24 CompTrol Interface V4.0.x | Issue 21-05-2021 | 1000932
Functions of the CompTrol Interface expansion module
5.1.3 Resistive circuit
If a xed temperature setpoint is to be transferred to the indoor units, two xed resistors or two
potentiometers can be connected to analog inputs X3-S + X3-(+RV) and X3-S + X3-(-RV) to act
as voltage dividers. A temperature setpoint between 18 °C and 30 °C can be specied.
Resistive circuit operation for analog input is possible in the following programs:
– Program 0 and programs 2 to 7.
IU
3
2
1
54
78
6
Figure 6: Resistive circuit at analog input X3-S
No. Name No. Name
1 Indoor unit 2 X/Y remote control bus
3 Wired remote control RC-EX1 or RC-EX3 4 Volt-free digital outputs
5 Digital inputs 6 CompTrol Interface expansion module
7 Resistor R1 8 Resistor R2