MCD 200 Series
MG.17.D3.02 – VLT is a registered Danfoss trademark
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Warnings
........................................................... 2
Section 1.0
Spare Parts
1.1 Main Control PCB ........................................... 3
1.2 Interface PCB ................................................... 4
1.3 SCRs ............................................................... 6
1.4 Bypass Contactors .......................................... 9
1.5 Current Transformers .................................... 11
1.6 Bypass Relay Kit .............................................. 11
1.7 Plastics Kit........................................................ 12
1.8
Plastic Door...................................................... 13
Section 2.0
Tests
2.1 MCD 201 Start Performance Test.................... 15
2.2 MCD 202 Start Performance Test.................... 16
2.3 Run Performance Test..................................... 16
2.4 Power Circuit Test ........................................... 18
2.5 Control Input Test............................................ 19
2.6 Power Voltage Supply Test.............................. 20
Section 3.0
Component Replacement Procedures
3.1 Disassembly Sequence 007~030 .................. 21
3.2 Exploded View MCD 201-007 ~ 030 ............. 22
3.3 Exploded View MCD 202-007 ~ 030 ............. 23
3.4 Disassembly Sequence 037~055 .................. 24
3.5 Exploded View MCD 201-037 ~ 055 ............. 25
3.6 Exploded View MCD 202-037 ~ 055 ............. 26
3.7 Disassembly Sequence 075~110 .................. 27
3.8 Exploded View MCD 201-075 ~ 110 ............. 28
3.9 Exploded View MCD 202-075 ~ 110 .............. 29
Section 4.0
Appendix
4.1 Typical Causes of SCR Damage...................... 30
4.2
Output
Relay
Compatibility .............................. 31
4.3 Control Input Failure ........................................ 32
