Connecting Power - Siemens SIMATIC NET RUGGEDCOM RSG908C Equipment Manual

Installing the Device
2.5 Connecting Power
2.5

Connecting Power

The RUGGEDCOM RSG908C features two input terminals that allow the device to be
powered by:
•
•
Note
The RUGGEDCOM RSG908C is a dual input power supply system. Due to this
structure, induced voltages will be observed between the positive/live and chassis/
ground terminals, and between the negative/neutral and chassis/ground terminals.
Electrical hazard – risk of damage to the device
Do not connect more than one HI AC/DC power supply to the device. Connecting
more than one HI AC power supply could result in electrical damage to the device.
Electrical hazard – risk of power disruption
Due to power supply safety features, some AC/DC voltage will be coupled to
the redundant power terminals (between the positive/live and chassis/ground
terminals, and between the negative/neutral and chassis/ground terminals). While
12
Failsafe Alarm Relay Terminal Block
1
Normally Open
2
Common
3
Normally Closed
4
Figure 2.6 Failsafe Alarm Relay Wiring
Up to one independent AC and one independent DC power source
Two independent DC power sources
CAUTION
NOTICE
2 3 4
1
RUGGEDCOM RSG908C
Equipment Manual, 11/2023, C79000-G8976-1404-15