5-14
5-5 Brake Interlock
Ope
rati
n
g Func
tions
5
Operation timing during alarms (during Servo ON)
*1. The operation of the dynamic brake during alarms depends on the Stop Selection with Servo OFF (Pn069).
*2. t1 is either the Brake Time during Operation (Pn06B) setting or the time for the Servomotor speed to drop below
approximately 30 r/min, whichever occurs first. t1 becomes 0 when an alarm occurs while the motor is stopped.
Note 1. The Servomotor will not change to Servo ON until it stops even if the Servo ON input is turned ON while
it is decelerating. The Brake Interlock (BKIR) signal is used by assigning it to the general purpose outputs
on CN1.
Note 2. The above operation timing is applied because of the Missing Phase alarm and Main Circuit Low Voltage
alarm when the power is turned OFF while the Servomotor is rotating.
Alarm
OFF
ON
0.5 to 5 ms
Approx. 2 ms
Servomotor
Dynamic Brake
Relay
Brake Interlock
Output (BKIR) *2
Normal
Alarm output
ON
OFF
Deenergized
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Energized
READY
Servo Ready
Output (READY)
Alarm Output (ALM)
Alarm
Pn06B
t1
Approx. 30 r/min
Approx. 30 r/min
BKIR
If the timing for
Pn06B comes first
If the timing to
reach 30 r/min comes first
Brake Engaged
Brake Engaged
Release Request
Release
Request
Rotation Speed A
Rotation Speed B
Brake Interlock
Output (BKIR)
DB Engaged *1
DB Released