Denial of parameter change

What does F01659 mean?

This fault occurs when the drive rejects a write request for one or more safety parameters, often due to problems finalizing parameters, an incorrect safety password, or an insufficient tolerance setting (p9691/p9891 too small). The drive may revert to previous settings, indicating an issue with security or parameter validation within the safety configuration.

• Attempted modification of safety parameters (e.g., P9500-P9503 range) without the correct safety password (e.g., P9900) or authorization level.
• The safety function is active or in a state (e.g., running, locked) that currently prevents parameter changes.
• Checksum inconsistency detected during parameter write, indicating a conflict with the drive's current safety state.
• A timeout occurred during the internal write process of safety-relevant parameters, preventing successful storage.
• An insufficient tolerance setting (e.g., P9510) preventing a parameter change from being accepted due to a value conflict.

Click steps to track your progress.

1. 1

   1. Enter the correct safety password (e.g., P9900) and ensure the drive is in a safe commissioning state (e.g., P9500=0 or appropriate mode).

2. 2

   2. Verify the drive's operational mode (e.g., r0002) is not preventing parameter writes; typically, the drive must be stopped.

3. 3

   3. Attempt to write the parameter again, ensuring no other communication or safety functions are active simultaneously.

4. 4

   4. Check for other active safety faults (e.g., F01650, F01651) that might be blocking parameter modifications.

5. 5

   5. Perform a safety function acknowledgment (e.g., via P1002) if required, and then attempt the parameter change again.