Connection Of Thermocouples And Resistance Sensors - Siemens 3RS2 Manual

Step Instructions
1 Press the clip of the terminals up‐
wards.
2 Pull the terminals out to the front.
3 Lift the terminals out of the guide
rail of the device.
11.13

Connection of thermocouples and resistance sensors

NOTICE
Connection of thermocouples and resistance sensors
Connect the thermocouples and resistance sensors before switching on the device.
Selection of the temperature range and the sensor type
Analog variants
With an analog device, not only Pt100 sensors, but also thermocouples (J, K) can be used.
Overshoot/undershoot, hysteresis and the measuring range are adjustable. Pt1000 sensors can
only be used with the digital devices.
The maximum cable length for resistance sensors with a cable diameter of 1.5 mm² is 500 m.
Digital versions with display
Digital versions are suitable for all common resistance sensors and thermocouples (see Sensor
types (Page 32)).
3RS2 temperature monitoring relay
Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002
11.13 Connection of thermocouples and resistance sensors
Figure
Connection
85