Current Control Circuit Malfunction (ECM)
Fanuc · Macro B CNC Programming
What does b mean?
The circuit responsible for controlling the current of the Energy Charge Module (ECM) has malfunctioned. This is a critical internal fault within the ECM Control Module (A06B-6158-H010), affecting its ability to manage charge and discharge currents, leading to unstable operation.
Repair Steps
- 1
Immediately stop the machine using the emergency stop button and open the external Main Circuit Contactor (MCC) of the Power supply.
- 2
Inspect the ECM Control Module (A06B-6158-H010) for any visible signs of damage, such as burnt components, discolored areas, or loose internal connections.
- 3
Check the input power supply to the ECM Control Module for stability and correct voltage levels.
- 4
Verify that all internal connections and wiring within the ECM Control Module, particularly those related to current sensing and control, are secure.
- 5
If no external factors or loose connections are identified, the ECM Control Module (A06B-6158-H010) is likely faulty and requires replacement.