ALLIED TELESIS AT-210T Channel contact module

The holding brake is an electromagnetic spring-pressure brake which holds the motor shaft in position when there is no current to the motor (e.g. in the event of a power failure or emergency stop). This holding function is needed for applications in which weight on the shaft can cause excessive torque, e.g. the Z axes of handling equipment.For the brake to work reliably on Z axes with a holding brake the static load torque must not exceed 25% of the motor’s holding torque.

Drive circuit 

The drive circuit must be electrically excited in order to disengage the brake. To prevent overheating, the excitation current should be reduced as soon as the brake is disengaged. The recommended circuit arrangement is shown in the following diagram.The following tables show available combinations of motor and gearbox. Refer to gearbox datasheet for further information.

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