Siemens RUGGEDCOM RS920W, Installation Manual

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Chapter 2
Installing the Device
RUGGEDCOM RS920W
Installation Guide
10 Connecting Power
1 2 3
Figure 4: Failsafe Alarm Relay Wiring
1. Normally Closed 2. Common 3. Normally Open
Section 2.6
Connecting Power
The RUGGEDCOM RS920W supports power input from a single high AC/DC or low DC power supply.
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.
• All line-to-ground transient energy is shunted to the Surge Ground terminal. In cases where users
require the inputs to be isolated from ground, remove the ground braid between Surge and Chassis
Ground. Note that all line-to-ground transient protection circuitry will be disabled.
CONTENTS
• Section 2.6.1, “Connecting High AC/DC Power”
• Section 2.6.2, “Connecting Low DC Power”
Section 2.6.1
Connecting High AC/DC Power
To connect a high AC/DC power supply to the device, do the following:
CAUTION!
Electrical hazard – risk of damage to equipment. Do not connect AC power cables to terminals for DC
power. Damage to the power supply may occur.