Operator Control; Leds - Siemens 3RS2 Manual

Sensor expansion module

7.5 Operator control

• KTY84 (monitoring for overshoot/undershoot)
• NTC
1) NTC type: B57227-K333-A1 (100 °C: 1.8 kΩ; 25 °C: 32.762 kΩ)
For more detailed information, refer to Chapter Resistance sensors (Page 69).
Note
Using the current input 4 ... 20 mA
If you use the 4 ... 20 mA current input (selectable via the operating menu), all other sensor
inputs are inactive.
7.5 Operator control
7.5.1

LEDs

The following LEDs are mounted on the front of the sensor expansion modules:
64
(monitoring for overshoot)
1)
3RS2 temperature monitoring relay
Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002