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Machine Analyzer (Monitor Area) (FR-A700, A701 with Vector Control)

FUNCTION

4.13 Machine Analyzer (Monitor Area) (FR-A700, A701 with Vector

Control)

Machine analyzer reads and analyzes the torque and speed data when the inverter oscillates the motor at random torque for

about 0.5 to 4s.

This allows measuring of the response frequency characteristic of speed relative to the motor torque of the machine so that

you can grasp the frequency at which the mechanical system has the resonance point.

The analyzed data can be saved in a file (Export). And the saved data can be read (Import) and displayed. (Refer to page 94)

Select [M

achine Analyzer] under [View] menu to display "Machine Analyzer" window.

Before starting Machine Analyzer operation, set the oscillation conditions and oscillation mode.

Machine Analyzer window

Note

• The Machine Analyzer function is available only for the system that can perform vector control with an encoder (FR-

A7AP/FR-A7AL required).

• Machine Analyzer will not work in the following cases.

• Inverter running

• When the second motor is selected (Pr. 450 is not "9999")

• When the control mode is other than the vector control mode (Pr. 800 is not "0 to 5")

• Modbus-RTU communication is selected (Pr. 549 = "1")

• If a motor shaft is locked when performing Machine Analyzer, correct data may not be obtained, forced to end Machine

Analyzer. Check the load applied to the motor beforehand.

No. Name Function and Description

Waveform data

Frequency characteristic measuring results are displayed in the Bode diagram (gain,

phase).

Start Starts the Machine Analyzer.

Stml Condition Sets the oscillation conditions for Machine Analyzer.

Stml Mode Sets the oscillation mode for Machine Analyzer.

Resonance Point, Anti Resonance

Point

Used to directly enter and specify the resonance point and opposite resonance point when

they cannot be detected automatically.

Y-axis Scale Optimization

Used to change the scale automatically so that the waveform is contained within the

window.