IndustrialDriveDataDrive Board & Diagnostic Database
Initial records published

LS Electric / LG Industrial Systems industrial drive records

Diagnostic and board-level reference records for legacy LG / LS Starvert AC drives, beginning with the iS5 family and the SV185iS5-4N0 switching-power-supply failure route that can destroy repaired CPU electronics.

Coverage focus

Legacy AC drives / VFD switching-power-supply and board repair

Diagnostic and board-level reference records for legacy LG / LS Starvert AC drives, beginning with the iS5 family and the SV185iS5-4N0 switching-power-supply failure route that can destroy repaired CPU electronics.

Available series

Series
Starvert iS5

Starvert iS5 coverage connects the LS/LG product family and fault-history framework with a documented SV185iS5-4N0 control-power failure: IGBT damage followed by repeat CPU-board damage when an unstable 24 V supply rose to approximately 56 V.

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Evidence intake

Turn this record into a qualified service request

A repair decision is much more reliable when the request includes the exact identity of the drive, the first fault evidence and the machine condition when the symptom appeared.

  • Complete drive type code / MLFB or nameplate model
  • Fault code, fault value and first event before reset
  • When the event appears: power-up, enable, ramp, run, decel or stop
  • Motor/cable connected or isolated during the symptom
  • Visible board, option-card, module and connector identifiers
  • Previous repair history, replacement parts and repeat-failure pattern
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