User Manual

PID Settings
The PID or On/Off control feature can be used by setting the parameters determined for each analog input
in the module. The analog input with PID or ON/OFF function activated controls the corresponding digital
output. The digital output associated with the channel whose PID or ON/OFF function is activated cannot
be driven manually.
Analog input AI1 controls digital output DO1.
Analog input AI2 controls digital output DO2.
Analog input AI3 controls digital output DO3.
Analog input AI4 controls digital output DO4.
Analog input AI5 controls digital output DO5.
PID Parameters:
Parameter Description
PID Active Enables PID or ON/OFF operation.
0 = Manual use 1 = PID active 2 = ON/OFF active
Set Value
It is the set value for PID or ON/OFF operation. PT100 values can be between -200.0
and 650.0 for input, 0 and 20000 for other types.
Set Offset It is used as Set Offset value in PID operation. It can take values between -325.0 and
325.0 for PT100 input, -10000 to 10000 for other types.
Set Hysteresis It is used as Set Hysteresis value in ON/OFF operation. It can take values between
-325.0 and 325.0 for PT100 input, -10000 to 10000 for other types.
Minimum Scale Value Working scale is the lower limit value. PT100 values can be between -200.0 and
650.0 for input, 0 and 20000 for other types.
Maximum Scale Value Working scale is the upper limit value. PT100 values can be between -200.0 and
650.0 for input, 0 and 20000 for other types.
Heating Proportional Value Proportional value for heating. It can take values between 0.0 and 100.0.
Heating Integral Value Integral value for heating. It can take values between 0 and 3600 seconds.
Heating Derivative Value Derivative value for heating. It can take values between 0.0 and 999.9.
Cooling Proportional Value Proportional value for cooling. It can take values between 0.0 and 100.0.
Cooling Integral Value Integral value for cooling. It can take values between 0 and 3600 seconds.
Cooling Derivative Value Derivative value for cooling. It can take values between 0.0 and 999.9.
Output Period Output is the control period. It can take values between 1 and 150 seconds.
Heating/Cooling Select Specifies the channel operation for PID or ON/OFF.
0 = Heating 1 = Cooling
Auto Tune Starts Auto Tune operation for PID.
0 = Auto Tune passive 1 = Auto Tune active
* Note: For the values in dotted notation, 10 times the real value of these parameters are used in Modbus
communication.
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