External warning 3

What does A983 mean?

An external device configured as External Event 3 (parameters 31.05 and 31.06) has generated a warning. This indicates a potential issue with external equipment or sensors that should be investigated, though it may not cause an immediate drive trip. Addressing warnings proactively prevents escalation to faults.

• Approaching maintenance interval for an external component (e.g., filter blockage sensor) sending a pre-warning signal via the configured digital input (P31.05, P31.06).
• Unstable power supply (e.g., minor brownout, flickering) to an external control circuit, causing its monitoring relay to momentarily send a warning signal.
• Transient voltage spike on the digital input line from the external device, triggering the warning without a persistent underlying issue.
• Calibration drift in an external analog sensor, causing its associated digital comparator to generate a warning when the analog value is still within acceptable operating limits.

Click steps to track your progress.

1. 1

   1. Identify the specific external device or sensor connected to the digital input defined by P31.05 (External Event 3 source).

2. 2

   2. Measure the signal at the drive's input terminal referenced by P31.05 to confirm the warning state (e.g., 0VDC for active, 24VDC for inactive).

3. 3

   3. Check the external device's operational status and any local display or indicator that might provide more information on the warning condition.

4. 4

   4. Verify the configuration of P31.05 (External Event 3 source) and P31.06 (External Event 3 action) to ensure the correct input and warning action are selected.

5. 5

   5. Examine the external device's power supply for stability and proper voltage levels (e.g., 24VDC ±5%).