Poe Power Requirements; Connecting Low Dc Power - Siemens RUGGEDCOM RS900GP Installation Manual

RUGGEDCOM RS900GP
Installation Guide
NOTE
Power sources can be connected to either power supply terminal block on the device.
IMPORTANT!
• Use only #16 gage copper wiring when connecting terminal blocks.
• Equipment must be installed according to applicable local wiring codes and standards.
The following sections describe how to connect power to the device:
• Section 2.2.1, "PoE Power Requirements"
• Section 2.2.2, "Connecting Low DC Power"
Section 2.2.1

PoE Power Requirements

The RUGGEDCOM RS900GP supports eight 10/100Base-TX Power-over-Ethernet (POE) Ports that require
external power.
To support the IEEE 802.3at specification (30 W/port output), the external power supply must meet the following
requirements:
Power Supply Type
DC
To support the IEEE 802.3af specification (15 W/port output), the external power supply must meet the following
requirements:
Power Supply Type
DC
Section 2.2.2

Connecting Low DC Power

The RUGGEDCOM RS900GP features a single low DC power supply, which accepts input one or more DC
power sources. The use of both power supply inputs is recommended to provide redundancy.
IMPORTANT!
For Power-over-Ethernet (PoE) support, make sure the external power supply meets the requirements.
For more information, refer to
To connect a low DC power supply, do the following:
1. Connect the positive wire from the power source to the positive terminal on either terminal block.
PoE Power Requirements
Input Range
Minimum Maximum
51 VDC 57 VDC
Input Range
Minimum Maximum
45 VDC 57 VDC
Section 2.2.1, "PoE Power
Isolation
1.5 VAC/2.2 kVDC
Isolation
1.5 VAC/2.2 kVDC
Requirements".
Chapter 2
Installing the Device
Minimum
Power Required
255 W
Minimum
Power Required
135 W
9