3−25
load is given to the motor automatic torque boost, step by step
Motor speed increases when a load is
given to the motor
Decrease the slip compensation gain for
automatic torque boost, step by step
A047 / A247
The inverter trips due to overcurrent when
a load is given to the motor
Decrease the voltage setting for manual
torque boost, step by step
A042 / A242
Decrease the voltage compensation gain for
automatic torque boost, step by step
A046 / A246
Decrease the slip compensation gain for
automatic torque boost, step by step
A047 / A247
“A” Function
Run
Mode
Edit
Defaults
Func.
Code
Name Description Lnitial data Units
A041
Torque boost select Two options:
00…Manual torque boost
01…Automatic torque boost
U
00
−
A241
Torque boost select, 2
nd
motor
U
00
−
A042
Manual torque boost value Can boost starting torque
between 0 and 20% above
normal V/f curve,
range is 0.0 to 20.0%
1.0 %
A242
Manual torque boost value,
2
nd
motor
1.0 %
A043
Manual torque boost
frequency
Sets the frequency of the V/f
breakpoint A in graph (top of
previous page) for torque
boost,
range is 0.0 to 50.0%
5.0 %
A243
Manual torque boost
frequency,
2
nd
motor
5.0 %
A044
V/f characteristic curve Six available V/f curves;
00…Constant torque
01…Reduced torque (1.7)
02…Free V/F
03…Sensorless vector (SLV)
U
00
−
A244
V/f characteristic curve,
2
nd
motor
U
00
−
A045
V/f gain Sets voltage gain of the
inverter, range is 20. to 100.%
100. %
A245
V/f gain, 2
nd
motor
100. %
a046
Voltage compensation gain
for automatic torque boost
Sets voltage compensation
gain under automatic torque
boost, range is 0. to 255.
100.
−
a246
Voltage compensation gain
for automatic torque boost,
2
nd
motor
100.
−
a047
Slip compensation gain for
automatic torque boost
Sets slip compensation gain
under automatic torque boost,
range is 0. to 255.
100.
−
a247
Slip compensation gain for
automatic torque boost, 2
nd
motor
100.
−
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