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Machinery spare parts supplier for Liugong, LGMG, SDLG, Lonking, XGMA, Dingli, Sinoboom, Sunward, Hangcha, Heli, Shantui, Lonking, Caterpillar, John Deere, Terex, JLG, Oshkosh, Manitowoc, Astec Industries, Komatsu, Hitachi, Kubota, Kobelco, Sumitomo, Tadano, Takeuchi, Yanmar, Liebherr, Wacker Neuson, Bauer, Sennebogen
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Repair Cases

Favelle Favco M760 Derrick Crane Inverter DC Bus Overvoltage

Fault Phenomenon: Favco M760 derrick crane during rapid lowering of heavy loads, the inverter reports DC bus overvoltage fault and stops.

Troubleshooting Process:
– Checked braking resistor: resistor value infinite (open circuit).
– Checked braking chopper: IGBT shorted.
– Checked cooling fan: fan stopped.
– Replaced braking resistor set and braking chopper module.

Root Cause: The braking resistor was open circuit and the chopper failed, preventing regenerative energy from being dissipated.

Required Parts: Braking resistor set, braking chopper module.

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Machinery spare parts supplier for Liugong, LGMG, SDLG, Lonking, XGMA, Dingli, Sinoboom, Sunward, Hangcha, Heli, Shantui, Lonking, Caterpillar, John Deere, Terex, JLG, Oshkosh, Manitowoc, Astec Industries, Komatsu, Hitachi, Kubota, Kobelco, Sumitomo, Tadano, Takeuchi, Yanmar, Liebherr, Wacker Neuson, Bauer, Sennebogen
Go to AI Smart Store
Machinery spare parts supplier for Liugong, LGMG, SDLG, Lonking, XGMA, Dingli, Sinoboom, Sunward, Hangcha, Heli, Shantui, Lonking, Caterpillar, John Deere, Terex, JLG, Oshkosh, Manitowoc, Astec Industries, Komatsu, Hitachi, Kubota, Kobelco, Sumitomo, Tadano, Takeuchi, Yanmar, Liebherr, Wacker Neuson, Bauer, Sennebogen
Go to AI Smart Store