Voltage Gain; Voltage Compensation Gain And Slip Compensation Gain - Omron 3G3MX2 User Manual

"A" Group: Standard Functions
Func.
Code






Voltage gain - Using parameter
A045 you can modify the voltage
gain of the inverter (see graph at
right). This is specified as a percent-
age of the full scale output voltage.
The gain can be set from 20% to
100%. It should be adjusted in accor-
dance with the motor specifications.
Gain can be changed even during
operation in V/f mode, and while
stopped in SLV mode.
After the setting is done, please be
sure to reset (terminal RS on/off) to recalculate the motor constant.
Refrain from change the setting value suddenly (within 10%). Inverter may
overvoltage trip due to the rapid change of output voltage.
Voltage compensation gain and slip compensation gain - Using parame-
 
ters and

boost mode (
including other parameters.
Symptom
Motor torque is not enough
at low speed (The motor
does not rotate at low
speed)
Motor speed decreases
(stalls) when a load is
given to the motor
Motor speed increases
when a load is given to the
motor
The inverter trips due to
overcurrent when a load is
given to the motor
"A" Function
Name
Torque boost selection
2nd torque boost selection
Manual torque boost voltage
2nd manual torque boost
voltage
Manual torque boost frequency Sets the frequency of the V/f
2nd manual torque boost
frequency
100%
80%
, you can obtain better performance under automatic torque

= ). See following table for the concept of adjustment,
Adjustment
Increase the voltage setting for manual
torque boost, step by step/
Increase the voltage compensation gain
for automatic torque boost, step by step
Increase the slip compensation gain for
automatic torque boost, step by step
Reduce carrier frequency
Increase the slip compensation gain for
automatic torque boost, step by step
Decrease the slip compensation gain for
automatic torque boost, step by step
Decrease the voltage setting for manual
torque boost, step by step
Decrease the voltage compensation gain
for automatic torque boost, step by step
Decrease the slip compensation gain for
automatic torque boost, step by step
Description
Two options:
... Manual torque boost
... Automatic torque boost
Can boost starting torque
between 0 and 20% above normal
V/f curve, range is 0.0 to 20.0%
breakpoint A in graph (top of pre-
vious page) for torque boost,
range is 0.0 to 50.0%
Section 3-5
A045=100
V
A045=80
0
fbase
Adjust item
 / 
 / 
 / 

 / 
 / 
 / 
 / 
 / 
Run Defaults
Mode
EU
Edit

00

00

1.0

1.0

5.0

5.0
fmax
Units
–
–
%
%
%
%
103