Siemens SIMATIC NET RUGGEDCOM RSG909R Installation Manual page 22

To connect the failsafe alarm relay, do the following:
1.
2.
RUGGEDCOM RSG909R
Installation Manual, 02/2021, C79000-G8976-1388-12
Insert the failsafe alarm relay terminal block into the device and tighten the
screws.
Figure 2.6 Assembling the Failsafe Alarm Relay Terminal Block
Connect a failsafe device to the terminal block.
Failsafe Alarm Relay Terminal Block
1
Normally Open
2
Common
3
Normally Closed
4
Figure 2.7 Failsafe Alarm Relay Wiring
2.5 Connecting the Failsafe Alarm Relay
2 3 4
1
Installing the Device
13