Motor Holding Brake Connection

A 24V holding brake in the motor can be controlled directly by the servo drive. For proper function, check voltage drop, measure voltage at brake input and check brake function (on and off).

The brake is powered by the 24V auxiliary supply on X10. Minimum and maximum brake current see Electrical Data Brake output.

No functional safety!

Serious injury could result when the load is not properly blocked. The internal brake function does not ensure functional safety.

  • The Hardware Enable does not initiate a controlled stop but switches off the power stage immediately.
  • Set parameter AXISx.MOTOR.BRAKEIMM to 1 with vertical axes, to apply the brake immediately after faults or Hardware Disable.

Pinout for motor brake X1

Pin

 Signal Description

B+

BR+

Brake positive line

B-

BR-

Brake negative line

Wiring

Usually the brake line is part of the Kollmorgen cable connection to X1 Motor Cable Connection.

Functionality

The brake function must be enabled through a parameter. The diagram below shows the timing and functional relationships between the controlled stop signal, speed, and braking force. All values can be adjusted with parameters; values in the diagram are default values.

The servo drive speed setpoint is internally driven down an adjustable ramp (AXISx.CS.DEC) to 0 V.

With default values the output for the brake is switched on when the speed has reached 5 rpm (AXISx.ZEROV) for at least 6 ms (AXISx.ZEROT). The rise (tbrH) and fall (tbrL) times of the holding brake that is built into the motor are different for the various types of motor.