1. FUNCTIONS AND CONFIGURATION

1.4 Function list

The following table lists the functions of this servo. For details of the functions, refer to the corresponding chapters and sections.

Function

 

 

Description

 

 

(Note)

Refer to

 

 

 

 

Control mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Section 3.1.1

Position control mode

This servo is used as position control servo.

P

Section 3.4.1

 

 

 

 

 

 

 

 

 

Section 4.2.2

 

 

 

 

 

 

 

 

 

Section 3.1.2

Speed control mode

This servo is used as speed control servo.

S

Section 3.4.2

 

 

 

 

 

 

 

 

 

Section 4.2.3

 

 

 

 

 

 

 

 

 

Section 3.1.3

Torque control mode

This servo is used as torque control servo.

T

Section 3.4.3

 

 

 

 

 

 

 

 

 

Section 4.2.4

Position/speed control change

Using external input signal, control can be switched

P/S

Section 3.4.4

mode

between position control and speed control.

 

 

Speed/torque control change

Using external input signal, control can be switched

S/T

Section 3.4.5

mode

between speed control and torque control.

 

 

Torque/position control

Using external input signal, control can be switched

T/P

Section 3.4.6

change mode

between torque control and position control.

 

 

High-resolution encoder

High-resolution encoder of 131072 pulses/rev is used as a

P, S, T

 

servo motor encoder.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Absolute position detection

Merely setting a home position once makes home position

P

Chapter 15

system

return unnecessary at every power-on.

 

 

 

 

 

You can switch between gains during rotation and gains

 

 

Gain changing function

during stop or use an external signal to change gains

P, S

Section 8.3

 

during operation.

 

 

 

 

 

 

 

Adaptive vibration

Servo amplifier detects mechanical resonance and sets filter

 

 

characteristics

automatically

to

suppress mechanical

P, S, T

Section 8.1

suppression control

vibration.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low-pass filter

Suppresses high-frequency resonance which occurs as servo

P, S, T

Section 8.2

system response is increased.

 

 

 

 

 

 

 

 

 

 

Analyzes the frequency characteristic of the mechanical

 

 

Machine analyzer function

system by simply connecting a servo configuration software-

P

 

 

installed personal computer and servo amplifier.

 

 

Machine simulation

Can simulate

machine

motions on

a

personal computer

P

 

screen on the basis of the machine analyzer results.

 

 

 

 

Gain search function

Personal computer changes

gains

automatically and

P

 

searches for overshoot-free gains in a short time.

 

 

 

 

Slight vibration suppression

Suppresses vibration of

 

1 pulse produced at a servo motor

P

Section 7.5

 

control

stop.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Electronic gear

Input pulses can be multiplied by 1/50 to 50.

P

Parameters No. 3, 4

 

Automatically adjusts the gain to optimum value if load

 

 

Auto tuning

applied to the servo motor shaft varies. Higher in

P, S

Chapter 7

 

performance than MR-J2-A servo amplifier.

 

 

Position smoothing

Speed can be increased smoothly in response to input pulse.

P

Parameter No. 7

S-pattern acceleration/

Speed can be increased and decreased smoothly.

S, T

Parameter No. 13

deceleration time constant

 

 

 

 

 

 

 

 

 

 

Used when the built-in regenerative brake resistor of the

 

 

Regenerative brake option

servo amplifier does not have sufficient regenerative

P, S, T

Section 13.1.1

 

capability for the regenerative power generated.

 

 

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Mitsubishi Electronics MR-J2S- A instruction manual Function list, Section, Parameter No