Operating instructions

1-35 Main Reactance (Xh)
Range: Function:
Applica-
tion
depend-
ent
*
[Applica-
tion
depend-
ant]
Set the main reactance of the motor using
one of these methods:
1. Run an AMA on a cold motor.
The frequency converter will
measure the value from the
motor.
2. Enter the X
h
value manually.
Obtain the value from the motor
supplier.
3. Use the X
h
default setting. The
frequency converter establishes
the setting on the basis of the
motor name plate data.
NOTE
This parameter cannot be adjusted while running.
1-36 Iron Loss Resistance (Rfe)
Range: Function:
Application
dependent
*
[Applica-
tion
dependant]
Enter the equivalent iron loss resist-
ance (R
Fe
) value to compensate for
iron losses in the motor.
The R
Fe
value cannot be found by
performing an AMA.
The R
Fe
value is especially important
in torque control applications. If R
Fe
is
unknown, leave par. 1-36 Iron Loss
Resistance (Rfe) on default setting.
NOTE
This parameter cannot be adjusted while the motor is
running.
1-39 Motor Poles
Range: Function:
Applica-
tion
[2 -
100 ]
Enter the number of motor poles.
Pole
s
~n
n
@ 50 Hz ~n
n
@60 Hz
2 2700 - 2880 3250 - 3460
4 1350 - 1450 1625 - 1730
6 700 - 960 840 - 1153
The table shows the number of poles for
normal speed ranges of various motor types.
Define motors designed for other frequencies
separately. The motor pole value is always an
even number, because it refers to the total
number of poles, not pairs of poles. The
frequency converter creates the initial setting
of par. 1-39 Motor Poles based on
par. 1-23 Motor Frequency Motor Frequency and
par. 1-25 Motor Nominal Speed Motor Nominal
Speed.
1-39 Motor Poles
Range: Function:
depend-
ent
*
This parameter cannot be adjusted while the
motor is running.
3.3.4 1-5* Load Indep. Setting
1-50 Motor Magnetisation at Zero Speed
Range: Function:
100
%
*
[0 -
300
%]
Use this parameter along with par. 1-51 Min Speed
Normal Magnetising [RPM] to obtain a different
thermal load on the motor when running at low
speed.
Enter a value which is a percentage of the rated
magnetizing current. If the setting is too low, the
torque on the motor shaft may be reduced.
1-51 Min Speed Normal Magnetising [RPM]
Range: Function:
Application
dependent
*
[10 - 300
RPM]
Set the required speed for normal
magnetising current. If the speed is set
lower than the motor slip speed,
par. 1-50 Motor Magnetisation at Zero
Speed and par. 1-51 Min Speed Normal
Magnetising [RPM] are of no significance.
Use this parameter along with
par. 1-50 Motor Magnetisation at Zero
Speed. See drawing for par. 1-50 Motor
Magnetisation at Zero Speed.
1-52 Min Speed Normal Magnetising [Hz]
Range: Function:
Application
dependent
*
[Applica-
tion
dependant]
Set the required frequency for normal
magnetising current. If the frequency
is set lower than the motor slip
frequency, par. 1-50 Motor Magnetisa-
tion at Zero Speed and par. 1-51 Min
Speed Normal Magnetising [RPM] are
inactive.
Use this parameter along with
par. 1-50 Motor Magnetisation at Zero
Speed. See drawing for par. 1-50 Motor
Magnetisation at Zero Speed.
Parameter Description
VLT
®
HVAC Drive Programming Guide
MG.11.CA.02 - VLT
®
is a registered Danfoss trademark 41
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