Contents
1 Warnings
3
2 Troubleshooting
5
Functional Tests
5
Power Circuit Test
5
Start Performance Test
5
Run Performance Test
6
Trip Messages
6
General Faults
10
3 Service Instructions
13
Frame Sizes
13
MCD5-0021B - MCD5-0053B (G1B)
14
MCD5-0068B - MCD5-0105B (G1B)
15
MCD5-0131B - MCD5-0215B (G2B)
16
MCD5-0245C (G3C)
17
MCD5-0360C - MCD5-0927C (G4C)
18
MCD5-1200C - MCD5-1600C (G5C)
19
4 Spare Parts
21
Spare Parts
21
Main Control PCB
21
Model PCB
22
Backplane PCB
23
Bypass Driver PCB
24
SCRs and Power Assemblies
25
Fans
26
Current Transformers
27
Bypass Contactors
28
Plastics
29
Complete plastics
30
Bus Bars
31
Other Spare Parts
33
5 Avoiding Damage
35
SCRs
35
Typical Causes of SCR Damage
35
Protecting SCRs
35
Semiconductor Fuses
35
Main Contactors
35
Output Relays
35
MCD 500 Service Manual
Contents
MG.17.L1.02 - VLT
®
is a registered Danfoss trademark
1
