Resistor Module Abnormal Discharge (1) (ECM)

What does F mean?

The Energy Charge Module's (ECM) Capacitor Modules are not discharging as expected, possibly due to a fault in the Resistor Module (A06B-6158-H030) or its control circuit. This indicates a failure in the controlled release of stored energy, which could lead to overvoltage.

• Resistor module (ECM) failure to discharge within expected timeframes.
• Faulty discharge resistor element in the ECM.
• Control signal issue for the discharge circuit (ECM).
• Overload condition preventing proper discharge of the resistor module.

Click steps to track your progress.

1. 1

   Immediately stop the machine using the emergency stop button and open the external Main Circuit Contactor (MCC) of the Power supply.

2. 2

   Check the Resistor Module (A06B-6158-H030) for any visible damage, signs of overheating, or a blown fuse. Its expected resistance is 30 ohm (page 578).

3. 3

   Inspect the wiring of the discharge circuit between the ECM Control Module (A06B-6158-H010) and the Resistor Module for breaks or loose connections.

4. 4

   Verify the control signals that initiate discharge to the Resistor Module, ensuring they are correctly issued by the Control Module.

5. 5

   If the alarm persists, the Resistor Module may be faulty and require replacement.