Siemens RUGGEDCOM RS900 Installation Manual page 24

Chapter 2
Installing the Device
Figure 8: Terminal Block Wiring – Single DC Power Supply Inputs
1. Positive Terminal 2. Negative Terminal 3. Surge Ground Terminal 4. Braided Ground Cable
3. Connect the negative wire from the power source to the negative terminal on the terminal block.
4. [Optional] If a redundant connection is required, repeat
inputs.
14
2
1 3
4
±
±
Step 2 and Step 3 to connect the secondary power
RUGGEDCOM RS900
Installation Guide
Connecting Low DC Power