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Diagnostics Optimization CT MODBUS RTU Technical Data
E300 Design Guide 137
Issue Number: 1
A18 (Motor Rated Current B02)
Enter the motor name plate value for the motor rated current.
A19 (Motor Rated Voltage B03)
Enter the motor name plate value for the motor rated voltage
A20 (Motor Number Of Poles B05)
The numeric value in number of motor poles should be set to the number of motor pole pairs (i.e. number of motor poles / 2). The text string
associated with number of motor poles indicates the number of motor poles (i.e. the parameter value x 2).
Open-loop This parameter is used during the calculation of the motor speed and in then applying the correct slip compensation. When Automatic (0)
is selected, the number of motor poles is automatically calculated from the motor rated frequency and motor rated speed. The number of poles = 120
x rated frequency / rpm rounded to the nearest even number.
RFC-A This parameter must be set correctly for the vector control algorithms to operate as expected. When Automatic (0) is selected the number of
motor poles is automatically calculated from the motor rated frequency and motor rated speed rpm. The number of poles = 120 x rated frequency /
rpm rounded to the nearest even number.
RFC-S This parameter must be set correctly for the vector control algorithms to operate as expected. If Automatic (0) is selected in RFC-S mode the
number of poles are set = 3 pole pairs (6) and no calculation is carried out.
A21 (Motor Rated Frequency B06)
Enter the motor name plate value for the motor rated frequency
A22 (Motor Rated Speed B07)
Open-loop This is the speed at which the motor will rotate when supplied with its base frequency at the rated voltage under rated load conditions
(synchronous speed - slip speed). Entering the correct value into this parameter, allows the drive to increase the output frequency as a function of
A18 {B02} Motor Rated Current
RW Num RA US
OL
Ú
±VM_RATED_CURRENT
A
Ö
Maximum Heavy Duty
Rating
(J05)
RFC-A
RFC-S
A19 {B03} Motor Rated Voltage
RW Num RA US
OL
Ú
±VM_AC_VOLTAGE_
SET V
Ö
200 V drive: 230 V
50 Hz default 400 V drive: 400 V
60 Hz default 400 V drive: 460 V
575 V drive: 575 V
690 V drive: 690 V
RFC-A
RFC-S
A20 {B05} Number Of Motor Poles
RW Txt US
OL
Ú
Automatic (0) to
480 Poles (240)
Ö
Automatic (0)
RFC-A
RFC-S
Ö
6 Poles (3)
A21 {B06} Motor Rated Frequency
RW Num US
OL
Ú
0.0 to 550.0 Hz
Ö
50 Hz default: 50.0 Hz
60 Hz default: 60.0 Hz
RFC-A
RFC-S
A22 {B07} Motor Rated Speed
RW Num ND US
OL
Ú
0 to 33000 rpm
Ö
50 Hz default: 1500 rpm
60 Hz default: 1800 rpm
RFC-A
50 Hz default: 1450 rpm
60 Hz default: 1750 rpm
RFC-S 0.00 to 33000.00 rpm 3000.00 rpm
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