Danfoss VLT AAF006 - Page 4

5.3 Internal Active Filter Problems
5-3
5.3.1 Overtemperature Faults 5-3
5.3.2 Current Feedback Problems 5-3
5.3.3 Noise On CT Input 5-4
5.3.4 Effect of EMI 5-4
6 Test Procedures
6-1
6.1 Introduction
6-1
6.1.1 Tools Required for Testing 6-2
6.1.2 Signal Test Board 6-2
6.2 Static Test Procedures
6-2
6.2.1 Inverter Section Tests 6-2
6.2.1.1 Inverter Test Part I 6-2
6.2.1.2 Inverter Test Part II 6-2
6.2.1.3 Inverter Test Part III 6-3
6.2.1.4 Inverter Test Part IV 6-3
6.2.2 Gate Resistor Test 6-3
6.2.3 Intermediate Section Tests 6-3
6.2.4 Heatsink Temperature Sensor Test 6-4
6.2.5 Fan Continuity Tests 6-4
6.2.5.1 Fan Fuse Test 6-4
6.2.5.2 Ohm Test of Transformer 6-4
6.2.5.3 Ohm Test of Fans 6-4
6.2.6 AC Line power Contactor and Soft Charge Contactor Tests 6-5
6.3 Dynamic Test Procedures
6-5
6.3.1 No Display Test 6-5
6.3.2 Input Voltage Test 6-5
6.3.3 Control Card Basic Voltage Test 6-6
6.3.4 Switch Mode Power Supply (SMPS) Test 6-6
6.3.5 Current Sensors Test CT1, CT2, CT3 6-7
6.3.6 Input Terminal Signal Tests 6-7
6.3.7 Line Power Resonance Test 6-8
6.3.8 Control Card Digital Inputs/Outputs Test 6-8
6.4 After Repair Tests
6-8
7 D-Frame Sizes Disassembly and Assembly Instructions
7-1
7.1 Electrostatic Discharge (ESD)
7-1
7.2 Passive Section (Top) Instructions
7-2
7.2.1 Control Card and Control Card Mounting Plate 7-3
Contents VLT Advanced Active Filter AAF006 D and E Frames Service Manual
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