Toshiba TOSVERT VF-AS1 Manual

E6581333
- 1 -
1. Introduction
Thank you for purchasing a TOSVERT VF-AS1/PS1 industrial inverter.
This instruction manual explains the functions of the VF-AS1/PS1’s parameters f458 through f466.
2. Function
2-1. Control gain adjustment function (f458 to f462)
When the inverter is operated in automatic torque boost mode or vector control mode (setting of parameter
pt: 2, 3, 4, 7 or 8), the speed response can be optimized according to the inertia of the load and
vibrations can be reduced.
The settings of these parameters do not need to be changed, if no problem arises when they are at their
factory defaults.
2-2. Speed control gain switching function (f463 to f466)
*1
This function is used to change the speed response in low-speed and high-speed ranges when controlling
speed in vector control mode.
When the inverter is used with a load whose moment of inertia changes significantly according to the
operation frequency, response can be enhanced with this function.
To do so, first specify two kinds of speed control gains (proportional, stability factor and moment of inertia of
load), and then switch from one to the other using the frequency switching function (f466).
*1: This function is not provided for the VF-PS1.
3. Related parameters
Vector control
Title
Communi
cation
No.
Function
Adjustment
range
Minimum
setting unit
(Panel/
Communication)
Default
setting
Write
during
running
Speed
control
Torque
control
V/f
Constant
Note
f458
0458
Current control
proportional gain
0~100
1/1 0 Disabled ●/●●/● -
AS1
only
f460
0460
Speed loop
proportional gain
1~9999
1/1 12 Enabled ●/● --
AS1/
PS1
f461
0461
Speed loop
stabilization
coefficient
1~9999
1/1 100 Enabled ●/● --
AS1/
PS1
f462
0462
Moment of inertia
of load 1
0~100
1/1 35 Enabled ●/● --
AS1/
PS1
f463
0463
Second speed
loop proportional
gain
1~9999
1/1 12 Enabled ●/● --
AS1
only
f464
0464
Second speed
loop stabilization
coefficient
1~9999
1/1 100 Enabled ●/● --
AS1
only
f465
0465
Moment of
inertia of load 2
0~100
1/1 35 Enabled ●/● --
AS1
only
f466
0466
Speed PI
switching
frequency
0.0~
Hz
1/1 0.0 Enabled ●/● --
AS1
only
Sensorless vector/vector with sensor
●: Effective, -: Ineffective

Toshiba TOSVERT VF-AS1 Specifications

General

Brand	Toshiba
Model	TOSVERT VF-AS1
Category	Inverter
Language	English