Siemens 3RS2

A1(+) A2(-)
33NO 34NO AI+
AI-
'HYLFH
&20
7
777
77
56$$
56$$
56$:
56$:
Figure 7-1 LEDs of the sensor expansion modules
7.5.2 Status display
Status Green LED "Device" Red LED "COM"
Device ready + communication set up ON OFF
Device ready + communication error ON Flickering
Device not ready / internal fault / no power supply OFF OFF
Sensor expansion module
7.5 Operator control
3RS2 temperature monitoring relay
Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002 65