Bosch Rexroth IndraDrive MPH-02 Functional Description page 166

Firmware for drive controllers

Table of Contents

Motor, Mechanical Axis System, Measuring Systems

P-0-0528, Flux control loop

proportional gain

P-0-4042, Characteristic of motor

magnetizing inductance

P-0-4043, Rotor time constant

If the values of the manufacturer's specification are not available, they can

be determined by measurement by means of approximation:

inductance of motor between terminals (in mH), third terminal is not

Approximate calculation for P-0-4039 (in mH)

inductance of motor between terminals (in mH), third terminal is not

Approximate calculation for P-0-4040 (in mH)

If a rated voltage and rated frequency have been indicated for the motor,

approximation:

rms value of the rated voltage (outer conductor voltage)

rms value of the no-load current in the rated point, alternatively the

magnetization current P-0-4004 (see above)

rated frequency

inductance of motor between terminals (in mH), third terminal is not

Calculating the value for P-0-4041 (in mH) by means of

approximation

If the required rated data of the motor are not available, the

magnetizing inductance can also be determined by a no-load

test. With this test the voltage, current and frequency have to

be determined and used for the above formula!

The value of the parameter P-0-0528, Flux control loop proportional gain

is used for controlling the magnetic flux in the asynchronous motor.

P-0-4041, Motor magnetizing inductance, see previous calculations

P-0-4040, Rotor leakage inductance, see previous calculations

P-0-4039, Stator leakage inductance, see previous calculations

Value for P-0-0528

list parameter P-0-4042

→ enter the value "1,0" in each of the five lines!

The value for parameter P-0-4043, Rotor time constant has to be taken

from the completed form "Output Data for Asynchronous Motors".

If the value is not available, it can be calculated by means of

approximation:

MPH-02, MPB-02, MPD-02

DOK-INDRV*-MP*-02VRS**-FK01-EN-P