COPELAND XR02CH Digital Controller Instruction Manual

: September 25, 2024
: Copeland

COPELAND XR02CH Digital Controller Instruction Manual

GENERAL WARNINGS

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.
Copeland Controls 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 “Copeland Controls Srl” (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.

GENERAL DESCRIPTION

The XR02CH, format 32x74x60mm, is microprocessor based controller, suitable for applications on medium or low temperature ventilated refrigerating units. It has 1 relay output to control the compressor.
The device has an NTC probe input for temperature control. A configurable free of voltage digital input is present with various functionalities. 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 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.

REGULATION

TYPE OF REGULATION

The regulation is performed according to the temperature measured by probe. The XR01CX is provided with the CH programmable parameter which enables the user to set the regulation both for heating or cooling applications:

CH=CL: cooling applications
CH=Ht : heating applications

COOLING APPLICATION

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 activated 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 CY and Cn.

HEATING APPLICATION

The regulation is performed according to the temperature measured by the thermostat probe with a negative differential from the set point: if the temperature decreases and reaches set point minus differential, the heating output is activated and then turned off when the temperature reaches the set point value again.

DEFROST

Defrost is controlled by parameters:

id : interval between two consecutive defrost cycles
Md : maximum defrost duration
dF : visualisation during any defrost

FRONT PANEL COMMANDS

| To display target set point, in programming mode it selects a parameter or confirm an operation.
---|---
| ( DEF ) To start a manual defrost.
| ( UP ) In programming mode it browses the parameter codes or increases the displayed value.
| ( DOWN ) In programming mode it browses the parameter codes or decreases the displayed value.To put the controller in “OFF” or ”ON” mode.

KEYS COMBINATION

| +| | To lock or unlock the keyboard
---|---|---|---
| +| | To enter in programming mode
| +| | To return to room temperature display
| +| | To reset parameter
LED| MODE| DESCRIPTION
---|---|---
**| On| Compressor enabled
Flashing| – Compressor activation delay active (during AC time)- Compressor stop for micro-door
**| On| Defrost in progress
Flashing| – Defrost delay active (during time dd )- Dripping in progress (during time dt )
**| On| Alarms happens
Flashing**| —

HOW TO SEE THE SET POINT

Push and immediately release the SET key, the set point will be showed;
Push and immediately release the SET key or wait about 5s to return to normal visualisation.

HOW TO CHANGE THE SET POINT

Push the SET key for more than 2 seconds to change the Set point value;
The value of the set point will be displayed and starts blinking;
To change the Set value push the or arrows within 10s.
To memorise the new set point value push the SET key again or wait 15s.

HOW TO START A MANUAL DEFROST

Push the DEF key for more than 2 seconds and a manual defrost will start, the pre-condition is evaporator probe temp lower than dE.

HOW TO CHANGE A PARAMETER VALUE

To change the parameters` value operate as follows:

1. Enter the Programming mode by pressing the SET+ keys for 3s.
2. Select the required parameter.
3. Press the “SET” key to display its value (set value starts to blink).
4. Use or to change its value.
5. Press “SET” to store the new value and move to the following parameter.

To exit : Press SET+ 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. Please restart the controller after change the parameters.

HOW TO RESET TO THE FACTORY PARAMETER VALUE

In the first 60s after controller power-on, it allows user to reset to the factory parameter through key combination with steps below:

Start pressing DEF key and for 5s
Then release just but keep DEF key another 5s. Then parameter reset successfully by controller re-start automatically.
NOTE:
- The Parameters Factory Reset function is available only after Fr=Y has configured.
- The Parameters Factory Reset function shall be accessible in the first 60 seconds from the device power-on. The default configuration will initiate the loading, during this time all regulation will be interrupted, relays will be powered off, and the controllers is reset.

The hidden menu includes all the parameters of the instrument.

Enter the Programming mode by pressing the SET+ keys for 3s (Set value starts to blink).
Released the keys, then push again the SET+ keys for more than 7s. The L2 label will be displayed immediately followed from the Hy parameter.
NOW YOU ARE IN THE HIDDEN MENU.
Select the required parameter.
Press the “SET” key to display its value
Use or to change its value.
Press “SET” to store the new value and move to the following parameter.
To exit : Press SET+ or wait 15s without pressing a key.
NOTE 1: if there aren’t any parameter in L1, after 3s the “nP” message is displayed. Keep the keys pushed till the L2 message is displayed.
NOTE 2: 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 VICE VERSA.
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.

TO LOCK THE KEYBOARD

Keep pressed for more than 3s the and keys.
The “OF” message will be displayed and the keyboard will be locked. If a key is pressed more than 3s the “OF” message will be displayed.

TO UNLOCK THE KEYBOARD

Keep pressed together for more than 3s the and keys till the “on” message will be displayed.

THE ON/OFF FUNCTION

With “b3 = oF”, by keeping pushed the DOWN key, the instrument is switched off. The “OF” message is displayed. In this configuration, the regulation is disabled.
To switch the instrument on, push again the DOWN 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

REGULATION
Hy Differential: (0,1°C ÷ 25°C / 1°F ÷ 45°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 : (-55°C÷SET/-67°F÷SET): Sets the minimum value for the set point.
US Maximum SET POINT: (SET÷99°C/ SET÷99°F). Set the maximum value for set point.
od Outputs activation delay at start up: (0÷99min) 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.
Cy Compressor ON time with faulty probe: (0÷99 min) time during which the compressor is active in case of faulty thermostat probe. With Cy=0 compressor is always OFF.
Cn Compressor OFF time with faulty probe: (0÷99 min) time during which the compressor is OFF in case of faulty thermostat probe. With Cn=0 compressor is always active.
CH Type of action: (CL; Ht) CL=cooling; Ht=heating.

DISPLAY
CF Measurement unit: (°C÷°F) °C =Celsius; °F =Fahrenheit. WARNING: When the measurement unit is changed the SET point and the values of the parameters Hy, LS, US, oE, o1, AU, AL have to be checked and modified if necessary.
rE Resolution (only for °C):( dE ÷ in) dE= decimal between -9.9 and 9.9°C; in= integer
dy Display delay : (0+15 min.) when the temperature increases, the display is updated of 1 °C/1°F after this time.

PROBES
PC Type of probe: nt = NTC; Pt = PTC
ot First probe calibration: (-9.9÷9.9°C / -17°F ÷ 17°F) allows to adjust possible offset of the first probe.
F5 Filter probe enabling: set the field of action of the internal measurement filter. Nu=not used; AL=the filter will always works on all probes; do=the filter will only works on all probes for 30 sec after opening of the door.
F6 Filter coefficient: define the coefficient for the Probe Filter. The lower the F6 value, the higher is the Probe Filter action (1 ÷ 99).

DEFROST
id Interval between defrost cycles: (0÷99 minutes) Determines the time interval between the beginning of two defrost cycles.
Md Maximum length for defrost: (0÷99 min. with 0 no defrost) when P2=n, (not evaporator probe: timed defrost) it sets the defrost duration, when P2 = y (defrost end based on temperature) it sets the maximum length for defrost.
dF Display during defrost: (rt / it / SP / dE) rt= real temperature; it= start defrost temperature; SP= SET-POINT; dE= label dF.
tA Max display delay after defrost: (0-99min)

ALARMS
AU Maximum temperature alarm: (AL÷99°C/99°F) when this temperature is reached the alarm is enabled, after the “Ad” delay time.
AL Minimum temperature alarm: (-55÷AU°C /-67÷AU°F) when this temperature is reached the alarm is enabled, after the “Ad” delay time.
AH Alarm hysteresis [0.1 to 25°C; 1 to 45°F] Ad Temperature alarm delay: (0÷99 min) time interval between the detection of an alarm condition and alarm signalling.
dA Exclusion of temperature alarm at startup : (0÷99 min) time interval between the detection of the temperature alarm condition after instrument power on and alarm signalling.
oA Open door alarm delay : 0 to 99 min

DIGITAL INPUT
iP Digital input polarity : (oP ÷ cL) oP= activated by closing the contact; cL= activated by opening the contact;
iF Digital input configuration: (nU/do/EA/bA/dF/Fn/Hc/Au) nU= not used; do= door switch function; EA= external alarm: “EA” message is displayed; bA= serious alarm “CA” message is displayed; dF= defrost activation; Fn=not used; Au =not used.
di Digital input delay: (0÷99 min) with iF=EA or bA delay between the detection of the external alarm condition and its signalling. With iF=do it represents the delay to activate the door open alarm.
dC Compressor status when open door : (no/Fn/cP/Fc): no; Fn = normal; Cp, FC =Compressor OFF;
rd Regulation with door open : (n÷y) n = no regulation if door is opened; Y= when di is elapsed regulation restarts even if door open alarm is present;

SERIAL OUTPUT
Sr Serial address (1 to 10)
bd Baudrate 96(0); 19(1); 38(2); 57(3)
PA Parity; Communication no(0); od(1); ev(2)

OTHER
Fr Parameter factory reset: (n ÷y) n= disable to reset to factory parameters; y= able to reset to factory parameters
rL Firmware release: (readable only)
Sv Sub-versioning : reading only
Pt Parameter code table

DIGITAL INPUTS

The free voltage digital input is programmable in different configurations by the “iF” parameter.

NOT USED (IF=NU)
The digital input is not used.

DOOR SWITCH (IF=DO)
It signals the door status and the corresponding relay output status through the “dC” parameter: no, Fn = normal (any change); CP, FC = Compressor OFF.
Since the door is opened, after the delay time set through parameter “di”, the door alarm is enabled, the display shows the message “dA” and the regulation restarts if rd = y. 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.

EXTERNAL ALARM (IF=EA)
As soon as the digital input is activated the unit will wait for “di” time delay before signalling the “EA” alarm message. The outputs status don’t change. The alarm stops just after the digital input is deactivated.

SERIOUS ALARM (IF=BA)
When the digital input is activated, the unit will wait for “di” delay before signalling the “CA” alarm message. The relay outputs are switched OFF. The alarm will stop as soon as the digital input is deactivated.

START DEFROST (IF=DF)
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 “Md” safety time is expired.

TURN ON THE AUXILARY RELAY (IF=AU)
It starts a turn on the auxiliary relay if there are the right conditions.

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..

INSTALLATION AND MOUNTING

Instrument XR02CH shall be mounted on vertical panel, in a 29×71 mm hole, and fixed using the special bracket supplied.
The temperature range allowed for correct operation is 060 °C.
Avoid places subject to strong vibrations, corrosive gases, excessive dirt or humidity. The same recommendations apply to probes. Let air circulate by the cooling holes.

ELECTRICAL CONNECTIONS

The instrument is provided with screw terminal block to connect cables with a cross section up to 2,5 mm2 . 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.

PROBES

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

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

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

HOW TO PROGRAM AN INSTRUMENT USING HOT KEY (DOWNLOAD)

Turn OFF the instrument.
Insert a programmed “Hot Key” into the 5 PIN receptacle and then turn the Controller ON.
Automatically the parameter list of the “Hot Key” is downloaded into the Controller memory, successfully followed by appear “En” label.
After 10 seconds the instrument will restart working with the new parameters.
Remove the “Hot Key”..
NOTE : the “Er” message is displayed for failed programming. Check the Hotkey connection, check the data into Hotkey and repeat the action above.

ALARM SIGNALLING

Mess.	Cause	Outputs
“P1”	Room probe failure	Compressor output according to “Cy” e “Cn”
“HA”	Maximum temperature alarm	Outputs unchanged
“LA”	Minimum temperature alarm	Outputs unchanged
“EA”	External alarm	Outputs unchanged
“CA”	Serious external alarm	All outputs OFF
“dA”	Door Open	Compressor restarts

ALARM RECOVERY

Probe alarm P1” starts 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” and “LA” automatically stop as soon as the temperature returns to normal values.
Alarms “EA” and “CA” (with iF=bL) recover as soon as the digital input is disabled.

WIRINGS

**XR02CH – 20A OR 8A – 110VAC OR 230VAC

NOTE : compressor relay absolute ratings are 20(8)A (terminals 8-9)
NOTE** : power supply on terminals 6-7

DEFAULT SETTING VALUES

LABEL	DESCRIPTION	RANGE	DEFAULT

TECHNICAL DATA

FEATURES	DESCRIPTION
Housing	Self-Extinguishing PC Resin
Dimensions	Front 32×74 mm; Case depth 50 mm
Mounting device	Panel Mounting 71x29mm Cutout
Degree of Protection	NEMA – UL 50e

use only, Case Type 1
IEC 60529| Front : IP65| Back : IP00
Power Supply| 230Vac ±10%, 50/60Hz — 110Vac ±10%, 50/60Hz
Over voltage Category| II
Rated Power| 230VAC: 3,5VA Max (ENEC)
Rated Impulse Voltage| 2500V
Display| 2 digits, LED red (white and blue are optional), height 19 mm
Buzzer| Optional
Software Class| A
Terminal blocks / Terminal Connections| Low Voltage Signals:
Screw Terminal Block, wire sections between 1 and 2,5 mm² Max tightening force: 0,5 Nm
High Voltage Signals:
Screw Terminal Block, wire sections between 1 and 2,5 mm² Max tightening force: 0,5 Nm
Data Storing| Parameters: Internal Flash
Type of Action| 1.B
Pollution Degree| 2, non-condensing humidity
Ambient Operating Temperature and Humidity| UL/IEC| -20÷60°C / 0÷60°C
Shipping and Storage Temperature| -40÷85°C
Measurement Range| NTC: -40÷110°C, resolution 0,1°C o 1°C (selectable); -67÷99°F, resolution 1°F
PTC: -100÷150°C, resolution 0,1°C o 1°C (selectable);
Accuracy| NTC, PTC: ±1% compared to the full scale.
If NTC probe are used: Class 0.5; less than 1% in the range [-25°C a +10°C].
Inputs| 1 NTC o PTC (configurable)
1 free voltage contact
Relay Outputs Configuration 20| Output| Nominal| UL 60730| ENEC
O1 (8-9) Compressor| 20A| 16FLA/96LRA| 16(8)A
Relay Outputs Configuration 8| Output| Nominal| UL 60730| ENEC
O1 (8-9) Compressor| 8A| 4.9FLA/29.4LRA| 8(3)A
I/O Port| HOT KEY: MAX voltage allowed 5 VCC.
DO NOT CONNECT ANY EXTERNAL POWER SUPPLY.
Purpose of Control| Operating Control
Construction of Control| Incorporated Control, intended to be used in Class I or Class II equipment
Approvals| IEC/EN/UL 60730-1; IEC/EN/UL 60730-2-9