Brake motors are made with the application of an electromagnetic disc-brake onto an A.C. motor which operates in case of lack of current causing the blocking of the motor and of the other devices connected to it.The brake motor grants a high stop precision in case of voluntary interruption of current; it grants also a high safety margin should the interruption be accidental. Braking pressure is effected in a very fast way from one or more springs once the electromagnet stops its action.
The principal characteristics can be summed up as follows:
- double extended shaft;
- possibility of brake separate feeding. This solution is advisable on two speed motors and when an inverter is used.