Parameter database busy

What does 90 mean?

The drive's parameter database is currently occupied because both the Local Control Panel (LCP) and the RS485 communication (e.g., Modbus) are simultaneously attempting to update parameters. This prevents concurrent modifications to maintain data integrity.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Ensure that if an external master controller is used, it is programmed to not continuously write to parameters, or to coordinate access.

2. 4

   If a continuous parameter write is necessary, review the control logic to manage access to avoid conflicts.