Danfoss MCD 500 Series User Manual

MCD 500 PCB Replacement - Instructions MCD500 PCB Replacement
MI.17.F1.02 - VLT
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is a registered Danfoss trademark Page 2/5
2. Models MCD5-0131B ~ MCD5-0215B
Remove the top cover and terminal blocks from
the starter. Undo the 4 x Torx screws holding the
top plastic.
Tilt the top plastic to the right to expose the wiring
looms. Label each SCR firing loom with the number
of the corresponding phase terminal on the main
control PCB, then unplug the looms.
Unplug the thermistor, fan and CT wires from the
main control PCB.
Undo the 4 x Torx screws from the model PCB
support bracket and set aside.
Remove 4 x Torx screws from the bypass driver
PCB, slide out to the right and set aside.
Remove 7 x Torx screws from the main control PCB
and set aside.
Replace the PCBs, plug in the looms, top plastic,
top cover and terminal plugs.

Danfoss MCD 500 Series Specifications

General

Protection Class	IP20
Control Supply Voltage Us	24 V DC
Frequency	50/60 Hz
Relative Humidity	5% to 95% (non-condensing)
Altitude	Up to 1000 m without derating
Voltage Range	200-690 V
Operating Temperature	-10 - 50 °C
Communication Protocols	Modbus RTU, Profibus
Approvals	CE, UL, cUL
Features	Built-in Bypass
Storage Temperature	-40°C to 70°C