Application Guide | iC2-Micro Frequency Converters
7.5.2 Motor Data (Menu Index 4.2)
7.5.2.1 General Settings (Menu Index 4.2.1)
P 4.2.1.1 Motor Type
Select the motor type. Select [0] Asynchronous Induction Motor, IM for asynchronous motors. Select [1] PM, Non-salient SPM or [3] PM,
Salient IPM for salient or non-salient PM motors. PM motors are divided into 2 groups, with either surface mounted (non-salient) or
interior (salient) magnets.
Default value: 0 [Asynchronous Induction Motor, IM] Parameter type: Selection
Parameter
number:
110 Unit: –
Data type: enum Access type: Read/Write
The following are the selections for the parameter.
Selection number Selection name Selection description
0 Asynchronous Induction Motor, IM For asynchronous Induction Motor, IM.
1 PM, Non-salient SPM For permanent magnet (PM) motors with surface-mounted (non-
salient) magnets. Refer to P 4.4.4.7 Damping Gain to P 4.4.4.10
Voltage filter time const. for details about optimizing the motor
operation.
3 PM, Salient IPM For permanent magnet (PM) motors with interior (salient)
magnets.
P 4.2.1.2 Number of Pole
Enter the number of motor poles.
Default value: 4 Parameter type: Range (2–100)
Parameter
number:
139 Unit: –
Data type: uint8 Access type: Read/Write
The dependency of the motor’s synchronous speed ns in RPM of the frequency f of the supply in Hz (P 1.1.1 Grid Frequency) and the
number of pole pairs p in P 4.2.1.2 Nameplate Data are given by the following formula:
P 4.2.2.4 Nominal Frequency*120/P 4.2.2.5 Nominal Speed
For example, for a motor with 2-pole pairs (4 poles) and a frequency of the power supply of 50 Hz, the synchronous speed of the motor is
1500 RPM. The following table shows the number of pole pairs for normal speed ranges of various motor types.
Pole pairs ~nn@ 50 Hz ~nn@ 60 Hz
1 2700–2880 3250–3460
2 1350–1450 1625–1730
3 700–960 840–1153
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