Toshiba TOSVERT VF-A7 User Manual

E6581172①
1
1. Introduction
Thank you for purchasing the Toshiba industrial inverter “TOSVERT VF-A7/P7”.
This manual functionally describes the light-load high-speed operation of our "TOSVERT VF-A7/P7" for
industrial use.
2. Function
This parameter provides a function of more raising the speed of motor during light load to improve the
operating efficiency of machine.
It is effectively applicable to elevators and conveyers under constant-torque loads with alternated light and
heavy loads.
3. Related parameter
List of parameters for adjusting light-load high-speed operation
Vector control
Title
Communi
cation No
Function
Adjustment
range
Min. unit (panel/
communication)
Default
setting
Write during
running
Speed
control
Torque
control
Position
control
V/f
Constant
 0330 Light-load high-speed operation 0〜10 *1 − 0 Disabled ●/●− − ●
 0331
Light-load high-speed operation
switching lower limit frequency
30.0〜 [Hz] 0.01/0.01 40.0 Enabled ●/●− − ●
 0332
Light-load high-speed operation
load waiting time
0.0〜10.0 [s] 0.1/0.1 1.0 Enabled ●/●− − ●
 0333
Light-load high-speed operation
load detection time
0.0〜10.0 [s] 0.1/0.1 1.0 Enabled ●/●− − ●
 0334
Light-load high-speed operation
heavy load detection time
0.0〜10.0 [s] 0.1/0.1 2.0 Enabled ●/●− − ●
 0335
Switching load torque current
during forward run
0〜250 [%] 1 50 Enabled ●/●− − ●
 0336
Heavy load torque during
acceleration in forward direction
0〜250 [%] 1 150 Enabled ●/●− − ●
 0337
Heavy load torque during fixed
speed in forward direction
0〜250 [%] 1 100 Enabled ●/●− − ●
 0338
Switching load torque current
during reverse run
0〜250 [%] 1 50 Enabled ●/●− − ●
 0339
Heavy load torque during
acceleration in reverse direction
0〜250 [%] 1 150 Enabled ●/●− − ●
 0340
Heavy load torque during fixed
speed in reverse direction
0〜250 [%] 1 100 Enabled ●/●− − ●
 0341
Automatic light-load high-speed
operation frequency
30.0〜 [Hz] 0.01/0.01 80.0 Enabled ●/●− − ●
 0342 Light-load detection mode *2 0〜255 1/1 0 Disabled ●/●− − ●
Sensorless vector/vector with sensor (●: Valid，−: Invalid)
*1 F330= 0: Disabled light-load high-speed operation
1: User interface (torque current)
2: Continuous automatic mode (torque current)
3: Continuous preset-speed mode (torque current)
4: Enabled-terminal effective automatic mode (torque current)
5: Enabled-terminal effective preset-speed mode (torque current)
6: User interface (torque)
*2
7: Continuous automatic mode (torque) *2
8: Continuous preset-speed mode (torque) *2
9: Enabled-terminal effective automatic mode (torque) *2
10: Enabled-terminal effective preset-speed mode (torque) *2
*2 These are not before CPU version V312.

Toshiba TOSVERT VF-A7 Specifications

General

Brand	Toshiba
Model	TOSVERT VF-A7
Category	Inverter
Language	English