Toshiba TOSVERT VF-A7 Function Manual

E6581169
- 4 -
5. Function of parameter H
H = 0.0 mode (power running without continual stall prevention trip)
H = except 0.0 (power running with continual stall prevention trip)
If stall prevention trip
continually takes place in
lifting operation with overload
(power running), output
frequency is automatically
lowered in order to control the
current. If worst comes to
worst, the load falls because
of a stall.
If stall prevention trip
continually takes place in
lifting operation (power
running) (in the continuos
hours set byH),QV
(overtorque) prevention trip
takes place to prevent the
load from falling caused by
overload.
Frequency [Hz]
Time [s]
Time [s]
Stall prevention
trip level
When stall prevention
is not activated
Operation
frequency
In stall prevention trip
Output current [%]
Falling direction in winding
up operation of lifting
machines.
When the inverter is used in combination with a lifting machine (crane, hoist, etc.), this function
prevents the load from falling because of a stall in overload hoisting (power running).
Frequency [Hz]
Time [s]
Time [s]
Stall prevention
trip level
When stall prevention
is not activated
Operation frequency
H
Output current [%]
QV (overtorque) prevention
trip resulting from continual
stall prevention trip in the set
hours.

Toshiba TOSVERT VF-A7 Specifications

General

Brand	Toshiba
Model	TOSVERT VF-A7
Category	Inverter
Language	English