5-49
5-5 Settings Relating to Control Method
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
5
Functions
Torque Boost
Compensates for the voltage drop caused by the resistance in the 1st resistance of the motor,
or by wiring to suppress torque reduction at a low speed range.
To select the automatic torque boost for A041/A241, set Motor Capacity (H003/H203) and
Motor Pole Number (H004/H204) according to your motor.
Manual Torque Boost
Outputs the voltage set in A042/A242 or A043/A243.
In A042/A242, set a ratio based on the voltage set in the motor voltage selection as 100%. The
ratio set here corresponds to the output frequency of 0 Hz.
If you raise the set value of the manual torque boost, be careful about motor overexcitation.
Otherwise, the motor may burn out.
The Manual Torque Boost Frequency A043/A243 is set in percentage terms based on the base
frequency as 100%.
Switch between Controls 1/2 using the SET terminal which is a multi-function input terminal to
which "08: SET" is allocated.
Parameter
No.
Function name Data
Default
setting
Unit
A041/A241
Torque Boost
Selection 1/2
00: Manual torque boost
00 −
01: Automatic torque boost
A042/A242
Manual
Torque Boost Voltage 1/2
0.0 to 20.0
Ratio to motor voltage (A082/A282)
1.0 %
A043/A243
Manual Torque Boost
Frequency 1/2
0.0 to 50.0
Ratio to base frequency (A003/A203)
5.0 %
H003/H203 Motor Capacity 1/2 0.1 to 18.5
Default
setting
kW
H004/H204 Motor Pole Number 1/2 2/4/6/8/10 4 pole
A046/A246
Automatic Torque Boost
Voltage Compensation
Gain 1/2
0. to 255.
Refer to "Automatic Torque Boost" on
page 5-50.
100. −
A047/A247
Automatic Torque Boost
Slip Compensation Gain
1/2
0. to 255.
Refer to "Automatic Torque Boost" on
page 5-50.
100. −
Output frequency
Base frequency
(100 %)
A042/A242
A043/A243
100
Output
voltage (%)