Holding brake [+]

A holding brake blocks the rotor and the spindle nut in the de-energized state. If the integrated anti-twist protection [+] option has been ordered or an external anti-twist device is available, the entire spindle drive is blocked. The holding brake increases the motor moment of inertia.

If no anti-twist protection is installed – either as an option or as an external attachment – the spindle can be extended or retracted by manual rotation if the holding brake blocks the rotor. This means that the encoder cannot detect the current spindle position and homing must be performed before restarting.

Further information can be found in chapter Commissioning.