Cause : Hybrid error comes when the driver of the full-closed version is under the full-closed and hybrid control with an external encoder, the load position detected by the external encoder and the motor position detected by the motor encoder are beyond the limit specified by Pr73 (hybrid error limit).

"alarm 25" in panasonic servo drive indicate "Hybrid error". This means a malfunction in the hybrid control system. Hybrid control typically refers to a system that combines different control methods, such as position, speed, and torque control, to optimize performance.

1. Check the connection between the motor and load.
2. Check the connection between the external encoder and driver.
3. Correct the values of the external scale numerator and denominator regarding parameters Pr74, Pr75, Pr 76 and Pr77.
4. Increase the value of Pr73. Increase the value of Pr71 (hybrid switching time).