6-22
6-6 Brake Interlock
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
6
Applied Functions
Operation Timings when Alarm Generates (Servo ON)
*1. The dynamic brake operation when an alarm generates depends on Stop Selection with Servo OFF (Pn506).
*2. “t1” is either the time set for the Brake Timing During Operation (Pn438), or the time needed for the motor speed to
drop to speed set in Brake Release Speed Setting (Pn439) or below, whichever comes first.
Note 1.Even when the servo ON input is turned ON again while the motor is decelerating, the system does not enter
the servo ON state until the motor stops. The BKIR signal is assigned to the general-purpose output (CN1).
Note 2.If the main circuit power supply turns OFF while the motor is operating, a phase loss alarm or main circuit voltage
low alarm will occur, in which case this operation timing will be applied.
Alarm generation
OFF
ON
0.5 to 5 ms
Motor power supply
Dynamic brake
Brake interlock
output (BKIR)
*2
Brake interlock
output (BKIR)
*2
Normal
Alarm output
ON
OFF
Power supply
Released
Engaged
ON
OFF
ON
OFF
ON
OFF
Release request
No power supply
DB Released DB engaged*1
READY
Servo ready
output (READY)
Alarm output (ALM)
Alarm
Brake held
Pn438
When the Pn438
setting is early
t1
Release request
Brake held
Pn439 set value
Pn439 set value
Rotation speed A
Rotation speed B
BKIR
When the timing of
reaching the Pn439 set
value or lower is early
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