Cause : SYNCRO SPEED comes when value of motor nominal speed set to parameter 99.08 is not correct: Value is too near synchronous speed of motor. Tolerance is 0.1%. This warning is active only in DTC mode.

The code FF87 in your ABB ACS800 drive indicates a warning related to the synchronous motor speed. This warning signifies that the motor's actual speed is too close to its synchronous speed.

• Check nominal speed from motor rating plate and set parameter 99.08 exactly accordingly.