Preface
P–1
Publication 1336 IMPACT-6.2 – March 1998
Preface
The information in this manual is designed to help troubleshoot or
repair an Allen-Bradley Bulletin 1336 IMPACT Adjustable
Frequency AC Drive with ratings A020 – A030, B040, B050,
BX040, BX060, and C025 – C060.
This manual is intended for qualified service personnel responsible
for troubleshooting and repairing the 1336 IMPACT Adjustable
Frequency AC Drive. You should:
• Read this entire manual before performing maintenance or repairs
to drives.
• Have previous experience with, and basic understanding of,
electrical terminology, procedures, required troubleshooting
equipment, equipment protection procedures and methods, and
safety precautions.
This manual describes equipment, troubleshooting, and disassembly
procedures. You begin with general illustrations and end with greater
detail concerning replacement parts and part locations on the drives.
Later chapters may refer you back to earlier chapters for information
on basic equipment and steps necessary to perform detailed
diagnostics and part replacement.
!
ATTENTION: Some printed circuit boards and drive
components may contain hazardous voltage levels.
Remove and lock out power before you disconnect or
reconnect wires and before you remove or replace
fuses and circuit boards. Verify bus voltage by
measuring the voltage between +DC and –DC on
terminal block TB1. Do not attempt to service the drive
until the bus voltage has discharged to zero volts.
Manual Objective
Who Should Use This
Manual
Safety Precautions
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