Siemens SIMATIC NET RUGGEDCOM RS900L Installation Manual page 27

Installing the Device
2.6.2 Connecting Low DC Power
4.
5.
6.
18
[Optional] If a redundant connection is required, repeat
connect the secondary power inputs.
2 2
1 3 1
Positive Terminal
1
Negative Terminal
2
Surge Ground Terminal
3
Braided Ground Cable
4
Figure 2.8 Terminal Block Wiring – Dual DC Power Supply Inputs
Using a braided wire or other appropriate grounding wire, connect the surge
ground terminal to the chassis ground connection. The surge ground terminal
is used as the ground conductor for all surge and transient suppression circuitry
internal to the unit.
Connect the ground wire from the power source to the chassis groun terminal
on the terminal block.
Step 2 and
4
± ±
± ±
Installation Manual, 04/2021, C79000-G8976-1027-09
Step 3 to
RUGGEDCOM RS900L