AKD Installation | 8 Electrical Installation
8.10.2 Motor Holding Brake (X2)
A 24 V holding brake in the motor can be controlled directly by the drive. The brake only
works with sufficient 24 V voltage level (➜ p. 34 or ➜ p. 35). Check voltage drop, measure
the voltage at brake input and check brake function (brake and no brake).
This function does not ensure functional safety. Functional safety requires
and additional, external mechanical brake, operated by a safety con-
troller. The Hardware Enable (connector X8 pin4) does not initiate a con-
trolled stop but switches off the power stage immediately.
Set parameter MOTOR.BRAKEIMM to 1 with vertical axes, to apply the
brake immediately after faults or Hardware Disable.
The brake function must be enabled through a parameter. The diagram below shows the tim-
ing and functional relationships between the controlled stop signal, speed setpoint, speed,
and braking force. All values can be adjusted with parameters; values in the diagram are
default values.
102 Kollmorgen™ | May 2013
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