Toshiba VF-S15 Instruction Manual page 205

(2) f451=1(In sync with min. time)
The operation frequency keeps increasing, even if the torque limit function is activated.
In this control mode, the actual speed is kept in sync with the operation frequency, while torque is held at a limit
level in spite of torque decrease when releasing the mechanical brake. The use of this function prevents the load
from failing and improves the motor's response during inching operation.
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Frequency [Hz]
If the torque limit function
is not activated
Torque [N·m]
Torque limit level
ON
Mechanical brake
Frequency [Hz]
Operation frequency
Torque [N·m]
Torque limit level
ON
Mechanical brake
Operation frequency
OFF
(released)
Actual speed
(Acceleration rates vary depending
on the torque limit level.)
Torque is held at a limit level even
after the mechanical brake is released.
OFF
(released)
F-93
E6581611
Actual speed
Time [s]
Time [s]
Time [s]
Time [s]
Time [s]
Time [s]
6