1
Page
Introduction
2
Safety
2
Description of Operation
5
Sequence of Operation
9
Status Messages
11
Warning Messages
12
Alarm Messages
13
Troubleshooting Tips
17
Flow Charts
18
Symptom/Cause Charts
21
Testing the Soft Charge Circuit
23
Testing the Input Rectifiers
25
Testing the Inverter Section
26
Testing the Heatsink Temperature Sensor
27
Testing for Output Phase Imbalance
27
Testing Gate Drive Firing Circuits
28
Testing Input Rectifiers
30
Testing for Current Feedback
30
Removing and Replacing the Control Card
31
Removing and Replacing the Interface Board
31
Removing and Replacing Gate/Snubber/IGBT
32
Removing and Replacing Input Rectifiers
33
Current Limit Trips
35
Unstable Motor Operation
35
Ground Fault Trips
37
Overcurrent Trips
37
Overvoltage Trips
38
Overtemperature Trips
39
Additional Fault Codes
I
Spare Parts List
II
Block Diagram VLT 3032
III
Block Diagram VLT 3042
IV
Block Diagram VLT 3052
V
Table of Contents
Section Three Dynamic
Test Procedures
Section Three Static
Test Procedures
Section Two
Section One
Section Four
Section Five
Appendix
