Danfoss VLT FC 300 Service Manual

6.1.2 Signal Test Board 70
6.2 Access to DC Bus
70
6.3 Static Test Procedures
70
6.3.1 Pre-check Precautions 70
6.3.2 Rectifier Circuits Test 73
6.3.3 Inverter Section Tests 73
6.3.4 Brake IGBT Test 74
6.3.5 Intermediate Section Tests 74
6.3.6 IGBT Temperature Sensor Test 75
6.3.7 Gate Resistor Test 75
6.3.8 Electrical Fuse Test 75
6.3.9 Disconnect Test 76
6.3.10 Circuit Breaker Test 76
6.3.11 Contactor Test 76
6.4 Dynamic Test Procedures
77
6.4.1 No Display Test 79
6.4.2 Input Voltage Test 79
6.4.3 Basic Control Card Voltage Test 79
6.4.4 DC Bus Voltage Test 80
6.4.5 Switch Mode Power Supply (SMPS) Test 80
6.4.6 Input Imbalance of Supply Voltage Test 80
6.4.7 Input Waveform Test 81
6.4.8 Input SCR Test 81
6.4.9 Output Imbalance of Motor Voltage and Current 82
6.4.10 IGBT Switching Test 83
6.4.11 IGBT Gate Drive Signals Test 83
6.4.12 Current Sensors Test 86
6.4.13 Fan Tests 87
6.4.14 Input Terminal Signal Tests 88
6.5 After Repair Tests
89
7 Disassembly and Assembly Instructions
91
7.1 Introduction
91
7.2 Electrostatic Discharge (ESD)
91
7.3 D1h/D3h Disassembly and Assembly Instructions
91
7.3.1 General Information 91
7.3.2 Control Card and Control Card Mounting Plate 91
7.3.3 Power Card Mounting Plate 92
7.3.4 Power Card 93
Contents Service Manual
MG94A222 Danfoss A/S © Rev. 2014-02-10 All rights reserved.

Danfoss VLT FC 300 Specifications

General

Brand	Danfoss
Model	VLT FC 300
Category	DC Drives
Language	English