or during the continuous cycle.
• rEL Software release for internal use.
• Ptb Parameter table code: readable only.

DIGITAL INPUTS

• The first digital input is enabled with P3P = n.
• With P3P = n and i1F = i2F the second digital input is disabled
• The free voltage digital inputs are programmable by the “i1F” and i2F parameters.

GENERIC ALARM (i1F or i2F = EAL)
As soon as the digital input is activated the unit will wait for “did” time delay before signalling the “EAL” alarm message. The outputs status don’t change. The alarm stops just after the digital input is de-activated.

SERIOUS ALARM MODE (i1F or i2F = bAL)
When the digital input is activated, the unit will wait for “did” delay before signalling the “CA” alarm message. The relay outputs are switched OFF. The alarm will stop as soon as the digital input is de-activated.

PRESSURE SWITCH (i1F or i2F = PAL)
If during the interval time set by “did” parameter, the pressure switch has reached the number of activation of the “nPS” parameter, the “CA” pressure alarm message will be displayed. The compressor and the regulation are stopped. When the digital input is ON the compressor is always OFF. If the nPS activation in the did time is reached, switch off and on the instrument to restart normal regulation.

DOOR SWITCH INPUT (i1F or i2F = dor)
It signals the door status and the corresponding relay output status through the “odc” parameter: no, Fan = normal (any change); CPr, F_C = Compressor OFF.
Since the door is opened, after the delay time set through parameter “did”, the door alarm is enabled, the display shows the message “dA” and the regulation restarts is rtr = yES. The alarm stops as soon as the external digital input is disabled again. With the door open, the high and low temperature alarms are disabled.

START DEFROST (i1F or i2F = dEF)
It starts a defrost if there are the right conditions. After the defrost is finished, the normal regulation will restart only if the digital input is disabled otherwise the instrument will wait until the “MdF” safety time is expired.

SWITCH THE AUXILIARY RELAY (i1F or i2F = AUS)
With oA1 = AUS the digital input switched the status of the auxiliary relay

ENERGY SAVING (i1F or i2F = ES)
The Energy Saving function allows to change the set point value as the result of the SET+ HES (parameter) sum. This function is enabled until the digital input is activated.

HOLIDAY DEFROST (i1F or i2F = HDF) –ONLY FOR MODELS WITH RTC
This function enabled the holiday defrost setting.

ON OFF FUNCTION (i1F or i2F = onF)
To switch the controller on and off.

DIGITAL INPUTS POLARITY
The digital input polarity depends on the “i1P” and “i2P” parameters.

• i1P or i2P =CL: the input is activated by closing the contact.
• i1P or i2P=OP: the input is activated by opening the contact

TTL SERIAL LINE – FOR MONITORING SYSTEMS
The TTL serial line, available through the HOT KEY connector, allows by means of the external TTL/RS485 converter, XJ485-CX, to connect the instrument to a monitoring system ModBUS-RTU compatible such as the X-WEB500/3000/300.

X-REP OUTPUT – OPTIONAL
As optional, an X-REP can be connected to the instrument, trough the HOY KEY connector. The X-REP output EXCLUDES the serial connection.

To connect the X-REP to the instrument the following connectors must be used CAB-51F(1m), CAB-52F(2m), CAB-55F(5m),

INSTALLATION AND MOUNTING

The controller shall be mounted on vertical panel, in a 150×31 mm hole, and fixed using two screws ∅ 3 x 2mm (only for XW20LR).
XW20LR: to obtain an IP65 protection grade use the front panel rubber gasket (mod. RG-L). The temperature range allowed for correct operation is 0 – 60 °C. Avoid places subject to strong vibrations,

corrosive gases, excessive dirt or humidity. The same recommendations apply to probes. Let the air circulate by the cooling holes.

CUT OUT

STEEL FINISHING MOUNTING

ELECTRICAL CONNECTIONS
The instruments are provided with screw terminal block to connect cables with a cross section up to 2,5 mm2 for the digital and analogue inputs. Relays and power supply have a Faston connection (6,3mm). Heat-resistant cables have to be used. Before connecting cables make sure the power supply complies with the instrument’s requirements. Separate the probe cables from the power supply cables, from the outputs and the power connections. Do not exceed the maximum current allowed on each relay, in case of heavier loads use a suitable external relay.

N.B. Maximum current allowed for all the loads is 20A.

PROBE CONNECTION
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid infiltration. It is recommended to place the thermostat probe away from air streams to correctly measure the average room temperature. Place the defrost termination probe among the evaporator fins in the coldest place, where most ice is formed, far from heaters or from the warmest place during defrost, to prevent premature defrost termination.

HOW TO USE THE HOT KEY

HOW TO PROGRAM A HOT KEY FROM THE INSTRUMENT (UPLOAD)

1. Program one controller with the front keypad.
2. When the controller is ON, insert the “Hot key” and push o key; the “uPL” message appears followed a by flashing “End”
3. Push “SET” key and the End will stop flashing.
4. Turn OFF the instrument remove the “Hot Key”, then turn it ON again.

NOTE: the “Err” message is displayed for failed programming. In this case push again o key if you want to restart the upload again or remove the “Hot key” to abort the operation.

HOW TO PROGRAM AN INSTRUMENT USING A HOT KEY (DOWNLOAD)

1. Turn OFF the instrument.
2. Insert a programmed “Hot Key” into the 5 PIN receptacle and then turn the Controller ON.
3. Automatically the parameter list of the “Hot Key” is downloaded into the Controller memory, the “doL” message is blinking followed a by flashing “End”.
4. After 10 seconds the instrument will restart working with the new parameters.
5. Remove the “Hot Key”..

NOTE the message “Err” is displayed for failed programming. In this case turn the unit off and then on if you want to restart the download again or remove the “Hot key” to abort the operation.

ALARM SIGNALS

Defrosts according to par. “IdF” Set real time clock has to be set
rtF| Real time clock board failure| Alarm output ON; Other outputs unchanged; Defrosts according to par. “IdF” Contact the service

ALARM RECOVERY

• Probe alarms P1”, “P2” and “P4” start some seconds after the fault in the related probe; they automatically stop some seconds after the probe restarts normal operation. Check connections before replacing the probe.
• Temperature alarms “HA”, “LA” “HA2” and “LA2” automatically stop as soon as the temperature returns to normal values.
• Alarms “EA” and “CA” (with i1F=bAL) recover as soon as the digital input is disabled.
• Alarm “CA” (with i1F=PAL) recovers only by switching off and on the instrument.
• Real time clock alarm rtC, it stops as soon as the correct hour and day are set.
• Real time clock alarm rtF, the clock board has to be replaced. Contact the service.

14.2  OTHER MESSAGES

Pon| Keyboard unlocked.
PoF| Keyboard locked
noP| In programming mode : none parameter is present in Pr1

On the display or in dP2, dP3, dP4: the selected probe is nor enabled

TECHNICAL DATA

• Housing : self extinguishing ABS.
• Case: facia 38×185 mm; depth 40mm
• Mounting : panel mounting in a 150×31 mm panel cut-out.
• Only for XW20LR two screws. ∅ 3 x 2mm, distance between the holes 165mm Protection: IP20; Frontal protection: IP65 with frontal gasket mod RG-L or RG-LX. Connections: Screw terminal block ≤ 2,5 mm2 heat-resistant wiring and 6,3mm Faston Power supply: 230Vac or. 110Vac ± 10%, 50/60Hz.
• Power absorption : 7VA max.
• Display: 3 digits, red LED, 14,2 mm high.
• Inputs: Up to 3 NTC or PTC probes.
• Digital inputs: free voltage
• Relay outputs: Total current on loads MAX. 20A
• compressor: relay SPST 20(8) A, 250Vac
• light: relay SPST 8A, 250Vac
• Other output : buzzer (optional)
• Serial output : TTL standard; Communication protocol: Modbus – RTU
• Data storing: on the non-volatile memory (EEPROM).
• Internal clock back-up: 24 hours (only for model with RTC)
• Kind of action: 1B; Pollution grade: normal; Software class: A.;
• Over voltage Category: II
• Operating temperature: 0÷60 °C; Storage temperature: -30÷85 °C.
• Relative humidity: 20÷85% (no condensing)
• Measuring and regulation range: NTC probe: -40÷110°C (-40÷230°F);
• PTC probe: -50÷150°C (-58÷302°F)
• Resolution: 0,1 °C or 1 °F (selectable); Accuracy (ambient temp. 25°C): ±0,7 °C ±1 digit

CONNECTIONS

Models at 120Vac or 24Vac: connect to terminals 8-9.
NOTE: on models with X-REP option, connect the X-REP to the HOT KEY receptacle

DEFAULT SETTING VALUES

Pr2
Sdd| Auxiliary relay operating during defrost| n – Y| n| Pr2
ALP| Alarm probe selection| nP – P1 – P2 – P3 – P4| P1| Pr2
ALc| Temperat. alarms configuration| rE – Ab| Ab| Pr2
ALU| MAXIMUM temperature alarm| ALc=rE: 0.0÷ 50.0°C ALc=Ab: ALL÷150°C| 110,0| Pr1
ALL| Minimum temperature alarm| ALc = rE: 0.0÷50.0°C; ALc=Ab: – 55°C÷ALU| -50,0| Pr1
AFH| Differential for temperat. alarm recovery| (0,1°C ÷ 25,5°C)| 2,0| Pr2
ALd| Temperature alarm delay| 0 ÷ 255 (min.)| 15| Pr2
dAO| Delay of temperature alarm at start up| 0 ÷ 24.0 h ris. 10min| 1,3| Pr2
AP2| Probe for temperat. alarm of condenser| nP – P1 – P2 – P3 – P4| nP| Pr2
AL2| Condenser for low temperat. alarm| (-55.0°C ÷ 150,0°C)| -40| Pr2
AU2| Condenser for high temperat. alarm| (-55.0°C ÷ 150,0°C)| 110| Pr2
AH2| Differ. for condenser temp. alar. recovery| (0,1°C ÷ 25,5°C)| 5| Pr2
Ad2| Condenser temperature alarm delay| 0 ÷ 255 (min.)| 15| Pr2
dA2| Delay of cond. temper. alarm at start up| 0 ÷ 24H0(144)| 1,3| Pr2

bLL

| Compr. off for condenser low temperature alarm|

n – Y

| n| Pr2

AC2

| Compr. off for condenser high temperature alarm|

n – Y

| n| Pr2
tbA| Alarm relay disabling| n – Y| y| Pr2
oA1| Second relay configuration| dEF – FAn – ALr – LiG – AUS – OnF – db – CP2 – dF2 – HES| Lig| Pr2
AoP| Alarm relay polarity| OP – CL| cL| Pr2
i1P| Digital input polarity| OP – CL| cL| Pr1
i1F| Digital input 1 configuration| EAL – bAL – PAL – dor – dEF – AUS – Htr – FAn – ES-HdF – onF| dor| Pr1
did| Digital input alarm delay| 0 ÷ 255 (min.)| 15| Pr1
i2P| Digital input polarity| OP – CL| cL| Pr2
i2F| Digital input configuration| EAL – bAL – PAL – dor – dEF – AUS – Htr – FAn – ES-HdF – onF| EAL| Pr2
d2d| Digital input alarm delay| 0 ÷ 255 (min.)| 5| Pr2
Nps| Number of activation of pressure switch| 0 ÷ 15| 15| Pr2
odc| Compress status when open door| no – FAn – CPr – F-C| F-c| Pr2
rrd| Regulation restart with door open alarm| n – Y| y| Pr2
HES| Differential for Energy Saving| (-30°C ÷ 30°C)| 0| Pr2
Hur| Current hour| Read only| –| rtc
Min| Current minute| Read only| –| rtc
Label| Name| Range| Value| Level
---|---|---|---|---
dAY| Current day| Read only| –| rtc
Hd1| First weekly holiday| Sun ÷ SAt – nu| nu| rtc
Hd2| Second weekly holiday| Sun ÷ SAt – nu| nu| rtc
ILE| Energy Saving cycle start during workdays| 0 ÷ 23h5| 0| rtc
dLE| Energy Saving cycle length during workdays| 0 ÷ 24h0| 0| rtc
ISE| Energy Saving cycle start on holidays| 0 ÷ 23h5| 0| rtc
dSE| Energy Saving cycle length on holidays| 0 ÷ 24h0| 0| rtc
Ld1| 1st workdays defrost start| 0 ÷ 23H5;- nu| 6.0| rtc
Ld2| 2nd workdays defrost start| 0 ÷ 23H5;- nu| 13.0| rtc
Ld3| 3rd workdays defrost start| 0 ÷ 23H5;- nu| 21.0| rtc
Ld4| 4th workdays defrost start| 0 ÷ 23H5;- nu| 0.0| rtc
Ld5| 5th workdays defrost start| 0 ÷ 23H5;- nu| 0.0| rtc
Ld6| 6th workdays defrost start| 0 ÷ 23H5;- nu| 0.0| rtc
Sd1| 1st holiday defrost start| 0 ÷ 23H5;- nu| 6.0| rtc
Sd2| 2nd holiday defrost start| 0 ÷ 23H5;- nu| 13.0| rtc
Sd3| 3rd holiday defrost start| 0 ÷ 23H5;- nu| 21.0| rtc
Sd4| 4th holiday defrost start| 0 ÷ 23H5;- nu| 0.0| rtc
Sd5| 5th holiday defrost start| 0 ÷ 23H5;- nu| 0.0| rtc
**Sd6*| 6th holiday defrost start| 0 ÷ 23H5;- nu| 0.0| rtc
Adr| Serial address| 1 ÷ 247| 1| Pr2
PbC| Kind of probe| PtC – ntC| ntc| Pr2
onF| on/off key enabling| nu – OFF – ES| oFF| Pr2
dP1| Room probe display| Probe value| –| Pr2
dP2| Evaporator probe display| Probe value| –| Pr2
dP3| Third probe display| Probe value| –| Pr2
rSE| Real set point| Read only| –| Pr2
rEL| Software release| Read only| 1.8| Pr2
Ptb**| Map code| Read only| | Pr2

2 Only for model with X-REP output

• Only for model with real time clock

Digital controller with defrost, fans and auxiliary relay management

XW60LR –XW60LRH

GENERAL WARNING

PLEASE READ BEFORE USING THIS MANUAL

• This manual is part of the product and should be kept near the instrument for easy and quick reference.
• The instrument shall not be used for purposes different from those described hereunder. It cannot be used as a safety device.
• Check the application limits before proceeding.
• Dixell Srl reserves the right to change the composition of its products, even without notice, ensuring the same and unchanged functionality.

SAFETY PRECAUTIONS

• Check the supply voltage is correct before connecting the instrument.
• Do not expose to water or moisture: use the controller only within the operating limits avoiding sudden temperature changes with high atmospheric humidity to prevent formation of condensation
• Warning: disconnect all electrical connections before any kind of maintenance.
• Fit the probe where it is not accessible by the End User. The instrument must not be opened.
• In case of failure or faulty operation send the instrument back to the distributor or to “Dixell S.r.l.” (see address) with a detailed description of the fault.
• Consider the maximum current which can be applied to each relay (see Technical Data).
• Ensure that the wires for probes, loads and the power supply are separated and far enough from each other, without crossing or intertwining.
• In case of applications in industrial environments, the use of mains filters (our mod. FT1) in parallel with inductive loads could be useful.
• Dixell Srl reserves the right to change the composition of its products, even without notice, ensuring the same and unchanged functionality.

GENERAL DESCRIPTION

• Models XW60LR, XW60LRH , format 38x185mm, are microprocessor based controller, suitable for applications on medium or low temperature ventilated refrigerating units. It has 4 relay outputs to control compressor, fan and defrost, which can be either electrical or reverse cycle (hot gas) It could be provided with a Real Time Clock which allows programming of up to 6 daily defrost cycles, divided into holidays and workdays. A “Day and Night” function with two different set points is fitted for energy saving. It is also provided with up to three NTC or PTC probe inputs, the first one for temperature control, the second one, to be located onto the evaporator, to control the defrost termination temperature and to managed the fan. Third probe can operates as digital input.
• The HOT KEY output allows to connect the unit, by means of the external module XJ485-CX, to a network line ModBUS-RTU compatible such as the dIXEL monitoring units of X-WEB family. It allows to program the controller by means the HOT KEY programming keyboard.
• The instrument is fully configurable through special parameters that can be easily programmed through the keyboard.

CONTROLLING LOADS

COMPRESSOR
The regulation is performed according to the temperature measured by the thermostat probe with a positive differential from the set point: if the temperature increases and reaches set point plus differential the compressor is started and then turned off when the temperature reaches the set point value again.

In case of fault in the thermostat probe the start and stop of the compressor are timed through parameters “COn” and “COF”.

DEFROST
Two defrost modes are available through the “tdF” parameter: defrost through electrical heater (tdF = EL) and hot gas defrost (tdF = in).

The defrost interval depends on the presence of the RTC (optional). If the RTC is present is controlled by means of parameter “EdF”

• with EdF=in the defrost is made every “IdF” time – standard way for controller without RTC.
• with EdF = “rtc”, the defrost is made in real time depending on the hours set in the parameters Ld1..Ld6 on workdays and in Sd1…Sd6 in holidays;

Other parameters are used to control defrost cycles: its maximum length (MdF) and two defrost modes: timed or controlled by the evaporator’s probe (P2P).

At the end of defrost dripping time is started, its length is set in the Fdt parameter. With Fdt =0 the dripping time is disabled.

CONTROL OF EVAPORATOR FANS
The fan control mode is selected by means of the “FnC” parameter

• FnC = C_n: fans will switch ON and OFF with the compressor and not run during defrost;
• FnC = o_n fans will run even if the compressor is off, and not run during defrost;
• After defrost, there is a timed fan delay allowing for drip time, set by means of the “Fnd” parameter. FnC = C_Y fans will switch ON and OFF with the compressor and run during defrost;
• FnC = o_Y fans will run continuously also during defrost
• An additional parameter “FSt” provides the setting of temperature, detected by the evaporator probe, above which the fans are always OFF. This is used to make sure circulation of air only if his temperature is lower than set in “FSt”.

Forced activation of fans
This function managed by the Fct parameter is designed to avoid short cycles of fans, that could happen when the controller is switched on or after a defrost, when the room air warms the evaporator. Functioning: if the difference of temperature between the evaporator and the room probes is more than the value of the Fct parameter, the fans are switched on. With Fct=0 the function is disabled.

Cyclical activation of the fans with compressor off.
When Fnc = c-n or c-Y (fans in parallel to the compressor), by means of the Fon and FoF parameters the fans can carry out on and off cycles even if the compressor is switched off. When the compressor is stopped the fans go on working for the Fon time. With Fon =0 the fans remain always off, when the compressor is off.

AUXILIARY RELAY CONFIGURATION – TERM.3-5, PAR. OA3

The functioning of the auxiliary relay (terminals. 3-5) can be set by the oA3 parameter, according to the kind of application. In the following paragraph the possible setting:

Light relay – oA3= Lig
With oA3 = Lig, the 3-5 relay is set as light. It is activated by key or when i1F = dor.

Alarm relay – oA3= AUS
There are 2 possibilities:

• Activation via digital input (oA3= AUS, i1F or i2F = AUS)
  With oA3 = AUS and i2F or i1F = AUS the relay 3-5 is activated via digital input and remains ON until the digital input is activated or is silenced by pressing any key.

• Auxiliary thermostat (es. anti-sweat heaters)
  Parameters involved

  • ACH Type of regulation: heating/cooling;
  • SAA Set point auxiliary relay
  • SHy Differential for auxiliary relay
  • ArP Probe for auxiliary relay
  • Sdd Auxiliary output off during defrost

By means of these 5 parameters the functioning of the auxiliary relay can be set.
NOTE: Set oA3=AUS and ArP= nP (no probe for auxiliary output).

In this case the relay 3-5 can be activated only by digital input with i1F or i2F = AUS.

On/off relay – oA3 = onF
In this case the relay is activated when the controller is turned on and de- activated when the controller is in stand-by mode.

Neutral zone regulation
With oA3 = db the relay 3-5 can control a heater element to perform a neutral zone action.

• oA3 cut in = SET-HY
• oA3 cut out = SET

Alarm relay

• With oA3 = ALr the relay 3-5 operates as alarm relay. It is activated every time an alarm happens. Its status depends on the tbA parameter:
• With “tbA = y”, the relay is silenced by pressing any key.
• With “tbA = n”, the alarm relay remains on until the alarm condition recovers.

Night blind management during energy saving cycles
With oA3 = HES, the relay 3-5 operates to manage the night blind: the relay is energized when the energy saving cycle is activated, by digital input, frontal button or RTC (optional).

FRONT PANEL COMMANDS

• SET : To display target set point; in programming mode it selects a parameter or confirm an operation.
• (DEF) To start a manual defrost
• (UP): To see the max. stored temperature; in programming mode it browses the parameter codes or increases the displayed value.
• ( DOWN) To see the min stored temperature; in programming mode it browses the parameter codes or decreases the displayed value.
• To switch the instrument off, if onF = OFF.
• To switch the light, if oA3 = Lig.

KEY COMBINATIONS

• To lock & unlock the keyboard.
• To enter in programming mode.
• To return to the room temperature display.

USE OF LEDS
Each LED function is described in the following table.

MAX & MIN TEMPERATURE MEMORIZATION

HOW TO SEE THE MIN TEMPERATURE

1. Press and release the key.
2. The “Lo” message will be displayed followed by the minimum temperature recorded.
3. By pressing the  key again or by waiting 5s the normal display will be restored.

HOW TO SEE THE MAX TEMPERATURE

1. Press and release the  key.
2. The “Hi” message will be displayed followed by the maximum temperature recorded.
3. By pressing the key again or by waiting 5s the normal display will be restored.

HOW TO RESET THE MAX AND MIN TEMPERATURE RECORDED

1. Hold press the SET key for more than 3s, while the max. or min temperature is displayed. (rSt message will be displayed)
2. To confirm the operation the “rSt” message starts blinking and the normal temperature will be displayed.

MAIN FUNCTIONS

TO SET THE CURRENT TIME AND DAY (ONLY FOR INSTRUMENTS WITH RTC)

When the instrument is switched on, it’s necessary to program the time and day.

1. Enter the Pr1 programming menu, by pushing the SET + n keys for 3s.
2. The rtc parameter is displayed. Push the SET key to enter the real time clock menu.
3. The Hur (hour) parameter is displayed.
4. Push the SET and set current hour by the UP and Down keys, then push SET to confirm the value..
5. Repeat the same operations on the Min (minutes) and dAy (day) parameters.

To exit: Push SET+UP keys or wait for 15 sec without pushing any keys.

HOW TO SEE THE SET POINT

1. Push and immediately release the SET key: the display will show the Set point value;
2. Push and immediately release the SET key or wait for 5 seconds to display the probe value again.

HOW TO CHANGE THE SET POINT

1. Push the SET key for more than 2 seconds to change the Set point value;
2. The value of the set point will be displayed and the “°C” LED starts blinking;
3. To change the Set value push the o or n arrows within 10s.
4. To memories the new set point value push the SET key again or wait 10s.

HOW TO START A MANUAL DEFROST

Push the DEF key for more than 2 seconds and a manual defrost will start.

HOW TO CHANGE A PARAMETER VALUE
Push the DEF key for more than 2 seconds and a manual defrost will start.

To change the parameter’s value operate as follows

1. Enter the Programming mode by pressing the Set + keys for 3s (the “°C” LED starts blinking).
2. Select the required parameter. Press the “SET” key to display its value
3. Use “UP” or “DOWN” to change its value.
4. Press “SET” to store the new value and move to the following parameter.
   To exit: Press SET + UP or wait 15s without pressing a key.

NOTE: the set value is stored even when the procedure is exited by waiting the time-out to expire.

THE HIDDEN MENU
The hidden menu Includes all the parameters of the instrument.

HOW TO ENTER THE HIDDEN MENU

1. Enter the Programming mode by pressing the Set + keys for 3s (the “°C” LED starts blinking).

2. Released the keys, then push again the Set+ keys for more than 7s. The Pr2 label will be displayed immediately followed from the HY parameter.
   NOW YOU ARE IN THE HIDDEN MENU.

3. Select the required parameter.

4. Press the “SET” key to display its value

5. Use o or n to change its value.

6. Press “SET” to store the new value and move to the following parameter.

To exit : Press SET + o or wait 15s without pressing a key.

NOTE1: if none parameter is present in Pr1, after 3s the “noP” message is displayed. Keep the keys pushed till the Pr2 message is displayed.

NOTE2: the set value is stored even when the procedure is exited by waiting the time-out to expire.

HOW TO MOVE A PARAMETER FROM THE HIDDEN MENU TO THE FIRST LEVEL AND VICEVERSA.
Each parameter present in the HIDDEN MENU can be removed or put into “THE FIRST LEVEL” (user level) by pressing “SET + In HIDDEN MENU when a parameter is present in First Level the decimal point is on.

HOW TO LOCK THE KEYBOARD

1. Keep pressed for more than 3 s the UP + DOWN keys.
2. The “POF” message will be displayed and the keyboard will be locked. At this point it will be possible only to see the set point or the MAX o Min temperature stored
3. If a key is pressed more than 3s the “POF” message will be displayed.

TO UNLOCK THE KEYBOARD
Keep pressed together for more than 3s the o and n keys, till the “Pon” message will be displayed.

THE CONTINUOUS CYCLE
When defrost is not in progress, it can be activated by holding the “o” key pressed for about 3 seconds. The compressor operates to maintain the “ccS” set point for the time set through the “CCt” parameter. The cycle can be terminated before the end of the set time using the same activation key “ ” for 3 seconds.

THE ON/OFF FUNCTION

With “onF = oFF”, pushing the ON/OFF key, the instrument is switched off. The “OFF” message is displayed. In this configuration, the regulation is disabled.
To switch the instrument on, push again the ON/OFF key.

WARNING: Loads connected to the normally closed contacts of the relays are always supplied and under voltage, even if the instrument is in stand by mode.

PARAMETERS

rtc Real time clock menu (only for controller with RTC): to set the time and date and defrost start time.

REGULATION

• Hy Differential: (0,1 ÷ 25,5°C / 1÷255 °F) Intervention differential for set point. Compressor Cut IN is
• Set Point + differential (Hy). Compressor Cut OUT is when the temperature reaches the set point.
• LS Minimum set point: (- 50°C÷SET/-58°F÷SET): Sets the minimum value for the set point.
• US Maximum set point: (SET÷110°C/ SET÷230°F). Set the maximum value for set point.
• Ot Thermostat probe calibration: (-12.0÷12.0°C; -120÷120°F) allows to adjust possible offset of the thermostat probe.
• P2P Evaporator probe presence: n= not present: the defrost stops by time; y= present: the defrost stops by temperature.
• OE Evaporator probe calibration: (-12.0÷12.0°C; -120÷120°F). allows to adjust possible offset of the evaporator probe.
• P3P Third probe presence (P3): n= not present:, the terminals 13-14 operate as digital input.; y= present:, the terminals 13-14 operate as third probe.
• O3 Third probe calibration (P3): (-12.0÷12.0°C; -120÷120°F). allows to adjust possible offset of the third probe.
• OdS Outputs activation delay at start up: (0÷255min) This function is enabled at the initial start up of the instrument and inhibits any output activation for the period of time set in the parameter.
• AC Anti-short cycle delay: (0÷50 min) minimum interval between the compressor stop and the following restart.
• AC1 2nd compressor delay at start up (0÷255s) Used only if oA3 = cP2 Time interval between the switching on of the first compressor and the second one.
• rtr Percentage of the second and first probe for regulation (0÷100; 100 = P1, 0 = P2 ): it allows to set the regulation according to the percentage of the first and second probe, as for the  following
• formula (rtr(P1-P2)/100 + P2).
• CCt Compressor ON time during continuous cycle: (0.0÷24.0h; res. 10min) Allows to set the length of the continuous cycle: compressor stays on without interruption for the CCt time. Can be used, for
• instance, when the room is filled with new products.
• CCS Set point for continuous cycle: (-50÷150°C) it sets the set point used during the continuous cycle.
• COn Compressor ON time with faulty probe: (0÷255 min) time during which the compressor is active in case of faulty thermostat probe. With COn=0 compressor is always OFF.
• COF Compressor OFF time with faulty probe: (0÷255 min) time during which the compressor is
• OFF in case of faulty thermostat probe. With COF=0 compressor is always active.
• CH Type of action: CL = cooling; Ht = heating.

DISPLAY

• CF Temperature measurement unit: °C=Celsius; °F=Fahrenheit. WARNING: When the
  measurement unit is changed the SET point and the values of the parameters Hy, LS, US, Ot, ALU and ALL have to be checked and modified if necessary).

• rES Resolution (for °C): (in = 1°C; dE = 0.1 °C) allows decimal point display.

• Lod Instrument display : (P1; P2, P3, P4, SET, dtr): it selects which probe is displayed by the instrument: P1 = Thermostat probe; P2 = Evaporator probe; P3 = Third probe(only for model with this option enabled); P4 = Fourth probe, SET = set point; dtr = percentage of visualization.

• rEd X- REP display (optional): (P1; P2, P3, P4, SET, dtr): it selects which probe is displayed by X- REP: P1 = Thermostat probe; P2 = Evaporator probe; P3 = Third probe(only for model with this

• option enabled); P4 = Fourth probe, SET = set point; dtr = percentage of visualization.
  dLy Display delay: (0 ÷20.0m; result. 10s) when the temperature increases, the display is updated of 1 °C/1°F after this time.

• dtr Percentage of the second and first probe for visualization when Lod = dtr (0÷100; 100 =  P1, 0 = P2 ): if Lod = dtr it allows to set the visualization according to the percentage of the first and second probe, as for the following formula (dtr(P1-P2)/100 + P2).

DEFROST

• EdF Defrost mode (only for controller with RTC): rtc = Real Time Clock mode. Defrost time follows Ld1÷Ld6 parameters on workdays and Sd1÷Sd6 on holidays.
• in = interval mode. The defrost starts when the time “Idf” is expired.
• dFP Probe selection for defrost termination : nP = no probe; P1 =thermostat probe; P2 = evaporator probe; P3 =configurable probe; P4 = fourth probe.
• dtE Defrost termination temperature: (-50÷50 °C/ -58÷122°F) (Enabled only when EdF=Pb) sets  the temperature measured by the evaporator probe, which causes the end of defrost.
• IdF Interval between defrost cycles : (0÷120h) Determines the time interval between the beginning of two defrost cycles.
• MdF (Maximum) length for defrost: (0÷255min) When P2P = n, (not evaporator probe: timed  defrost) it sets the defrost duration, when P2P = y (defrost end based on temperature) it sets the maximum length for defrost.
• dFd Temperature displayed during defrost: (rt = real temperature; it = temperature at defrost start
• SEt = set point; dEF = “dEF” label)
• dAd MAX display delay after defrost : (0÷120min). Sets the maximum time between the end of defrost and the restarting of the real room temperature display.

AUXILIARY THERMOSTAT CONFIGURATION (terms. 5-67/) – OA1 = AUS

• ACH Kind of regulation for auxiliary relay: Ht = heating; CL = cooling
• SAA Set Point for auxiliary relay: (-50,0÷110,0°C; -58÷230°F) it defines the room temperature set point to switch auxiliary relay.
• SHy Differential for auxiliary output: (0,1 ÷ 25,5°C / 1÷255 °F) Intervention differential for auxiliary output set point.
• With ACH = cL AUX Cut in is SAA + SHy; . AUX Cut out is SAA With ACH = Ht AUX Cut in is SAA – SHy; . AUX Cut out is SAA
• ArP Probe selection for auxiliary: nP = no probe, the auxiliary relay is switched only by button;
• P1 = Probe 1 (Thermostat probe); P2 = Probe 2 (evaporator probe); P3 = Probe 3 (display probe);  P4 = Probe 4 fourth probe.
• Sdd Auxiliary relay off during defrost: n = the auxiliary relay 5-6/7 operates during defrost.
• y = the auxiliary relay 5-6/7 is switched off during defrost.

ALARMS

• ALP Probe selection for alarm: P1 = Probe 1; P2 = Probe 2; P3 = Probe 3; P4 = Fourth probe.
• ALC Temperature alarms configuration: (Ab; rE)
• Ab= absolute temperature: alarm temperature is given by the ALL or ALU values.
• rE = temperature alarms are referred to the set point. Temperature alarm is enabled when the temperature exceeds the “SET+ALU” or “SET-ALL” values.
• ALU MAXIMUM temperature alarm: (SET÷110°C; SET÷230°F) when this temperature is reached the alarm is enabled, after the “ALd” delay time.
• ALL Minimum temperature alarm: (-50.0 ÷ SET °C; -58÷230°F when this temperature is reached the alarm is enabled, after the “ALd” delay time.
• AFH Differential for temperature alarm recovery: (0,1÷25,5°C; 1÷45°F) Intervention differential for recovery of temperature alarm.
• ALd Temperature alarm delay: (0÷255 min) time interval between the detection of an alarm condition and alarm signaling.
• dAO Exclusion of temperature alarm at start-up: (from 0.0 min to 23.5h) time interval between the detection of the temperature alarm condition after instrument power on and alarm signaling.

CONDENSER TEMPERATURE ALARM

• AP2 Probe selection for temperature alarm of condenser: nP = no probe; P1 =thermostat probe;
• P2 = defrost termination probe; P3 =configurable probe; P4 = fourth probe.
• AL2 Low temperature alarm of condenser: (-55÷150°C) when this temperature is reached the LA2 alarm is signaled, possibly after the Ad2 delay.
• Au2 High temperature alarm of condenser: (-55÷150°C) when this temperature is reached the HA2 alarm is signaled, possibly after the Ad2 delay.
• AH2 Differential for temperature condenser alarm recovery: (0,1÷25,5°C; 1÷45°F)
• Ad2 Condenser temperature alarm delay: (0÷255 min) time interval between the detection of the condenser alarm condition and alarm signaling.
• dA2 Condenser temperature alarm exclusion at start up: (from 0.0 min to 23.5h, res. 10min) bLL Compressor off with low temperature alarm of condenser: n = no: compressor keeps on working; Y =  yes, compressor is switched off till the alarm is present, in any case regulation restarts after AC time at minimum.
• AC2 Compressor off with high temperature alarm of condenser: n = no: compressor keeps on working; Y = yes, compressor is switched off till the alarm is present, in any case regulation restarts after
• AC time at minimum.

AUXILIARY RELAY

• tbA Alarm relay silencing (with oA1 =ALr):
  n= silencing disabled: alarm relay stays on till alarm condition lasts,
  y =silencing enabled: alarm relay is switched OFF by pressing a key during an alarm

• oA1 Second relay configuration (5-6/7): dEF, FAn: do not select it!. ALr: alarm; Lig: light; AuS: Auxiliary relay; onF: always on with instrument on; db= neutral zone; cP2 = second compressor; dF2: do not select it!;. HES:. night blind

• AoP Alarm relay polarity: it set if the alarm relay is open or closed when an alarm happens. CL= terminals 1-4 closed during an alarm; oP = terminals 1-4 open during an alarm

DIGITAL INPUTS

• i1P Digital input polarity (13-14): o P: the digital input is activated by opening the contact; CL: the digital input is activated by closing the contact.

• i1F Digital input configuration (13-14): EAL= external alarm: “EA” message is displayed; bAL= serious alarm “CA” message is displayed. PAL= pressure switch alarm, “CA” message is displayed; dor= door switch function; dEF= activation of a defrost cycle; AUS= auxiliary relay for oA1 or oA4=AUS; Htr= kind of action inversion (cooling – heating); FAn= not set it; ES= Energy saving; HdF = Holiday defrost (enable only with RTC); onF = to switch the controller off.

• did (0÷255 min) with i1F= EAL or i1F = bAL digital input alarm delay (13-14): delay between the detection of the external alarm condition and its signalling.
  with i1F= dor: door open signalling delay
  with i1F= PAL: time for pressure switch function: time interval to calculate the number of the pressure switch activation.

• i2P 2nd digital input polarity (13-19) : oP: the digital input is activated by opening the contact; CL:
  the digital input is activated by closing the contact.
  i2F 2nd digital input configuration (13-19): EAL= external alarm: “EA” message is displayed; bAL=serious alarm “CA” message is displayed. PAL= pressure switch alarm, “CA” message is displayed; dor= door switch function; dEF= activation of a defrost cycle; AUS=not enabled; Htr= kind of action inversion (cooling – heating); FAn= not set it; ES= Energy saving; HdF = Holiday defrost (enable only with RTC); onF = to switch the controller off.

• d2d (0÷255 min) with i2F= EAL or i2F= bAL 2nd digital input alarm delay (13-19): delay between the detection of the external alarm condition and its signalling.

• with i2F = dor: door open signalling delay
  with i2F = PAL: time for pressure switch function: time interval to calculate the number of the pressure switch activation.

• nPS Pressure switch number: (0 ÷15) Number of activation of the pressure switch, during the “did” interval, before signalling the alarm event (I2F= PAL).
  If the nPS activation in the did time is reached, switch off and on the instrument to restart normal regulation.

• odc Compressor status when open door: no, Fan = normal; CPr, F_C = Compressor OFF.
  rrd Outputs restart after doA alarm: no= outputs not affected by the doA alarm; yES = outputs restart with the doA alarm.
  HES Temperature increase during the Energy Saving cycle: (-30,0°C÷30,0°C) it sets the odc Compressor status when open door: no, Fan = normal; CPr, F_C = Compressor OFF.
  rrd Outputs restart after doA alarm: no= outputs not affected by the doA alarm; yES = outputs
  restart with the doA alarm.
  HES Temperature increase during the Energy Saving cycle: (-30,0°C÷30,0°C) it sets the

TO SET CURRENT TIME AND WEEKLY HOLIDAYS (ONLY FOR MODELS WITH RTC)

• Hur Current hour (0 ÷ 23 h)
• Min Current minute(0 ÷ 59min)
• dAY Current day(Sun ÷ SAt)
• Hd1 First weekly holiday (Sun ÷ nu) Set the first day of the week which follows the holiday times.
• Hd2 Second weekly holiday (Sun ÷ nu) Set the second day of the week which follows the holiday times.
• N.B. Hd1,Hd2 can be set also as“nu” value (Not Used).

TO SET ENERGY SAVING TIMES (ONLY FOR MODELS WITH RTC)

• ILE Energy Saving cycle start during workdays: (0 ÷ 23h 50 min.) During the Energy Saving cycle the set point is increased by the value in HES so that the operation set point is SET + HES.
• dLE Energy Saving cycle length during workdays: (0 ÷ 24h 00 min.) Sets the duration of the Energy Saving cycle on workdays.
• ISE Energy Saving cycle start on holidays. (0 ÷ 23h 50 min.)
• dSE Energy Saving cycle length on holidays (0 ÷ 24h 00 min.)

TO SET DEFROST TIMES (ONLY FOR MODELS WITH RTC)

• Ld1÷ Ld6 Workday defrost start (0 ÷ 23h 50 min.) These parameters set the beginning of the 6
  programmable defrost cycles during workdays. Ex. When Ld2 = 12.4 the second defrost starts at 12.40 during workdays.

• Sd1 ÷Sd6 Holiday defrost start (0 ÷ 23h 50 min.) These parameters set the beginning of the 6 programmable defrost cycles on holidays. Ex. When Sd2 = 3.4 the second defrost starts at 3.40 on holidays.

• N.B. :To disable a defrost cycle set it to “nu”(not used). Ex. If Ld6=nu ; the sixth defrost cycle is disabled

OTHER

• Adr Serial address (1÷244): Identifies the instrument address when connected to a ModBUS compatible monitoring system.
• PbC Type of probe: it allows to set the kind of probe used by the instrument: PTC = PTC probe, ntc = NTC probe.
• onF on/off key enabling: nu = disabled; oFF = enabled; ES = not set it.
• dP1 Thermostat probe display
• dP2 Evaporator probe display
• dP3 Third probe display- optional.
• rSE Real set point: it shows the set point used during the energy saving cycle or during the continuous cycle.
• rEL Software release for internal use.
• Ptb Parameter table code: readable only.

DIGITAL INPUTS

• The first digital input is enabled with P3P = n.
• With P3P = n and i1F = i2F the second digital input is disabled
• The free voltage digital inputs are programmable by the “i1F” and i2F parameters.

GENERIC ALARM (i1F or i2F = EAL)
As soon as the digital input is activated the unit will wait for “did” time delay before signalling the “EAL” alarm message. The outputs status don’t change. The alarm stops just after the digital input is de-activated.

SERIOUS ALARM MODE (i1F or i2F = bAL)
When the digital input is activated, the unit will wait for “did” delay before signalling the “CA” alarm message. The relay outputs are switched OFF. The alarm will stop as soon as the digital input is de-activated.

PRESSURE SWITCH (i1F or i2F = PAL)
If during the interval time set by “did” parameter, the pressure switch has reached the number of activation of the “nPS” parameter, the “CA” pressure alarm message will be displayed. The compressor and the regulation are stopped. When the digital input is ON the compressor is always OFF. If the nPS activation in the did time is reached, switch off and on the instrument to restart normal regulation.

DOOR SWITCH INPUT (i1F or i2F = dor)
It signals the door status and the corresponding relay output status through the “odc” parameter: no, Fan = normal (any change); CPr, F_C = Compressor OFF.
Since the door is opened, after the delay time set through parameter “did”, the door alarm is enabled, the display shows the message “dA” and the regulation restarts is rtr = yES. The alarm stops as soon as the external digital input is disabled again. With the door open, the high and low temperature alarms are disabled.

START DEFROST (i1F or i2F = dEF)
It starts a defrost if there are the right conditions. After the defrost is finished, the normal regulation will restart only if the digital input is disabled otherwise the instrument will wait until the “MdF” safety time is expired.

SWITCH THE AUXILIARY RELAY (i1F or i2F = AUS)
With oA1 = AUS the digital input switched the status of the auxiliary relay

ENERGY SAVING (i1F or i2F = ES)
The Energy Saving function allows to change the set point value as the result of the SET+ HES (parameter) sum. This function is enabled until the digital input is activated.

HOLIDAY DEFROST (i1F or i2F = HDF) –ONLY FOR MODELS WITH RTC
This function enabled the holiday defrost setting.

ON OFF FUNCTION (i1F or i2F = onF)
To switch the controller on and off.

DIGITAL INPUTS POLARITY
The digital input polarity depends on the “i1P” and “i2P” parameters.

• i1P or i2P =CL: the input is activated by closing the contact.
• i1P or i2P=OP: the input is activated by opening the contact

TTL SERIAL LINE – FOR MONITORING SYSTEMS
The TTL serial line, available through the HOT KEY connector, allows by means of the external TTL/RS485 converter, XJ485-CX, to connect the instrument to a monitoring system ModBUS-RTU compatible such as the X-WEB500/3000/300.

X-REP OUTPUT – OPTIONAL
As optional, an X-REP can be connected to the instrument, trough the HOY KEY connector. The X-REP output EXCLUDES the serial connection.

To connect the X-REP to the instrument the following connectors must be used CAB-51F(1m), CAB-52F(2m), CAB-55F(5m),

INSTALLATION AND MOUNTING

The controller shall be mounted on vertical panel, in a 150×31 mm hole, and fixed using two screws ∅ 3 x 2mm (only for XW20LR).
XW20LR: to obtain an IP65 protection grade use the front panel rubber gasket (mod. RG-L). The temperature range allowed for correct operation is 0 – 60 °C. Avoid places subject to strong vibrations,

corrosive gases, excessive dirt or humidity. The same recommendations apply to probes. Let the air circulate by the cooling holes.

CUT OUT

STEEL FINISHING MOUNTING

ELECTRICAL CONNECTIONS
The instruments are provided with screw terminal block to connect cables with a cross section up to 2,5 mm2 for the digital and analogue inputs. Relays and power supply have a Faston connection (6,3mm). Heat-resistant cables have to be used. Before connecting cables make sure the power supply complies with the instrument’s requirements. Separate the probe cables from the power supply cables, from the outputs and the power connections. Do not exceed the maximum current allowed on each relay, in case of heavier loads use a suitable external relay.

N.B. Maximum current allowed for all the loads is 20A.

PROBE CONNECTION
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid infiltration. It is recommended to place the thermostat probe away from air streams to correctly measure the average room temperature. Place the defrost termination probe among the evaporator fins in the coldest place, where most ice is formed, far from heaters or from the warmest place during defrost, to prevent premature defrost termination.

HOW TO USE THE HOT KEY

HOW TO PROGRAM A HOT KEY FROM THE INSTRUMENT (UPLOAD)

1. Program one controller with the front keypad.
2. When the controller is ON, insert the “Hot key” and push o key; the “uPL” message appears followed a by flashing “End”
3. Push “SET” key and the End will stop flashing.
4. Turn OFF the instrument remove the “Hot Key”, then turn it ON again.

NOTE: the “Err” message is displayed for failed programming. In this case push again o key if you want to restart the upload again or remove the “Hot key” to abort the operation.

HOW TO PROGRAM AN INSTRUMENT USING A HOT KEY (DOWNLOAD)

1. Turn OFF the instrument.
2. Insert a programmed “Hot Key” into the 5 PIN receptacle and then turn the Controller ON.
3. Automatically the parameter list of the “Hot Key” is downloaded into the Controller memory, the “doL” message is blinking followed a by flashing “End”.
4. After 10 seconds the instrument will restart working with the new parameters.
5. Remove the “Hot Key”..

NOTE the message “Err” is displayed for failed programming. In this case turn the unit off and then on if you want to restart the download again or remove the “Hot key” to abort the operation.

ALARM SIGNALS

Defrosts according to par. “IdF” Set real time clock has to be set
rtF| Real time clock board failure| Alarm output ON; Other outputs unchanged; Defrosts according to par. “IdF” Contact the service

ALARM RECOVERY

• Probe alarms P1”, “P2” and “P4” start some seconds after the fault in the related probe; they automatically stop some seconds after the probe restarts normal operation. Check connections before replacing the probe.
• Temperature alarms “HA”, “LA” “HA2” and “LA2” automatically stop as soon as the temperature returns to normal values.
• Alarms “EA” and “CA” (with i1F=bAL) recover as soon as the digital input is disabled.
• Alarm “CA” (with i1F=PAL) recovers only by switching off and on the instrument.
• Real time clock alarm rtC, it stops as soon as the correct hour and day are set.
• Real time clock alarm rtF, the clock board has to be replaced. Contact the service.

14.2  OTHER MESSAGES

Pon| Keyboard unlocked.
PoF| Keyboard locked
noP|

• In programming mode : none parameter is present in Pr1
• On the display or in dP2, dP3, dP4: the selected probe is nor enabled

TECHNICAL DATA

• Housing : self extinguishing ABS.
• Case: facia 38×185 mm; depth 40mm
• Mounting : panel mounting in a 150×31 mm panel cut-out.
• Only for XW20LR two screws. ∅ 3 x 2mm, distance between the holes 165mm Protection: IP20; Frontal protection: IP65 with frontal gasket mod RG-L or RG-LX. Connections: Screw terminal block ≤ 2,5 mm2 heat-resistant wiring and 6,3mm Faston Power supply: 230Vac or. 110Vac ± 10%, 50/60Hz.
• Power absorption : 7VA max.
• Display: 3 digits, red LED, 14,2 mm high.
• Inputs: Up to 3 NTC or PTC probes.
• Digital inputs: free voltage
• Relay outputs: Total current on loads MAX. 20A
• compressor: relay SPST 20(8) A, 250Vac
• light: relay SPST 8A, 250Vac
• Other output : buzzer (optional)
• Serial output : TTL standard; Communication protocol: Modbus – RTU
• Data storing: on the non-volatile memory (EEPROM).
• Internal clock back-up: 24 hours (only for model with RTC)
• Kind of action: 1B; Pollution grade: normal; Software class: A.;
• Over voltage Category: II
• Operating temperature: 0÷60 °C; Storage temperature: -30÷85 °C.
• Relative humidity: 20÷85% (no condensing)
• Measuring and regulation range: NTC probe: -40÷110°C (-40÷230°F);
• PTC probe: -50÷150°C (-58÷302°F)
• Resolution: 0,1 °C or 1 °F (selectable); Accuracy (ambient temp. 25°C): ±0,7 °C ±1 digit

CONNECTIONS

Models at 120Vac or 24Vac: connect to terminals 8-9.
NOTE: on models with X-REP option, connect the X-REP to the HOT KEY receptacle

DEFAULT SETTING VALUES

Pr2
Sdd| Auxiliary relay operating during defrost| n – Y| n| Pr2
ALP| Alarm probe selection| nP – P1 – P2 – P3 – P4| P1| Pr2
ALc| Temperat. alarms configuration| rE – Ab| Ab| Pr2
ALU| MAXIMUM temperature alarm| ALc=rE: 0.0÷ 50.0°C ALc=Ab: ALL÷150°C| 110,0| Pr1
ALL| Minimum temperature alarm| ALc = rE: 0.0÷50.0°C; ALc=Ab: – 55°C÷ALU| -50,0| Pr1
AFH| Differential for temperat. alarm recovery| (0,1°C ÷ 25,5°C)| 2,0| Pr2
ALd| Temperature alarm delay| 0 ÷ 255 (min.)| 15| Pr2
dAO| Delay of temperature alarm at start up| 0 ÷ 24.0 h ris. 10min| 1,3| Pr2
AP2| Probe for temperat. alarm of condenser| nP – P1 – P2 – P3 – P4| nP| Pr2
AL2| Condenser for low temperat. alarm| (-55.0°C ÷ 150,0°C)| -40| Pr2
AU2| Condenser for high temperat. alarm| (-55.0°C ÷ 150,0°C)| 110| Pr2
AH2| Differ. for condenser temp. alar. recovery| (0,1°C ÷ 25,5°C)| 5| Pr2
Ad2| Condenser temperature alarm delay| 0 ÷ 255 (min.)| 15| Pr2
dA2| Delay of cond. temper. alarm at start up| 0 ÷ 24H0(144)| 1,3| Pr2

bLL

| Compr. off for condenser low temperature alarm|

n – Y

| n| Pr2

AC2

| Compr. off for condenser high temperature alarm|

n – Y

| n| Pr2
tbA| Alarm relay disabling| n – Y| y| Pr2
oA1| Second relay configuration| dEF – FAn – ALr – LiG – AUS – OnF – db – CP2 – dF2 – HES| Lig| Pr2
AoP| Alarm relay polarity| OP – CL| cL| Pr2
i1P| Digital input polarity| OP – CL| cL| Pr1
i1F| Digital input 1 configuration| EAL – bAL – PAL – dor – dEF – AUS – Htr – FAn – ES-HdF – onF| dor| Pr1
did| Digital input alarm delay| 0 ÷ 255 (min.)| 15| Pr1
i2P| Digital input polarity| OP – CL| cL| Pr2
i2F| Digital input configuration| EAL – bAL – PAL – dor – dEF – AUS – Htr – FAn – ES-HdF – onF| EAL| Pr2
d2d| Digital input alarm delay| 0 ÷ 255 (min.)| 5| Pr2
Nps| Number of activation of pressure switch| 0 ÷ 15| 15| Pr2
odc| Compress status when open door| no – FAn – CPr – F-C| F-c| Pr2
rrd| Regulation restart with door open alarm| n – Y| y| Pr2
HES| Differential for Energy Saving| (-30°C ÷ 30°C)| 0| Pr2
Hur| Current hour| Read only| –| rtc
Min| Current minute| Read only| –| rtc
Label| Name| Range| Value| Level
---|---|---|---|---
dAY| Current day| Read only| –| rtc
Hd1| First weekly holiday| Sun ÷ SAt – nu| nu| rtc
Hd2| Second weekly holiday| Sun ÷ SAt – nu| nu| rtc
ILE| Energy Saving cycle start during workdays| 0 ÷ 23h5| 0| rtc
dLE| Energy Saving cycle length during workdays| 0 ÷ 24h0| 0| rtc
ISE| Energy Saving cycle start on holidays| 0 ÷ 23h5| 0| rtc
dSE| Energy Saving cycle length on holidays| 0 ÷ 24h0| 0| rtc
Ld1| 1st workdays defrost start| 0 ÷ 23H5;- nu| 6.0| rtc
Ld2| 2nd workdays defrost start| 0 ÷ 23H5;- nu| 13.0| rtc
Ld3| 3rd workdays defrost start| 0 ÷ 23H5;- nu| 21.0| rtc
Ld4| 4th workdays defrost start| 0 ÷ 23H5;- nu| 0.0| rtc
Ld5| 5th workdays defrost start| 0 ÷ 23H5;- nu| 0.0| rtc
Ld6| 6th workdays defrost start| 0 ÷ 23H5;- nu| 0.0| rtc
Sd1| 1st holiday defrost start| 0 ÷ 23H5;- nu| 6.0| rtc
Sd2| 2nd holiday defrost start| 0 ÷ 23H5;- nu| 13.0| rtc
Sd3| 3rd holiday defrost start| 0 ÷ 23H5;- nu| 21.0| rtc
Sd4| 4th holiday defrost start| 0 ÷ 23H5;- nu| 0.0| rtc
Sd5| 5th holiday defrost start| 0 ÷ 23H5;- nu| 0.0| rtc
**Sd6*| 6th holiday defrost start| 0 ÷ 23H5;- nu| 0.0| rtc
Adr| Serial address| 1 ÷ 247| 1| Pr2
PbC| Kind of probe| PtC – ntC| ntc| Pr2
onF| on/off key enabling| nu – OFF – ES| oFF| Pr2
dP1| Room probe display| Probe value| –| Pr2
dP2| Evaporator probe display| Probe value| –| Pr2
dP3| Third probe display| Probe value| –| Pr2
rSE| Real set point| Read only| –| Pr2
rEL| Software release| Read only| 1.8| Pr2
Ptb**| Map code| Read only| | Pr2

2 Only for model with X-REP output

• Only for model with real time clock

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>