7-17
7 Applied Functions
G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
7-5 Brake Interlock
7
7-5-2 Operation Timing
*1 The servo does not turn ON until the motor rotation speed drops to approx. 30 r/min or below.
*2 The operation of the dynamic brake when the servo is OFF depends on the setting of the Disable operation option code
(605C hex).
*3 The Brake Interlock Output (BKIR) signal is output either when a release request command is received via Servo controls
or when a release request command is received via EtherCAT communications. The above example shows when there is
no brake release request from EtherCAT communications. The BKIR is assigned to the general-purpose output (CN1).
Note The brake application time and release time vary depending on the Servomotor brake. For details, refer to 3-3
Servomotor Specifications on page 3-36.
Servo ON/OFF Operation Timing When Motor Is Stopped
Servo ON/OFF
N
OFF
Dynamic brake
Released
Engaged
Motor power supply
ON
OFF
ON
OFF
Approx. 2 ms
Approx. 4 ms 1 to 6 ms
Approx. 60 ms
Brake interlock
output (BKIR)
*3
Released
Held
Attraction time
Release time
Servo OFF Servo OFFServo ON
*1
DB engaged
*1
DB engaged
*2
DB released
Power supplyNo power supply
No power supply
3437 hex
Release request
Holding brake operation
Brake released