Cause : External fault comes when external fault at multi-function input terminal or faults comes from external control circuit.

"Err15" fault in inovance MD290 drive indicate "External fault". This means a problem that is not directly related to the drive itself but rather an external issue triggering the fault condition.

Common Causes:

1. Wiring Issues:

   • Loose or damaged cables connecting the drive to external devices can cause faults.
   • Check for short circuits, ground faults, or disconnected wires.

2. External Equipment Faults:

   • Faults from connected motors, sensors, or other devices can trigger an external fault in the drive.
   • Inspect the external devices connected to the drive.

3. Improper Configuration:

   • Incorrect parameter settings in the drive may cause the system to interpret external signals as faults.
   • Verify that all parameters related to external fault inputs are correctly configured.

4. Noise Interference:

   • Electrical noise from nearby equipment can cause false triggering of external fault conditions.
   • Ensure proper grounding and shielding of cables and consider using filters if necessary.

5. Faulty External Components:

   • Faulty external devices, such as relays, switches, or sensors, can send incorrect signals to the drive.
   • Test the components to ensure they are functioning correctly.

Troubleshooting Steps:

1. Check the Fault Log:

   • Review the fault history on the drive’s display or software to identify the specific external fault that occurred.

2. Inspect External Wiring:

   • Check all connections between the drive and external devices for any loose or damaged wires.

3. Test External Devices:

   • Temporarily disconnect external devices to see if the fault clears. This can help isolate the faulty component.

4. Review Drive Parameters:

   • Ensure that parameters related to external fault inputs are set correctly according to the system's requirements.

5. Reduce Electrical Noise:

   • If noise interference is suspected, ensure that all cables are properly shielded and grounded. Consider using noise filters if necessary.