Over-voltage of Capacitor Module (ECM)

What does 7 mean?

An over-voltage condition has occurred in the Energy Charge Module's Capacitor Modules. This implies the capacitor bank is being charged beyond its rated voltage, potentially due to a fault in the charging control circuit, an issue with the Resistor Module, or an external over-voltage condition.

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

   Measure the voltage across the Capacitor Modules (A06B-6158-H020) to confirm the over-voltage condition.

3. 3

   Inspect the charging control circuit of the ECM (Control Module A06B-6158-H010) for proper regulation of the charging voltage.

4. 4

   Verify the functionality of the Resistor Module (A06B-6158-H030), ensuring it can effectively discharge the Capacitor Modules at Emergency Stop or Alarm (page 578).

5. 5

   Check the main power supply and any connected regenerative units for conditions that could lead to excessive voltage accumulation in the Capacitor Modules.