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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)
Control mode
Refer to
Position control mode This servo is used as position control servo. P
Section 3.1.1
Section 3.4.1
Section 4.2.2
Speed control mode This servo is used as speed control servo. S
Section 3.1.2
Section 3.4.2
Section 4.2.3
Torque control mode This servo is used as torque control servo. T
Section 3.1.3
Section 3.4.3
Section 4.2.4
Position/speed control change
mode
Using external input signal, control can be switched
between position control and speed control.
P/S Section 3.4.4
Speed/torque control change
mode
Using external input signal, control can be switched
between speed control and torque control.
S/T Section 3.4.5
Torque/position control
change mode
Using external input signal, control can be switched
between torque control and position control.
T/P Section 3.4.6
High-resolution encoder
High-resolution encoder of 131072 pulses/rev is used as a
servo motor encoder.
P, S, T
Absolute position detection
system
Merely setting a home position once makes home position
return unnecessary at every power-on.
PChapter 15
Gain changing function
You can switch between gains during rotation and gains
during stop or use an external signal to change gains
during operation.
P, S Section 8.5
Adaptive vibration
suppression control
Servo amplifier detects mechanical resonance and sets filter
characteristics automatically to suppress mechanical
vibration.
P, S, T Section 8.3
Low-pass filter
Suppresses high-frequency resonance which occurs as servo
system response is increased.
P, S, T Section 8.4
Machine analyzer function
Analyzes the frequency characteristic of the mechanical
system by simply connecting a servo configuration software-
installed personal computer and servo amplifier.
P
Machine simulation
Can simulate machine motions on a personal computer
screen on the basis of the machine analyzer results.
P
Gain search function
Personal computer changes gains automatically and
searches for overshoot-free gains in a short time.
P
Slight vibration suppression
control
Suppresses vibration of 1 pulse produced at a servo motor
stop.
P Section 7.5
Electronic gear Input pulses can be multiplied by 1/50 to 50. P Parameters No. 3, 4
Auto tuning
Automatically adjusts the gain to optimum value if load
applied to the servo motor shaft varies. Higher in
performance than MR-J2 series servo amplifier.
P, S Chapter 7
Position smoothing Speed can be increased smoothly in response to input pulse. P Parameter No. 7
S-pattern acceleration/
deceleration time constant
Speed can be increased and decreased smoothly. S, T Parameter No. 13
Regenerative brake option
Used when the built-in regenerative brake resistor of the
servo amplifier does not have sufficient regenerative
capability for the regenerative power generated.
P, S, T Section 13.1.1
Brake unit
Used when the regenerative brake option cannot provide
enough regenerative power.
Can be used with the MR-J2S-500A
MR-J2S-700A.
P, S, T Section 13.1.2