Main contactor warning

What does A884 mean?

This is a programmable warning related to the main contactor operation. It is typically triggered by a counter or timer exceeding a set threshold for contactor operations or on-time.

• A programmable counter or timer monitoring the main contactor has reached its configured warning threshold for operations or on-time.
• Frequent switching of the main contactor due to process demands or control logic.
• Incorrectly set warning threshold for main contactor monitoring parameters.

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 main contactor monitoring (e.g., operating cycles, on-time) and their thresholds.

3. 3

   Inspect the main contactor for signs of wear, degradation, or incorrect mechanical operation.

4. 4

   Verify the control signals and feedback from the main contactor are accurate and consistent.

5. 5

   If the warning indicates excessive operation, identify and correct the cause of frequent contactor switching, then reset the counter/timer.