How to handle ACS510 inverter operation report 16 (ground fault)

Related Tools

• Digital Multimeter
• Analog Mechanical Watch
• Phillips Screwdriver
• Hexagon Socket Screwdriver
• Three-phase 380V AC Power Supply
• 380V Three-phase Asynchronous Motor

Method/Steps

1. Connecting the Inverter:
   • Connect the three-phase power supply and the three-phase motor to the inverter.
   • Upon powering on, if a fault code 16 (ground fault) appears and cannot be reset, possible causes include a damaged power board or module.
   • Remove the module to check if the inverter reports fault code 18 (sensor failure), which can be temporarily shielded.
   • After shielding, recheck if the inverter still reports fault code 16. If it does, the module is likely intact, and the issue lies with the power board.
   • Alternatively, inspect the module for any obvious burn marks, as their absence usually indicates good condition.
   • Use the analog mechanical watch to trigger the IGBT firing angle and observe module conduction to assess the IGBT's health.
2. Fault Code 16 During Operation:
   • If fault code 16 does not appear upon initial power-on but emerges once the panel is running, this typically indicates a faulty module.
   • Replace the module and inspect the drive circuit for any irregularities.
3. Possible Motherboard Issue:
   • In both aforementioned scenarios, another potential issue could be a faulty motherboard.
   • While this situation is rare, it is not unheard of.
   • Always prioritize testing with a known good motherboard to rule out this possibility.

Precautions

• Exercise caution when powering on equipment, especially when measuring line voltages.
• Take detailed notes to facilitate future troubleshooting.