IndustrialDriveDataDrive Board & Diagnostic Database
Thermal evidence record

Danfoss VLT Cooling and Heatsink Evidence Record

Supports alarm 29 diagnosis by collecting fan, heatsink, cabinet airflow, load current and ambient evidence before board replacement.

Record status

IdentifierFamily-level thermal/cooling record pending exact frame and fan assembly identification
Record typeThermal evidence record

Observed functional elements

Cooling fanHeatsink finsFilter / ductCabinet ventilationTemperature sensor pathLoad current

Diagnostic use

  • Distinguish real overheating from sensor/feedback problem
  • Preserve maintenance evidence
  • Support fan or cooling-path replacement decision

Linked circuit records

Circuit
Danfoss VLT Cooling and Heatsink Temperature Path

Routes alarm 29 through cooling fans, heatsink contamination, airflow, cabinet ventilation, ambient temperature, load current and temperature feedback.

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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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