Eaton PowerXL DM1 Series Applications Manual page 41

Table 13. Motor control (Cont.).
V/Hz ratio
P5.1.4 ab
N.A.
Minimum value:
Options: 0 = Linear - the voltage of the motor changes linearly with the frequency in the constant flux area from 0 Hz to the field weakening point
where the nominal voltage is supplied. A linear V/Hz ratio should be used in constant torque applications.
1 = Squared - the voltage of the motor changes following a squared curve with the frequency in the area from 0 Hz to the field
weakening point where the nominal voltage is supplied. The motor runs under magnetized below the field weakening point and
produces less torque and electromechanical noise. A squared V/Hz ratio can be used in applications where the torque demand of
the load is proportional to the square of the speed.
3 = Linear with flux optimization - the drive starts to search for the minimum motor current in order to save energy. This mode is called
Eaton's Active Energy Control which will reduce the voltage and current but still maintain the desired speed.
Description: Selects the V/Hz ratio.
0 = Linear;
1 = Squared; or
3 = Linear + flux optimization.
Switching frequency
P5.1.10 b
Minimum value: MinSwitchFreq kHz
Description: Sets the switching frequency for the PWM output waveform.
Identification
P5.1.16 ab
Minimum value: N.A.
Options: 0 = Not action.
1 = Identification only stator resistor - does not spin the motor. This can be done with load attached.
2 = Identification with run - motor stator resistor is completed then the motor is run. This must be completed with unloaded motor.
3 = Identification no run - motor is supplied with current and voltage but at zero frequency.
4 = Identification only inertia - identification for the system inertia only.
Description: This parameter enables the drive to make an motor identification cycle of the motor once complete the drive will adjust tuning
parameters to improve starting torque and open loop vector control performance. Once set and a run command is given, the operation
will be active then set back to 0 when completed. When a run command is issued, the message on the keypad will indicate "Auto
tuning" is being performed. If there is an issue with the motor identification, a fault message will be displayed.
Parameter value can only be changed after the drive has stopped.
a
Parameter value will be set to be default when changing macros.
b
POWERXL DM1 SERIES VARIABLE FREQUENCY DRIVES MN040049EN—September 2021 www.eaton.com
N.A.
Maximum value:
U[V]
Un
Default: Nominal
Voltage
Voltage of the Motor
at FWP
Linear
0 = Linear and 1 = Squared.
Maximum value: MaxSwitchFreq kHz
Maximum value: N.A.
Default value:
Field Weakening
Point
Squared
Default: Nominal
Frequency of the
Motor
Default value:
Default value:
Chapter 4 - Standard
ID 108
0
f [Hz]
ID 288
DefaultSwitchFreqCT
kHz
ID 299
0
31