Siemens SIMATIC NET RUGGEDCOM RS900F Installation Manual page 25

Installing the Device
2.5.2 Connecting Low DC Power
Figure 2.7
3. Connect the negative wire from the power source to the negative/neutral (-/N)
terminal on the terminal block.
4. Connect the ground wire from the power source to the chassis groun terminal
on the terminal block.
2.5.2 Connecting Low DC Power
RUGGEDCOM RS900F's equipped with 24 or 48 V power supply inputs feature reverse
polarity protection and dual power supply inputs allowing the device to accept re-
dundant connections to a single DC power supply.
To connect a low DC power supply to the device, do the following:
Note
Torque all terminal connections to 0.6 N·m (5 lbf-in).
1. Secure the power terminal block to the device.
16
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2 2
1 3 1
Positive Terminal
1
Negative Terminal
2
Surge Ground Terminal
3
Braided Ground Cable
4
Terminal Block Wiring – Dual DC Power Supply Inputs
4
± ±
± ±
Installation Manual, 02/2020, C79000-G8976-1350-04
RUGGEDCOM RS900F