5-13
5-5 Brake Interlock
Ope
rati
n
g Func
tions
5
Operation timing during Servo ON or OFF (when Servomotor is rotating)
Regenerative energy occurs when the Servomotor is stopped on an alarm under this operation
timing.
For this reason, the operation cannot be repeated. Wait at least 10 minutes before the Servomotor
cools down.
*1. The Servo ON status will not occur until the Servomotor speed drops below approximately 30 r/min.
*2. The operation of the dynamic brake during Servo OFF depends on the Stop Selection with Servo OFF (Pn069).
*3. The Brake Interlock (BKIR) signal is output on the release request command that comes first, either from the Servo
Controller or the MECHATROLINK-II. The BKIR signal is used by assigning it to the general purpose outputs on
CN1.
In the example above, a release request was not issued from the network.
*4. t1 is either the Brake Timing during Operation (Pn06B) setting or the time for the Servomotor speed to drop below
approximately 30 r/min, whichever occurs first.
Note The Servomotor will not change to Servo ON until it stops even if the Servo ON input is turned ON while it
is decelerating.
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Approx. 2 ms
Pn06B
*1
Brake Engaged
Brake Engaged
t1*4
Servomotor
Rotation Speed
Servo ON Enabled
Approx. +30 r/min
Approx. 30 r/min
Approx. 30 r/min
Approx.
−
30 r/min
Rotation Speed A
Rotation Speed B
BKIR
Run Command (RUN)
Dynamic Brake
Relay
Servomotor
Approx. 2 ms
Approx. 40 ms
Brake Interlock
Output (BKIR)*3
Servo OFF
Servo OFF
1 to 5 ms
Servo ON
DB Engaged
DB Engaged *2
DB Released
Energized
Release Request
Release Request
Deenergized
Deenergized