UM0432 datasheet(29/53 Pages) STMICROELECTRONICS

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UM0432

Motor control operations

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7.4.6

”3-phase PMAC motor (sinewave)" settings

Figure 16.

"3-phase PMAC motor (sinewave)" basic parameters window

Table 10.

"3-phase PMAC motor (sinewave)" basic parameters

Parameter name

Description

Poles pairs

Number of pole (north/south) pairs in the motor.

Speed regulation

Manner in which to run the motor, either open loop (without speed regulation) or

closed loop (with speed regulation).

Sensor configuration

Number of hall sensors on the motor: one, two or three sensors.

Synchronous speed

Min

Sets the target minimum stator frequency in Hz for closed-loop mode.

Max

Sets the target maximum stator frequency in Hz for closed-loop mode.

V/F (voltage vs. frequency) curve limitation

Min voltage

Sets the voltage level (expressed as a part of the 255th of the bus voltage) in the

first corner of the V/F curve.

Low frequency

Sets the frequency of the first corner of the V/F curve in Hz.

High frequency

Sets the frequency of the second corner of the V/F curve in Hz.

Start-up settings

Voltage slew rate

Affects the slew rate of the voltage during the motor start-up phase before

reaching the potentiometer set value (only in open loop).

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