Siemens SIMATIC NET RUGGEDCOM RST2228 Equipment Manual page 33

Installing the device
2.4 Connecting the failsafe alarm relay
Terminal block
The failsafe alarm relay is connected via the failsafe alarm relay terminal block port.
1
Figure 2.4
Terminal designations are marked on the device for easy identification.
1
1
2
3
4
5
Figure 2.5
Procedure
To connect the failsafe alarm relay, do the following:
Note
The screw-type terminal block is installed using Phillips screws and compression
plates, allowing either bare wire connections or crimped terminal lugs.
Use M3.5 ring tongues that have short insulated ring terminals with a maximum
distance of 5 mm (0.2 in) from the ring center to the insulation.
1.
2.
24
3 4
Failsafe alarm relay terminal block port
3 4
European-style (Euroblock) terminal block
Screw-type terminal block
Normally closed terminal
Common terminal
Normally open terminal
Failsafe alarm relay terminals
Remove the safety cover.
If equipped, remove the failsafe alarm relay terminal block plug from the device.
2
5
2
5
3 5
4
3 5
4
RUGGEDCOM RST2228
Equipment Manual, 10/2023, C79000-G8976-1359-19