MESSTEC Power Converter GmbH
Operating Manual
TEC Controller
Document: 10100920OM
Revision: 1.1
Date: 10.10.2019
Page 41/71
7.2.6. Temperature Sensor X4
The temperature sensor must be assembled galvanically isolated. Make
strictly sure that there is no electrical connection to any other potential.
Note: The temperature sensor interface is designed for RTD (Resistance
Temperature Detector) sensors. Do not use integrated circuit or active
temperature sensors in any case!
If the RTD sensor is polarized, the higher potential leads of the sensor are
wired to the A-pins of the interface.
Note: A potential difference on the sensor inputs below 0,08 V (short circuit)
or above 2,35 V (open circuit) will release a SENSOR Error.
Pin
Name
Function
1
TS-SUPP-A
Temperature Sensor Supply A
2
TS-SENS-A
Temperature Sensor Input A
3
TS-SENS-B
Temperature Sensor Input B
4
TS-SUPP-B
Temperature Sensor Supply B
5
GNDA
Analog Signal GND
TS-SUPP-A (X4-1)
Temperature Sensor Supply A
Current Source Contact A
Used for 4-wire and 2-wire sensor cabling.
TS-SENS-A
– Input (X4-2)
Temperature Sensor Input A
Used for 4-wire sensor cabling.
TS-SENS-B
– Input (X4-3)
Temperature Sensor Input B
Used for 4-wire sensor cabling.
TS-SUPP-B (X4-4)
Temperature Sensor Supply B
Current Source Contact B
Used for 4-wire and 2-wire sensor cabling.
GNDA
– (X4-5)
Analog Signal GND
Shield of temperature sensor cabling (if required).