Control Techniques Commander SE Advanced User's Manual page 43

Variable speed drive for 3 phase induction motors from 0.25kw to 37kw
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5.01
±
parameter 1.06 (or 21.01)
The range of this parameter is 1.06 (or 21.01) plus whatever is added or subtracted by the current limit algorithm and for the
slip compensation.
This parameter gives the output frequency of the drive. This is the sum of the post ramp reference and the slip compensation:
2.01+ rated slip frequency x 4.02 / rated active current
2.01 is limited to the maximum frequency defined by 1.06, plus a margin of 20% to allow the drive to control current
effectively at maximum speed, but the final frequency can exceed this by the slip compensation frequency.
5.02
Max Volts
This is the fundamental line voltage at the inverter output.
5.03
√3 x I Max x 5.09
This is the total output power of the drive. This is calculated from the in phase components of voltage and current such that
the total real output power is measured.
The range of this parameter is calculated by the above equation.
I Max = 150% of drive rated current
5.04
The motor rpm is calculated from the post ramp reference (2.01). The speed of rotation is calculated as follows:
rpm = 60 x frequency / No of pole pairs
= 60 x 2.01 / (5.11 / 2)
The result will be accurate providing the slip compensation has been set up correctly with the rated full load speed parameter
(5.08).
However, if 5.11 = 0 (default), the drive calculates the number of poles automatically and so the above equation is not
applicable.
5.05
400V units > 0 ~ 830
200V units > 0 ~ 420
Voltage across the internal DC Bus of the drive
5.06
The motor rated frequency is used to define the voltage to frequency characteristic applied to the drive (see 5.09 and 5.14).
5.07
0 ~ Drive rated current
The motor rated current should be set to the machine nameplate value for rated current.
This value is used in the following:
Current limit, parameter 4.07
IxT system, parameter 4.15
Slip compensation, parameter 5.08
Dynamic V to F control, parameter 5.13
Commander SE Advanced User Guide
Issue Number: 4
Motor frequency
Motor voltage
Total motor power (Output power from drive)
1000
Motor rpm
±
9999
DC Bus voltage
Motor rated frequency
EUR> 50.0
0 ~
1000
USA> 60.0
Motor rated current
Drive rated
current
Hz
RO
Bi
V
RO
Bi
kW
RO
Bi
rpm
RO
Bi
V
RO
Uni
Hz
RW
Uni
A
RW
Uni
P
P
P
P
P
43

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