INFICON T-Guard Leak Detection Sensor - Manual (Page 36)

34
Installation
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4.6.2 Electrical connection of the PLC inputs
The default setting is as follows:
Signal level:
24 V (low-resistance) means High,
0 V (high-resistance) means Low,
Change from LOW to HIGH:
The programmed command for the input is enabled (edge controlled).
Pin Command Explanation
1 Start
2 Stop
3 Cal
4 Proof
5 Clear:
6 Standby
7 Common Common negative pole for all PLC inputs.
Connect to the negative pole of the power supply.
Caution
Max. permissible input voltage of the digital inputs: 28 V.
Fig. 5-2 Electrical connection of the PLC inputs
1
2
3
4
5
6
7
PLC IN/OUT
24V