Rockwell Automation 1395 Digital DC Drive FRN 5-10.10/9.30 User Manual

Page 141

Chapter 6
Installation

6-17

ATTENTION: The motor field supply is phase sensitive. To
guard against possible drive/motor damage, ensure that the
connections are properly made according to Figure 6.10.

Figure 6.10
Power Connections – Standard Field Voltage

F+

F–

DC Motor Shunt Field*

TB8

TB7

ЗЗ

A1+

Front Bus Bar

Back Bus Bar

DC Motor Armature*

FRONT VIEW OF

DRIVE

Line Reactor Isolation

Transformer

125-300 HP, 230VAC
250-600 HP, 460VAC
MKVA Series B

User Installed Semiconductor
Fuses – 50A (Type FWH refer
to Note #2 in Figure 6.11 )

AC Field Input

DC Field Output

NOTE: Wires must be tapped
off before current transformers

IMPORTANT
If the AC input power system does
not have a neutral or one phase
referenced ground, an isolation
transformer with the neutral of the
secondary grounded is highly
recommended. If the line-to-line
voltages on any phase can exceed
125% of the nominal line-to-line
voltage, an isolation transformer
with the neutral of the secondary
grounded, is always required.

Current Transformers

Bus Bars

4. Typical external field transformer connections are shown in Figure 6.11

for a motor rated 240 volt armature, 240V field.