14. Motor Replacement Procedures77Cover CouplingBall screwCoupling on theball screw sideCoupling onthe motor sideMotor unit14.1 Removing the Motor Unit(1) Removing the coupling coverTurn off the power supply to the controller, and then disconnect the motor cable and encoder cable.Remove the two screws used to secure the cover on the motor side using an Allen wrench of 2.5 mm across flatsfor ISDB, ISPDB, ISDBCR and ISPDBCR-S, or 3 mm across flats for all other models.The coupling will be visible.Move the slider to a position where the coupling bolt can be loosened.If the actuator is equipped with a brake, connect the encoder cable and apply power to the controller to releasethe brake. Then move the slider so that the coupling bolts on the ball screw side can be removed.After moving the slider, deactivate the brake release, turn off the power to the controller and disconnect theencoder cable.Caution: x When the actuator is vertically installed, exercise due caution so that the slider does not fallwhen the brake is released. Be sure to support the slider externally to prevent it (work part)from falling.x If you attempt to move the slider with the motor cable connected, the slider movement willbecome heavy due to regenerative braking. Disconnect the motor cable before moving theslider.
