General gain adjustment – MITSUBISHI ELECTRIC MELSERVO MR-J2S- A User Manual

Page 171

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7. GENERAL GAIN ADJUSTMENT

(2) Adjustment sequence and mode usage

Usage

Used when you want to
match the position gain
(PG1) between 2 or more
axes. Normally not used for
other purposes.
Allows adjustment by
merely changing the
response level setting.
First use this mode to make
adjustment.
Used when the conditions of
auto tuning mode 1 are not
met and the load inertia
moment ratio could not be
estimated properly, for
example.

This mode permits
adjustment easily with three
gains if you were not
satisfied with auto tuning
results.

END

Interpolation

made for 2 or more

axes?

START

Operation

Auto tuning mode 2

OK?

Manual mode 1

OK?

Manual mode 2

OK?

OK?

No

No

Yes

No

Yes

No

Yes

No

Yes

Auto tuning mode 1

Operation

Interpolation mode

Operation

Operation

Yes

You can adjust all gains
manually when you want to
do fast settling or the like.

7.1.2 Adjustment using MR Configurator (servo configuration software)

This section gives the functions and adjustment that may be performed by using the servo amplifier with
the MR Configurator (servo configuration software) which operates on a personal computer.

Function

Description

Adjustment

Machine

analyzer

With the machine and servo motor
coupled, the characteristic of the
mechanical system can be measured by
giving a random vibration command from
the personal computer to the servo and
measuring the machine response.

You can grasp the machine resonance frequency and

determine the notch frequency of the machine
resonance suppression filter.

You can automatically set the optimum gains in

response to the machine characteristic. This simple
adjustment is suitable for a machine which has large
machine resonance and does not require much settling
time.

Gain search

Executing gain search under to-and-fro
positioning command measures settling
characteristic while simultaneously
changing gains, and automatically
searches for gains which make settling
time shortest.

You can automatically set gains which make positioning

settling time shortest.

Machine

simulation

Response at positioning settling of a
machine can be simulated from machine
analyzer results on personal computer.

You can optimize gain adjustment and command

pattern on personal computer.

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