Omron OMNUC G5 R88M-K series User Manual page 245

Operation Timings when Alarm Generates (Servo ON)
Alarm generation
Motor power supply
Dynamic brake relay
Servo ready
output (READY)
Alarm output (ALM)
When the Pn438
setting is early Motor rotation speed A
Value set on Pn439
Brake interlock
*2
output (BKIR)
If the timing when
the values goes below
Motor rotation speed B
the Pn439 setting
comes earlier
Value set on Pn439
Brake interlock
*2
output (BKIR)
*1. Dynamic brake operation at an alarm depends on the Stop Selection for Alarm Detection (Pn510) setting.
*2. 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).
*3. 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 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.
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 occurs, in which case this operation timing is applied.
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
OFF
Normal
Alarm output
ON
0.5 to 5 ms
ON
Power supply No power supply
OFF
ON
DB Released DB engaged
OFF
ON
READY
OFF
ON
Alarm
OFF
*3
t1
ON
Release request
OFF
*3
t1
BKIR
Release request
*1
Pn438
Brake held
Pn439
Brake held
6-5 Brake Interlock
6-16
6