Brake sequence fault

What does E.MB1 to E.MB7 mean?

These faults indicate an issue within the brake control sequence of the FR-A800/A800 Plus Series drive. This could relate to the operation of an external mechanical brake, its feedback, or the drive's internal brake control logic, preventing safe and controlled stopping.

• Mechanical brake failing to open or close within the expected timeframe.
• Brake feedback switch (e.g., brake open/close sensor) wiring error or sensor malfunction.
• Incorrect brake sequence parameters (e.g., brake open/close timing, torque levels) configured in the drive.
• External brake coil fault (e.g., open circuit, short circuit, or incorrect voltage supply).
• Load conditions exceeding the brake's capacity or causing excessive wear.

Click steps to track your progress.

1. 1

   Inspect the mechanical brake for any physical obstructions, wear, or damage, and verify its ability to open and close freely.

2. 2

   Check the wiring and functionality of any brake feedback switches or sensors connected to the FR-A800/A800 Plus Series drive.

3. 3

   Review the brake sequence parameters in the drive (refer to the detailed manual for specific brake parameters) to ensure they are appropriate for the application.

4. 4

   Measure the voltage and current supplied to the external brake coil to ensure proper operation and check for open or short circuits.

5. 5

   Verify the mechanical brake torque is sufficient for the application, and ensure the brake is not being overloaded.