Danfoss VLT Programming Guide

1-39 Motor Poles
Range: Function:
Application
dependent*
[2 - 100 N/A] Enter the number of motor poles.
Poles ~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 .
This parameter cannot be adjusted while the motor is running.
3.3.4 1-5* Load Indep. Setting
Parameters for setting the load-independent motor settings.
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*
[Application dependant] Set the required frequency for normal magnetising current. If the frequency is set lower than the
motor slip frequency, par. 1-50
Motor Magnetisation 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 .
VLT
®
HVAC Drive Programming Guide 3 Parameter Description
MG.11.C9.02 - VLT
®
is a registered Danfoss trademark 53
3

Danfoss VLT Specifications

General

Frequency	50/60 Hz
Enclosure	IP20, IP21, IP55, IP66
Series	VLT
Control Technique	Flux Vector Control
Output Voltage	0-Vinput
Control Method	Fieldbus
Communication Interface	PROFIBUS, CANopen
Protection Features	Overload, Overvoltage, Undervoltage, Short Circuit, Ground Fault
Cooling Method	Liquid Cooled
Storage Temperature	-25°C to +70°C
Relative Humidity	5-95% non-condensing
Altitude	Up to 1000m (3280ft) without derating, up to 4000m (13120ft) with derating
Operating Temperature	-10°C to +50°C (14°F to 122°F)