Brake Sequence Function - Toshiba TOSVERT VF-S15 Instruction Manual

4.4 Brake sequence function

The brake sequence function is to ensure smooth operation with the motor by producing enough torque
before the brake is released.
 Starting procedure
After the run command is ON, the motor produce the torque set with f343. The brake release
request signal is put out through the brake output terminal at the same time the torque is
generated. After the brake release time set with f345 elapsed, the motor starts to accelerate.
 Stopping procedure
After the run command is OFF, the operation frequency is decreased to the creep frequency set
with parameter f346, and delays the braking request for the creep time 1 set with f340 to
minimize swing of the load. And then, the creep frequency is maintained for the creep time set
with f347before the inverter stops.
Output frequency
Torque control
(Hz)
Starting frequency

Torque 
Braking signal
Braking operation
RUN command
Speed control
Issue of torque command
Brake release request

１８

Braking request


E6581871
Creeping frequency

Time (s)