Determining Your Type Of Input Power; Grounded Power Configuration - AB Quality Allen-Bradley 1394 User Manual

3-6 Wiring System, Axis, and Shunt Modules, and Motors (for all systems)
Determining Your Type of Input
Power
Conduit/4-Wire Cable
Ground grid or
Power distribution ground
Publication 1394-5.0 — May 2000
Before you ground or wire your 1394 system you must determine the
type of 360/480V input power you will be connecting to. The 1394
system is designed to operate in both grounded and ungrounded
environments.

Grounded Power Configuration

As shown in the figure below, the grounded power configuration
allows you to ground your 3-phase power at a neutral point. Each
1394 system module has a factory-installed jumper configured for
grounded power distribution. If you determine that you have
grounded power distribution in your plant you do not need to modify
your system.
Figure 3.2
Grounded Power Configuration
Status
DANGER
RISK OF ELECTRICAL SHOCK. HIGH VOLTAGE MAY
EXIST UP TO FIVE MINUTES AFTER REMOVING POWER.
U
V
W
PE
PE1
PE3 (drain/shield)
1326 motor
PE2 (wire 8)
power cable
W1 (wire 3)
V1 (wire 2)
U1 (wire 1)