Toshiba VF-AS1 instruction manual Torque is h eld at a limit level even, Torque limit level

E6581301

Frequency [Hz]		Operation frequency
	If the torque limit function
	is not activated

Actual speed

Time [s]

Torque [N·m] Torque limit level

ON

Mechanical brake

OFF

Time [s]

(released)

Time [s]

(2)￿￿￿￿=￿(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 when it decreases as a result of the release of the mechanical brake. The use of this function prevents the load from failing and improves the motor’s response during inching operation.

6 Frequency [Hz]

	Operation frequency
					Actual speed
					(Acceleration rates vary depending
					on the torque limit level.)
					Time [s]
Torque [N·m]
				Torque is held at a limit level even
Torque limit level				after the mechanical brake is released.
	ON				Time [s]
Mechanical brake			OFF
		(released)
					Time [s]

F-48