Danfoss VLT AAF006 Service Manual page 4

Contents
5.3 Internal Active Filter Problems
5.3.1 Overtemperature Faults
5.3.2 Current Feedback Problems
5.3.3 Noise On CT Input
5.3.4 Effect of EMI
6 Test Procedures
6.1 Introduction
6.1.1 Tools Required for Testing
6.1.2 Signal Test Board
6.2 Static Test Procedures
6.2.1 Inverter Section Tests
6.2.1.1 Inverter Test Part I
6.2.1.2 Inverter Test Part II
6.2.1.3 Inverter Test Part III
6.2.1.4 Inverter Test Part IV
6.2.2 Gate Resistor Test
6.2.3 Intermediate Section Tests
6.2.4 Heatsink Temperature Sensor Test
6.2.5 Fan Continuity Tests
6.2.5.1 Fan Fuse Test
6.2.5.2 Ohm Test of Transformer
6.2.5.3 Ohm Test of Fans
6.2.6 AC Line power Contactor and Soft Charge Contactor Tests
6.3 Dynamic Test Procedures
6.3.1 No Display Test
6.3.2 Input Voltage Test
6.3.3 Control Card Basic Voltage Test
6.3.4 Switch Mode Power Supply (SMPS) Test
6.3.5 Current Sensors Test CT1, CT2, CT3
6.3.6 Input Terminal Signal Tests
6.3.7 Line Power Resonance Test
6.3.8 Control Card Digital Inputs/Outputs Test
6.4 After Repair Tests
7 D-Frame Sizes Disassembly and Assembly Instructions
7.1 Electrostatic Discharge (ESD)
7.2 Passive Section (Top) Instructions
7.2.1 Control Card and Control Card Mounting Plate
VLT Advanced Active Filter AAF006 D and E Frames Service Manual
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MG90Z122 - VLT is a registered Danfoss trademark
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