DC charge warning

What does A885 mean?

This is a programmable warning related to the DC charging circuit of the drive. It is typically triggered by a timer or counter indicating an anomaly or exceeding a threshold during the DC bus pre-charge sequence.

• A programmable timer or counter monitoring the DC charging process has reached a threshold or detected an anomaly.
• Slow or inconsistent DC bus pre-charging.
• Potential issue with pre-charge resistors or contactors.

Click steps to track your progress.

1. 1

   Check the event log for an auxiliary code or specific counter/timer responsible for this warning.

2. 2

   Review parameters related to DC bus charging supervision and thresholds.

3. 3

   Verify the incoming AC supply voltage is within specifications for the drive, ensuring adequate power for pre-charge.

4. 4

   Inspect DC bus pre-charge resistors and contactors for proper operation, damage, or degradation.

5. 5

   Ensure the pre-charge sequence completes within the expected timeframe.