Table of Contents
Chapter 3
Part Replacement Procedures
AC Current Transducer
Replacement
80
1. Install the Isolation sheet (if present) before installing the pulse
transformer and switching power supply boards.
ATTENTION: Failure to install the Isolation sheet below the pulse transformer
and switching power supply boards can result in damage to the drive.
2. Install the configured pulse transformer board and switching power
supply board in reverse order of removal.
ATTENTION: Each gate lead cable must be connected to the exact connector
from which it was removed on the pulse transformer circuit board or damage
to the drive can occur. See
gate lead pinouts.
Remove the AC Current Transducers
IMPORTANT AC current transducers must be replaced in pairs.
Follow these steps to remove the AC current transducers.
1. Read the General Safety Precautions on page 10.
2. Remove power from the drive (see page 46).
3. Remove the protective covers (see page 50).
4. Remove the control EMI shield and control circuit board (see page 66).
5. Remove the pulse transformer and switching power supply circuit
boards (see page 68).
The drive rating determines the power bridge configuration and where
the AC current transducers are in the drive:
• For these drive ratings the AC current transducers are installed on the
power traces board.
– 230V AC input: 55 A / 15 Hp
– 460V AC input: up to 52A / 30 Hp
See AC Current Transducers on Drives with a Power Traces Board on
page 81.
• For these drive ratings the AC current transducers are installed on
bus bars inside the drive.
– 230V AC input: 73 A / 20 Hp and higher
– 460V AC input: 73 A / 40 Hp and higher
See AC Current Transducers on Drives with Bus Bars on page 83.
Rockwell Automation Publication 20P-TG001C-EN-P - February 2018
Figure 15
on page
114
or
Figure 16
on page
114
for
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