Trane TR150 - Page 3

4.3 Fault Symptom Troubleshooting
27
4.4 Visual Inspection
28
4.5 Fault Symptoms
30
4.5.1 No Display
30
4.5.2 Intermittent Display 30
4.5.3 Display (Line 2) Flashing 30
4.5.4 WRONG or WRONG LCP Shown
30
4.5.5 Motor Will Not Run 30
4.5.6 Incorrect Motor Operation 31
4.6 Warnings and Alarms
32
4.6.1 Alarms 32
4.6.2 Warnings 32
4.6.3 Warning And Alarm Messages
32
4.7 After Repair Tests
38
5 Frequency Converter and Motor Applications
39
5.1 Torque Limit, Current Limit, and Unstable Motor Operation
39
5.1.1 Overvoltage Trips 39
5.1.2 Mains Phase Loss Trips 40
5.1.3 Control Logic Problems 40
5.1.4 Programming Problems 40
5.1.5 Motor/Load Problems 41
5.2 Internal Frequency Converter Problems
41
5.2.1 Overtemperature Faults 41
5.2.2 Current Sensor Faults 41
5.2.3 Signal and Power Wiring Considerations for Electromagnetic Compatibility 41
5.2.4 Eects of EMI 42
5.2.5 Sources of EMI 42
5.2.6 EMI Propagation 43
5.2.7 Preventive Measures 44
6 Test Procedures
45
6.1 Non-repairable Units
45
6.2 Introduction
47
6.3 Static Test Procedures
47
6.3.2 Rectier Circuit Test 48
6.3.3 Inverter Section Tests 48
6.3.4 Intermediate Section Tests 49
6.3.5 Location of UDC Terminals 49
6.4 Dynamic Test Procedures
52
6.4.1 No Display Test (Display is Optional) 52
Contents
2 02/2017 All rights reserved. BAS-SVM04B-EN