User guide

53
Power Wiring, continued
Servo Motor
Holding-Brake
Control
Functional
Description
A 24V holding brake in the servo motor is controlled directly by the 17D drive
through software-selectable BRAKE parameter settings. The time and functional
relationships between the ENABLE signal, speed setpoint, speed and braking force
are shown in the following diagram.
.
During the fixed ENABLE delay time of 100 ms, the speed setpoint of the drive is
internally driven down a 10 ms ramp to 0 V. The 3 % region of actual speed is
scaled to V
LIM
.
Note: The set and release times of the holding brake vary with the servo motor and
thus must be considered when setting parameters.
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