Omron OMNUC G5 R88M-K series User Manual page 244

6-5 Brake Interlock
Servo ON/OFF Operation Timings When Motor Is Rotating
Based on these operation timings, regenerative energy is produced if the motor rotation stops
abnormally.
Accordingly, repeated operations cannot be performed. Provide a wait time of at least 10
minutes for the motor to cool down.
Operation command (RUN)
Dynamic brake relay
Motor power supply
Brake release request
from servo control
6
Motor rotation speed
*1. The servo does not turn ON until the motor rotation speed drops to approx. 30 r/min or below. If a Servo-ON is
commanded during motor rotation, the Command warning (Warning No. 95) occurs. The Servo-ON command is
ignored.
*2. The dynamic brake operation when the servo is OFF depends on Stop Selection with Servo OFF (Pn506).
*3. The Brake Interlock output (BKIR) signal is output when the OR condition is met by a release request command from
the Servo control and from the MECHATROLINK-II. In the above example, the MECHATROLINK-II makes no
release request. The BKIR signal is assigned to the general-purpose output (CN1).
*4. The mark t1 refers to the period until the value becomes lower than the set value on the Brake Timing during
Operation (Pn438) or the Brake Release Speed Setting (Pn439), whichever is shorter.
Note: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.
6-15
ON
Servo OFF
OFF
ON
DB engaged
OFF
ON
No power supply
OFF
ON
*3
OFF
Servo ON enabled
Approx. −30 r/min
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
*1
Servo ON
*1
DB released
Approx. 60 ms
Power supply
Approx. 4 ms
Brake held Release request
When the Pn438
Approx. +30 r/min
setting is early
Value set on Pn439
When the Pn439
setting is early
BKIR
Value set on Pn439
Servo OFF
1 to 5 ms
*2
DB engaged
*2
No power supply
*4
t1
Pn438
Brake held
*4
t1
Pn439
Release request Brake held