Firmware Manual

Appendix A—Description of Parameters
158 PowerXL DG1 Series Adjustable Frequency Drives MN040004EN—March 2014 www.eaton.com
P8.5 289 Field Weakening Point 1, 2, 3, 4 RW
The field weakening point is the output frequency at which the output voltage
reaches the set (P8.6) maximum value.
P8.6 290 Voltage at FWP 1, 2, 3, 4 RW
Above the frequency at the field weakening point, the output voltage remains at the
set maximum value. Below the frequency at the field weakening point, the output
voltage depends on the setting of the V/Hz curve parameters. See P1.8.2, P1.8.3,
P1.8.6 and P1.8.7.
When the parameters P1.1.9 and P1.1.10 (nominal voltage and nominal frequency of
the motor) are set, the parameters P1.8.4 and P1.8.5 are automatically set to the
corresponding values. If you need different values for the field weakening point and
the maximum output voltage, change these parameters after setting P1.1.9 and
P1.1.10.
P8.7 291 V/Hz Mid Freq 1, 2, 3, 4 RW
If the programmable V/Hz curve has been selected with P8.4, this parameter defines
the middle point frequency of the curve. See Figure 57.
P8.8 292 V/Hz Mid Volt 1, 2, 3, 4 RW
If the programmable V/Hz curve has been selected with the P8.4, this parameter
defines the middle point voltage of the curve. See Figure 57.
P8.9 293 Zero Frequency Volt 1, 2, 3, 4 RW
If the programmable V/Hz curve has been selected with the P1.8.3, this parameter
defines the zero frequency voltage of the curve. See Figure 57.
P8.10 288 Switching Frequency 1, 2, 3, 4 RW
Motor noise can be minimized using a high switching frequency, but the amount of
heat dissipation increases. Increasing the switching frequency reduces the capacity
of the frequency converter unit.
For protection against thermal overload, the switching frequency automatically is
reduced in the fact that the ambient temperature is high as well as high load
currents.
P8.11 1665 Sine Filter Enable 1,2,3,4 RW
Enables the frequency converter to have a sine filter connected to the output motor
leads.
P8.12 294 Overvolt Contr 1, 2, 3, 4 RW
These parameters allow the overvoltage controllers to be switched out of operation.
This may be useful, for example, if the main supply voltage varies more than –15%
to +10% and the application will not tolerate this overvoltage. In this case, the
regulator controls the output frequency taking the supply fluctuations into account.
0 Controller switched off
1 Controller switched on
P8.13 298 Load Drooping 4 RW
The drooping function enables speed drop as a function of load. This parameter sets
that amount corresponding to the nominal torque of the motor.
P8.14 299 Identification 4 RW
With this parameter, the drive will identify the motor and adjust tuning parameters to
improve starting torque and closed loop current control. Upon running this operation
it will be active until test is performed and then set back to 0.
0 Not active
1 Identification only stator resistor
2 Identification with run
3 Identification no run
P8.15 1574 Neg Frequency Limit 4 RW
Frequency limit in the negative direction.
P8.16 1576 Pos Frequency Limit 4 RW
Frequency limit in the positive direction.
Code Modbus ID Parameter Application
RO/RW