Cause : Internal fault number 5 comes when Fault in motor parameter database. Encountering a "fault in motor parameter database" typically indicates a problem with the database that stores parameters related to the motor connected to a Variable Frequency Drive (VFD) or similar motor control system.

This database contains crucial information about the motor's characteristics, such as voltage, current, speed, torque, and efficiency, which are used by the VFD to control the motor effectively.