Siemens RUGGEDCOM RSG907R - Page 22

Installing the Device
2.5Connecting Power
2.5 Connecting Power
The RUGGEDCOM RSG907R features two input terminals that allow the device to be
powered by:
• Up to one independent AC and one independent DC power source
• Two independent DC power sources
IMPORTANT
• For 110/230 VAC rated equipment, an appropriately rated AC circuit breaker
must be installed.
• For 125/250 VDC rated equipment, an appropriately rated DC circuit breaker
must be installed.
• Use minimum #16 gage copper wiring when connecting terminal blocks.
• Equipment must be installed according to applicable local wiring codes and
standards.
2.5.1 Connecting AC or DC Power
The device features dual power supply inputs to allow for redundant connections to
separate, independent AC or DC power supplies. Each power supply terminal block
provides reverse polarity protection.
To connect an external AC or DC power source to the device, do the following:
Note
For examples of the supported wiring configurations, refer to "Wiring Examples (Page
15)".
WARNING
Electrocution hazard – risk of personal injury
When only one AC power source is connected to the device, the secondary power
terminals are energized. To prevent contact with the terminals and avoid an
electrical shock, do the following when one AC power source is connected to the
device:
• Make sure a terminal block is installed in the unused port and that any wires
from the secondary terminal block are properly terminated
• Make sure the first power source is off before connecting (or disconnecting) a
second power source
1. If connecting a secondary power source, make sure the power source currently
connected to the device is disabled (e.g. power cable is unplugged from the wall
receptacle).
RUGGEDCOM RSG907R
Installation Manual, 10/2020, C79000-G8976-1387-10
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