Lae ELECTRONIC AC1-5 Two Channel Universal Controller Instruction Manual

Lae ELECTRONIC AC1-5 Two Channel Universal Controller

Thank you for having chosen a LAE electronic product. Before installing the instrument, please read these instructions carefully to ensure maximum performance and safety.

Product Information

The LAE AC1-5 is an electronic temperature controller with two output channels. It features a front panel with buttons for modifying setpoints, entering menus, and adjusting alarm settings. The display shows temperature readings and various indications such as stand-by mode, autotuning, and alarm alerts for overrange or low/high room temperature. The controller also includes a keypad lock function to prevent unauthorized access to its functions. With its PID mode and autotuning capability, the AC1-5 is ideal for refrigerating or heating control applications.

Product Usage

Before installing the LAE AC1-5 temperature controller, please read the following instructions carefully:

1. Make sure you have all the necessary equipment to install the controller
2. Identify the installation location and ensure it is suitable for the controller’s operation
3. Ensure that power supply is disconnected before installation
4. Follow the wiring diagram in the manual to connect the controller to the power supply and other equipment
5. Configure the controller’s settings according to your requirements using the menu and button functions described below
6. Test the controller’s functions to ensure it operates as intended

DESCRIPTION

INDICATION

INSTALLATION

• Insert the controller through a hole measuring 71×29 mm;
• Make sure that electrical connections comply with the paragraph “wiring diagrams”. To reduce the effects of electromagnetic disturbance, keep the sensor and signal cables well separate from the power wires.
• Fix the controller to the panel by means of the suitable clips, by pressingly gently; if fitted, check that the rubber gasket adheres to the panel perfectly, in order to prevent debris and moisture infiltration to the back of the instrument.
• ATTENTION: during the setup of the controller, please make sure that the parameter INP matches the sensor used, as indicated in the table “input specifications”.
• Place the probe T1 inside the room in a point that truly represents the temperature of the stored product.

OPERATION

DISPLAY
During normal operation, the display shows either the temperature measured or one of the following indications:

MENU INFO
The information available in this menu is:

• Access to menu and information displayed.
  • Press and immediately release button .
  • With button or select the data to be displayed.
  • Press button ■■ to display value.
  • To exit from the menu, press button or wait for 10 seconds.
• Reset of THI, TLO recordings
  • With button or select the data to be reset.
  • Display the value with button .
  • While keeping button pressed, use button .

CHANNEL 1 SETPOINT (display and modification of desired temperature value)

• Press and release button : the LED L1 blinks, the display shows 1SP for 1 second and then the setpoint associated value.
• Press buttons or to set the desired value (adjustment is within the minimum SPL and maximum SPH limit).
• To store the new value press button , or wait for 10 seconds.
• To go back to normal mode without saving the new value, press .

CHANNEL 2 SETPOINT

• With the auxiliary output set as thermostat control (OAU=THR), it’s possible to modify setpoint 2 during the normal operation of the controller.
• Press and release button : the LED L2 blinks, the display shows 2SP for 1 second if setpoint 2 is an absolute threshold (2SM=ABS), alternatively the display shows 2DF, if setpoint 2 is a threshold relative to setpoint 1 (2SM=REL), then the value associated to the parameter appears.
• Press buttons or to set the desired value.
• To store the new value press button or wait for 10 seconds.
• To go back to normal mode without saving the new value, press .

STAND-BY
Button , when pressed for 3 seconds, allows the controller to be put on a standby or output control to be resumed (with SB=YES only).

KEYPAD LOCK
The keypad lock avoids undesired, potentially dangerous operations, which might be attempted when the controllers is operating in a public place. In the INFO menu, set parameter LOC=YES to inhibit all functions of the buttons. To resume normal operation of keypad, adjust setting so that LOC=NO.

CONTROLLER AUTOTUNING IN PID MODE

Before starting
In the setup mode (see configuration parameters): set 1CM=PID; make sure that 1CH matches the desired operation mode (1CH=REF for refrigerating control, 1CH=HEA for heating control); then adjust setpoint 1SP at the desired value.

Start autotuning
During normal operation, keep buttons + pressed for 3 seconds. 1CT blinks on the display. With + or set the cycle time in order to define the dynamic of the process to be controlled. To abort the autotuning function, press ; to start autotuning press + or wait for 30 seconds.

During autotuning
During the entire autotuning phase, the display alternates TUN with the actual temperature measured. In case of power failure, when power is resumed, after the initial autotest phase, the controller resumes the autotuning function. To abort the autotuning, without modifying the previous control parameters, keep button pressed for 3 seconds. After the autotuning has taken place successfully, the controller updates the control parameters and start to control.

Errors
If the autotuning function failed, the display shows an error code:

• E1 timeout1 error: the controller could not bring the temperature within the proportional band. Increase 1SP in case of heating control, vice versa, decrease 1SP in case of refrigerating control and re-start the process.

• E2 timeout2 error: the autotuning has not ended within the maximum time allowed (1000 cycle times). Re-start the autotuning process and set a longer cycle time 1CT.

• E3 temperature overrange: check that the error was not caused by a probe malfunction, then decrease 1SP in case of heating control, vice versa increase 1SP in case of refrigerating control and then re-start the process.

• To eliminate the error indication and return to the normal mode, press button .
  Control improvement

• To reduce overshoot, reduce the integral action reset 1AR

• To increase the response speed of the system, reduce the proportional band 1PB. Caution: doing this makes the system less stable.

• To reduce swings in steady-state temperature, increase the integral action time 1IT; system stability is thus increased, although its response speed is decreased.

• To increase the speed of response to the variations in temperature, increase the derivative action time 1DT. Caution: a high value makes the system sensitive to small variations and it may be a source of instability.

RECALIBRATION

• Have a precision reference thermometer or a calibrator to hand. Ensure that OS1=0 and SIM=0.
• Switch the controller off then on again.
• During the auto-test phase, press buttons + and keep them pressed till the controller shows 0AD.
• With buttons and select 0AD or SAD: 0AD allows a calibration of 0, inserting a constant correction over the whole scale of measurement. SAD allows a calibration of the top part of the measurement scale with a proportional correction between the calibration point and 0.
• Press to display the value and then use + or to make the read value coincide with the value measured by the reference instrument.
• Exit from calibration by pressing button .

Functions

Button Functions

• Info/Enter: Access the menu and information displayed on the screen
• Modify Setpoint 1: Adjust setpoint value for channel 1
• Decrease: Decrease setpoint or navigate menu options
• Increase/Modify Setpoint 2: Adjust setpoint value for channel 2 or increase setpoint
• Exit/Stand-by: Exit menu or put controller on standby mode

Menu Functions

• THI: Displays the maximum temperature recorded
• TLO: Displays the minimum temperature recorded
• LOC: Locks the keypad to prevent unauthorized access to functions

Usage Instructions

1. To display information available in the menu, press and immediately release the Info/Enter button. Use the Decrease or Increase/Modify Setpoint 2 button to select the data to be displayed. Press the Info/Enter button again to display the value. To exit from the menu, press the Exit/Stand-by button or wait for 10 seconds.
2. To reset THI or TLO recordings, use the Decrease or Increase/Modify Setpoint 2 button to select the data to be reset. Display the value with the Info/Enter button. While keeping the Info/Enter button pressed, use the Decrease button to reset the value.
3. To modify setpoint value for channel 1, press and release the Modify Setpoint 1 button. The LED L1 blinks, and the display shows 1SP for 1 second and then the setpoint associated value. Press the Decrease or Increase/Modify Setpoint 2 button to set the desired value. To store the new value, press the Info/Enter button or wait for 10 seconds. To go back to normal mode without saving the new value, press the Exit/Stand-by button.
4. To modify setpoint value for channel 2, ensure that the auxiliary output is set as thermostat control (OAU=THR). Press and release the Increase/Modify Setpoint 2 button. The LED L2 blinks, and the display shows 2SP for 1 second if setpoint 2 is an absolute threshold (2SM=ABS), alternatively, the display shows 2DF if setpoint 2 is a threshold relative to setpoint 1 (2SM=REL), then the value associated with the parameter appears. Press the Decrease or Increase/Modify Setpoint 2 button to set the desired value. To store the new value, press the Info/Enter button or wait for 10 seconds. To go back to normal mode without saving the new value, press the Exit/Stand-by button.
5. To put the controller on standby mode, press and hold the Exit/Stand-by button for 3 seconds. Use SB=YES to resume output control.
6. To lock the keypad, access the INFO menu and set parameter LOC=YES. To unlock the keypad, set parameter LOC=NO.
7. To start autotuning in PID mode, access the setup mode and set 1CM=PID. Ensure that 1CH matches the desired operation mode (1CH=REF for refrigerating control, 1CH=HEA for heating control), and then adjust setpoint 1SP to the desired value.

CONFIGURATION PARAMETERS

• To get access to the parameter configuration menu, press button + for 5 seconds.
• With button or select the parameter to be modified.
• Press button to display the value.
• By keeping button pressed, use button or to set the desired value.
• When button is released, the newly programmed value is stored and the following parameter is displayed.
• To exit from the setup, press button or wait for 30 seconds.

_Caution: upon changing the SCL value, it is then absolutely necessary to reconfigure the param- eters relevant to the absolute and relative temperatures ( SPL , SPH , 1SP , 1HY etc..)_

SPL| -50°…SPH| Minimum limit for 1SP setting
SPH| SPL…150°| Maximum limit for 1SP setting.
1SP| SPL… SPH| Setpoint (value to be maintained in the room).
1CM| HY; PID| Control mode.

With 1CM =HY you select control with hysteresis: parameters 1HY , 1T0 and 1T1 are used.

With 1CM =PID you select a Proportional-Integral-Derivative control mode: parameters 1PB , 1IT , 1DT , 1AR , 1CT will be used

1CH| REF; HEA| Refrigerating (REF) or Heating (HEA) control mode.
1CM =HY| 1HY| 0…19.9°| OFF/ON thermostat differential. With 1HY =0 the output is always off.
1T0| 0…30min| Minimum off time.

After output 1 has been turned off, it remains inactive for 1T0 minutes regardless of the temperature value measured.

1T1| 0…30min| Minimum on time. ( the following parameter will be 1PF ).

After output 1 has been turned on, it remains active for 1T1 minutes regardless of the temperature value measured.

1CM =PID| 1PB| 0…19.9°| Proportional bandwidth.|
Temperature control takes place by changing the ON time of the output: the closer the temperature to the setpoint, the less time of activation. A small proportional band increases the promptness of response of the system to temperature variations, but tends to make it less stable. A purely proportional control stabilises the temperature within the proportional band but does not cancel the deviation from setpoint.  With 1PB =0 the output is always off.
1IT| 0…999s| Integral action time.

The steady-state error is cancelled by inserting an  integral action. The integral action time, determines the speed with which the steady-state temperature is achieved, but a high speed ( 1IT low) may be the response.

1DT| 0…999s| Derivative action time.

Response overshoot may be reduced by inserting  1SP a derivative Action. A high derivative action ( 1DT high) makes the system very sensitive to small temperature variations and causes instability. With    1DT =0 the derivative control is disabled.

1AR| 0…100%| Reset of integral action time referred to 1PB

Decreasing the parameter 1AR reduces the integral control action zone, and consequently the overshoot (see figure on paragraph 1IT ).

1CT| 1…255s| Cycle time.

It’s the period in which the output ON time changes. The quicker the system to be controlled reacts to temperature variations, the smaller the cycle time must be, in order to obtain higher temperature stability and less sensitivity to load variations.

1PF| ON/OFF| Output state in case of probe failure.
OAU| NON; THR; AL0; AL1| AUX output operation.

NON : output disabled (always off). ( the next parameter will be ATM )

THR: output programmed for second thermostat control ( the next parameter will be 2SM ). AL0: contacts open when an alarm condition occurs ( the next parameter will be ATM ).

AL1: contacts make when an alarm condition occurs ( the next parameter will be ATM ).

OAU =THR| 2SM| ABS; REL| Setpoint 2 mode.

Channel 2 setpoint may be absolute ( 2SM =ABS), or a differential relative to setpoint 1 ( 2SM =REL)

2SM =ABS| 2SP| SPL…SPH| Auxiliary output switchover temperature ( the next parameter will be 2CH )
2SM =REL| 2DF| -19.9…19.9°| Temperature differential relative to 1SP. The auxiliary output setpoint is equal to 1SP + 2DF
OAU =THR| 2CH| REF; HEA| Refrigerating control (REF) or heating control mode (HEA) for the auxiliary output.
---|---|---|---
2HY| 0…19.9°| Differential of thermostat 2. With 2HY =0 the auxiliary output always remains off.
2T0| 0…30min| Minimum off time.

After output 2 has been turned off, it remains inactive for 2T0 minutes regardless of the temperature value measured.

2T1| 0…30min| Minimum on time.

After output 2 has been turned on, it remains active for 2T1 minutes regardless of the temperature value measured.

2PF| ON/OFF| Auxiliary output state in case of probe failure.
ATM| NON; ABS; REL| Alarm threshold management.

NON: all temperature alarms are inhibited ( the following parameter will be SB ).
ABS: the values programmed in ALA and AHA represent the real alarm thresholds.
REL: the values programmed in ALR and AHR are alarm differentials referred to 1SP and 1SP+1HY.

ATM =ABS| ALA| -50°…AHA| Low temperature alarm threshold.
AHA| ALA…150°| High temperature alarm threshold.
ATM =REL| ALR| -12.0…0°| Low temperature alarm differential.

With ALR =0 the low temperature alarm is excluded

AHR| 0…12.0°| High temperature alarm differential.

With AHR =0 the high temperature alarm is excluded

ATD| 0…120min| Delay before alarm temperature warning.
SB| NO/YES| Stand-by button enabling.
INP| 0mA/4mA, T1/T2 ST1/SN4| Sensor input selection (see table of input specifications).

In the models AC1-5A…, AC1-5J…, AC1-5T… only.

RLO| -19.9…RHI| Minimum range value ( in the models AC1-5A…, AC1-5I… only )

RLO takes the minimum value measured by the transmitter (i.e. the value matching 0V, 0/4mA).

RHI| RLO…99.9| Maximum range value ( in the models AC1-5A…, AC1-5I… only )

RHI takes the maximum value measured by the transmitter (i.e. the value matching 1V, 20mA)

OS1| -12.5…12.5°| Probe T1 offset.
TLD| 1…30min| Delay for minimum temperature (TLO) and maximum temperature (THI) logging.
SIM| 0…100| Display slowdown
ADR| 1…255| AC1-5 address for PC communication

INPUT SPECIFICATIONS

[< ±0.6°F(-20÷260°),±2°F]
INP=SN4| NTC 10K Ω (LAE SN4..)| -40/-19.9 ÷ 99.9/125°C [<±0.3°C(-40÷100°),±1°C]| -40 ÷ 125°C [<±0.3°C(-40÷100°),±1°C]| -40 ÷ 260°F [<±0.6°F(-40÷210°), ±2°F]

WIRING DIAGRAMS

TECHNICAL DATA

• Power supply
  • AC1-5…D 12Vac/dc ±10%, 2W
  • AC1-5…W 110 – 230Vac±10%, 50/60Hz, 2W
• Relay outputs (AC1-5..R..)
  • OUT1 12(4)A
  • OUT2 7(2)A
• SSR drive (AC1-5..M..)
  • OUT1 15mA 12Vdc
• Inputs see table of input specifications
• Measurement range see table of input specifications
• Measurement accuracy see table of input specifications
• Operating conditions -10 … +50°C; 15%…80% U.R.
• CE (Reference Norms)
  • EN60730-1; EN60730-2-9;
  • EN55022 (Class B); EN50082-1
• Front protection IP55

VIA PADOVA, 25
31046 ODERZO /TV /ITALY
TEL. +39 – 0422 815320
FAX +39 – 0422 814073
www.lae-electronic.com
E-mail: [email protected]

References

• electronic.com is for sale | www.oxley.com
• Lae Electronic

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