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7 Applied Functions
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
7-6 Brake Interlock
7
7-6-3 Operation Timing
This section shows the timing of the Brake Interlock Output (BKIR).
*1. The Servo does not turn ON until the motor rotation speed drops to approximately 30 r/min or lower.
*2. The operation of the dynamic brake when the Servo is OFF depends on the set value in Stop Selection –
Disable Operation Option Code (3B20-02 hex).
*3. The Brake Interlock Output (BKIR) signal is output when a release request command is received from either
servo control or EtherCAT communications. The above example shows when there is no brake release
request from EtherCAT communications.
*4. Depends on the set value in Brake Interlock Output – Hardware Delay Time (4610-04 hex). The brake
attraction time and release time vary depending on the Servomotor brake. For details, refer to 3-2 Servomotor
Specifications on page 3-43.
*5. 2 ms or more when the External Brake Interlock Output is used.
7-6-3 Operation Timing
Basic Timing
Servo ON/OFF Operation Timing When Motor Is Stopped
ON
OFF
ON
OFF
ON
OFF
OFF ON
Servo ON/OFF
Brake Interlock
Output (BKIR)
Servo OFF
Servo ON Servo OFF
Release request
Forced-braking is possible. Forced-braking is possible.
Control power supply
(L1C, L2C)
Servo ON/OFF
ON
OFF
Dynamic
Brake
Released
Applied
Motor power supply
ON
OFF
ON
OFF
Approx. 20 ms
21 ms or more
*4*5
21 ms or more
*4*5
Approx. 80 ms
Brake Interlock
Output (BKIR)
*3
Released
Held
Attraction time Release time
Servo OFF Servo OFFServo ON
*1
DB applied
*1
DB applied
*2
DB released
Power supplyNo power supply No power supply
4610-04 hex
Release request
Holding brake
operation
Brake released
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