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Connecting to DC Power

WARNING: In device installations in a hazardous location, the DC power source could be located away

from the vicinity of the device. Before performing any of the following procedures, locate the DC circuit to

ensure that the power is removed and cannot be turned on accidentally, or verify that the area is nonhazardous

before proceeding. Statement 1059

WARNING: Installation of the equipment must comply with local and national electrical codes. Statement

1074

WARNING: Explosion Hazard—Substitution of components may impair suitability for Class I, Division

2/Zone 2. Statement 1083

You connect DC power to the device through the front panel connectors. The device has a dual-feed DC power

supply; two connectors provide primary and secondary DC power (DC-A and DC-B).

Each power connector has an LED status indicator. The device power connectors are attached to the device

chassis. Each power connector has screw terminals for terminating the DC power. All connectors are attached

to the device front panel with the provided captive screws.

The power connector labeling is on the panel. The positive DC power connection is labeled "+", and the return

connection is labeled "–".

The device can operate with a single power source or with dual power sources. When both power sources are

operational, the device draws power from the DC source with the higher voltage. If one of the two power

sources fail, the other continues to power the device.

To connect DC power to your Cisco IC3000, follow these steps:

Step 1

Locate the two power connectors on the device front panel labeled DC-A and DC-B.

Figure 9: Power Connector

Step 2

Identify the connector positive and return DC power connections. The "+" is the Positive DC power connection, and the

"-" is the Return DC power connection.

Step 3

Measure two strands of twisted-pair copper wire long enough to connect the power converter to the DC power source.

For DC connections from the power converter to the DC source, use 18 to 20 AWG (2.6mm) twisted-pair copper wire.

Step 4

Using a 18-gauge (1.02mm) wire-stripping tool, strip the ground wire and both ends of the twisted pair wires to 0.25 inch

(6.3 mm) ± 0.02 inch (0.5 mm). See

strip more than 0.27 inch (6.8 mm) of insulation from the wires. Stripping more than the recommended amount of wire

can leave exposed wire from the power and relay connector after installation.

Cisco IC3000 Industrial Compute Gateway Hardware Installation Guide

Figure 10: Stripping the Power Connection Wire, on page

Connecting the Cisco IC3000

27, number 1. Do not