Automatic Torque Boost - Omron MX2 Series User Manual

Automatic Torque Boost

• In the 3G3MX2-V1 Series Inverter, the default data for A041/A241 were changed to Automatic torque
boost (A041/A241 = 01).
With this setting, the inverter increases the output voltage automatically depending on the load condi-
tion. In other words, the output voltage generated when the automatic torque boost is enabled is the
sum of manual torque boost voltage and the automatic torque boost voltage.
• To use the automatic torque boost function effectively, set the 1st/2nd Motor Capacity (H003/H203)
and the 1st/2nd Motor Pole Number (H004/H204) correctly according to your motor.
• To avoid possible overcurrent tripping during deceleration, set the AVR Selection (A081) to 00
(Always ON).
• To enable the slip compensation function in addition to the voltage compensation provided by the
automatic torque boost function, first set the 1st/2nd Automatic Torque Boost Slip Compensation
Gain (A047/A247) to 100%.
• If the automatic torque boost does not provide the intended performance characteristics, adjust it for
each adjustment item shown in the following table.
Phenomenon
Torque is insufficient at
low speeds. (Motor
does not rotating at
low speeds.)
Overcurrent trip
occurs when load is
applied.
Phenomenon
Rotation speed
decreases when load
is applied.
Rotation speed
increases when load is
applied.
Multi-function Compact Inverter 3G3MX2-V1 User's Manual (I585-E1)
Adjustment method
(1) Gradually increase the Automatic Torque Boost Voltage
Compensation Gain.
(2) Set the Automatic Torque Boost Slip Compensation Gain to
100. Then, increase the set value gradually.
(3) Gradually increase the Manual Torque Boost Voltage.
(4) Decrease the Carrier Frequency.
(1) Gradually decrease the Automatic Torque Boost Voltage
Compensation Gain.
(2) Set the Automatic Torque Boost Slip Compensation Gain to
100. Then, decrease the set value gradually.
(3) Gradually decrease the Manual Torque Boost Voltage.
(4) Gradually decrease the Overload Limit Parameter.
Adjustment method
Set the Automatic Torque Boost Slip Compensation Gain to 100
and gradually increase the value.
Set the Automatic Torque Boost Slip Compensation Gain to 100
and gradually decrease the value.
5 Basic Settings
Adjustment item
A046/A246
A047/A247
A042/A242
b083
A046/A246
A047/A247
A042/A242
b023/b223/b026
Adjustment item
A047/A247
A047/A247
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