6 Applied Functions
6 - 18
OMNUC G5-series (Pulse-train Input Type) AC Servomotors and Servo Drives User’s Manual
6-6 Brake Interlock
• This function enables you to set the output timing for the Brake Interlock Output (BKIR) signal that
activates the holding brake when the servo is turned ON, an alarm occurs, or the servo is turned OFF.
• The brake built into a Servomotor with a brake is a non-excitation brake designed only to hold the
motor in the stop status when the operation is stopped.
Accordingly, set an appropriate time so that the brake is activated after the motor stops.
• If the brake is engaged while the Servomotor is rotating, the brake disc will wear abnormally or
sustain damage, resulting in a bearing or encoder failure in the Servomotor.
6-6-1 Outline of the Function
6-6-2 Parameters Requiring Settings
Parameter
No.
Name Description Reference
Pn437 Brake Timing
When Stopped
Set the time after a servo OFF command is issued upon servo
lock stop, until the Brake Interlock Output (BKIR) signal turns
OFF and power supply stops.
P. 7 - 3 9
Pn438 Brake Timing
During Operation
Set the time after a servo OFF command is issued while the
motor rotates, until the Brake Interlock Output (BKIR) signal
turns OFF and power supply stops. If the speed drops to the
setting speed or lower in Pn439 before the time set here
elapses, BKIR will turn OFF.
P. 7 - 4 0
Pn439 Brake Release
Speed Setting
During Operation
Set the speed at which to turn OFF power to the Servomotor
when the Brake Interlock Output (BKIR) signal turns OFF after
execution of a servo OFF command while the Servomotor
rotates. If the time set in Pn438 elapses before the speed drops
to this threshold value or lower, BKIR will turn OFF.
P. 7 - 4 1
6-6-3 Precautions for Correct Use of Holding Brake
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