Danfoss VLT 3006-3032

0 - 1
Introduction
Safety Precautions 0 - 2
Required Tools 0 - 3
Section One
Description of Operation 1 - 1
Sequence of Operation 1 - 4
Section Two
Fault Indicators and Messages 2 - 1
Troubleshooting Tips 2 - 5
Troubleshooting Flowchart 2 - 6
Symptom/Cause Chart 2 - 9
Section Three
Static Test Procedures 3 - 1
Dynamic Test Procedures 3 - 6
Section Four
Component Replacement Procedures 4 - 1
Section Five
Current Limit Trips 5 - 1
Ground Fault Trips 5 - 3
Overcurrent Trips 5 - 3
Overvoltage Trips 5 - 4
Fault Memory 5 - 6
Section Six
Spare Parts Tables 6 - 1
Appendix
Component Locations 7 - 1, 7 - 5
Block Diagrams 7 - 2, 7 - 6
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Table of Contents

Danfoss VLT 3006-3032 Specifications

General

Output Signal	4-20 mA
Supply Voltage	10-30 V DC
Enclosure Rating	IP65
Category	Transducer
Accuracy	±0.5% FS (typical)
Process Connection	G 1/4 A, G 1/2 A, 1/4-18 NPT (depending on model)

Summary

Section One: Unit Operation Overview

Section Two: Faults, Warnings, and Troubleshooting

Fault Indicators and Messages

Warning Messages

Alarm Messages

General Troubleshooting Tips

Essential tips for safe and effective troubleshooting of the drive unit.

Troubleshooting Flowchart

Flowchart to diagnose symptoms like unstable operation or motor not running.

SymptomCause Charts

Lists symptoms like display not lit or blown fuses with possible causes.

Section Three: Static and Dynamic Testing Procedures

Static Test Procedures

Procedures for testing diodes, rectifier, and other components with a meter.

Testing the Input Rectifier

Detailed steps for statically testing the input rectifier module for faults.

Testing the Soft-Charge Circuit

Testing the Inverter Section

Steps to test the inverter section for failures in IGBT power devices.

Dynamic Test Procedures

Procedures for testing dynamic performance and component behavior.

Testing for Output Phase Voltage Imbalance

Methods to test for balanced output voltage and current.

Testing for Current Feedback

Testing Gate Drive Firing Circuits

Section Four: Component Replacement

Component Replacement Procedures

General guidelines for removing and replacing components within the unit.

Removing and Replacing the Control Card

Detailed steps for safely removing and installing the Control Card.

Replacing ILD, DC, Rectifier Cards, and IGBTs

Procedures for replacing ILD, DC, Rectifier cards, and IGBT modules.

Six-Pack IGBT Module Replacement

Specific IGBT Module Replacement

Replacing Interface, Relay Cards, Rectifier, and IGBTs

Procedures for replacing Interface, Relay cards, Rectifier, and IGBTs.

Rectifier Module Replacement

IGBT Module Installation

Section Five: Applications and Operational Issues

Current Limit Trips Explained

Causes and parameter settings related to current limit trips.

Unstable Motor Operation

Ground Fault Trips

Overcurrent Trips

Overvoltage Trips Due to Regeneration