Hitachi L100 Series Instruction Manual page 85

3–14
"A" Group: Standard Functions
Voltage Gain – Using parameter A_45 you
can modify the voltage gain of the inverter (see
graph at right). This is specified as a percent-
age of the full scale setting (Automatic Voltage
Regulation) AVR level in parameter F_03. The
gain can be set from 50% to 100%. It should be
adjusted in accordance with the motor specifi-
cations.
The following table shows the methods of
torque control selection.
Func. Name /
Code SRW Display
A_41 Torque boost method
selection
V-Boost
A_42 Manual torque boost
value
V-Boost
A_43 Manual torque boost
frequency adjustment
V-Boost
A_44 V/f characteristic curve
selection
CONTROL
A_45 V/f gain setting
V-Gain
"A" Function
Description
Two options:
00 ...Manual torque boost
01 ...Automatic torque boost
Mode 0
Can boost starting torque
between 0 and 99% above
normal V/f curve, from 0 to
code 11
1/2 base frequency
Sets the frequency of the V/f
breakpoint A in graph (top of
previous page) for torque boost
F 10.0%
Two available V/f curves;
three select codes:
00 ...Constant torque
SLV
01 ...Reduced torque
Sets voltage gain of the inverter
from 50 to 100%
100%
Voltage Gain
V
100%
50%
0
Defaults
Run
Mode
–FE –FU
Edit
(CE) (UL)
✘
00 00
✔
11 11
✔
10.0 10.0
✘
00 00
✔
100 100
A 45
Hz
–FR
Units
(Jpn)
00 —
11 —
10.0 %
00 —
100 %