ARTDriveG Instruction manual Chapter 7 - Parameters Description • 149
Automatic Flux Regulation
P.140 Magn curr gain (Magnetizing current gain)
The magnetizing current of an induction motor is approximately equal to the no-load current value at rated voltage
and rated frequency.
By properly setting the parameter P.140, the magnetizing current of the motor and, as a consequence, the motor
flux, is controlled to its nominal value, calculated from nameplate data.
The main benefit is a higher torque availability at low speed.
An excessive value for the gain P.140 may cause undesired oscillation.
Code LCD display [Code] & LCD select. Default MIN MAX Unit Variation IPA
P.140 Magn curr gain 0 0 100 % 0.1 424
Anti Oscillation Function
P.160 Osc damping gain (Anti Oscillation damping gain)
The parameter (current symmetry) is used to eliminate any oscillation or beat in the motor current resulting from
tolerances or configurations capable of generating oscillations within the Inverter/cable/ motor system.
If oscillations arise, it is advised to progressively increase the value of P.160, until the oscillation is damped.
Excessive values of P.160 may cause instability.
The frequency operation range is around 10Hz…30Hz .
Code LCD display [Code] & LCD select. Default MIN MAX Unit Variation IPA
P.160 Osc damping gain 0 0 100 1 425
SW Current Clamp
P.180 SW clamp enable (Software current clamp enabling)
To optimize the performance of the inverter, it is necessary to be able to accelerate and decelerate the motor with
the maximum current that the inverter can supply.
The setting of very short ramp times, that would cause the output current to exceed the limits of the drive,
activates the "Current Clamp"circuit, preventing the drive from tripping for overcurrent (OC).
It is possible to disable the clamp function by setting this parameter to zero.
Code LCD display [Code] & LCD select. Default MIN MAX Unit Variation IPA
P.180 SW clamp enable [0] Disable (not active) 1 0 1 426
[1] Enable (active)
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