Device unknown

What does 40 mean?

An unknown or unrecognized power unit or option board has been connected to the drive. This indicates an incompatible hardware component that the drive cannot identify or operate with. The drive will be unable to start or function properly until a compatible device is installed.

• Installation of an option board that is not compatible with the specific drive series or firmware version.
• Hardware revision mismatch between the installed option board and the drive's operating system.
• Damage to the option board's identification chip or internal firmware, preventing proper recognition.
• Slot error where the drive cannot properly read the identification data from the installed board.

Click steps to track your progress.

1. 1

   Power down the drive completely and verify zero voltage on DC bus terminals.

2. 2

   Identify the recently installed option board or power unit.

3. 3

   Remove the suspected incompatible device from its slot.

4. 4

   Verify the part number and compatibility of the removed device against the drive's technical specifications (e.g., drive manual page 15).

5. 5

   Install a compatible option board or power unit, ensuring correct seating in its designated slot.

6. 6

   Power up the drive and confirm the fault clears.