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1. FUNCTIONS AND CONFIGURATION
1 - 4
1.3 Function list
The following table lists the functions of this servo. For details of the functions, refer to the reference field.
Function Description Reference
Absolute position detection
system
Merely setting a home position once makes home position return unnecessary
at every power-on. A battery (MR-J3BAT) and an absolute position storage unit
(MR-BTAS01) are required.
Chapter 9
Gain changing function You can switch between gains during rotation and gains during stop or use an
input device to change gains during operation.
Advanced vibration
suppression control
This function suppresses vibration at the arm end or residual vibration.
Adaptive filter Servo amplifier detects mechanical resonance and sets filter characteristics
automatically to suppress mechanical vibration.
Low-pass filter Suppresses high-frequency resonance which occurs as servo system response
is increased.
MR-J3-
B Servo
Amplifier Instruction
Manual
Machine analyzer function Analyzes the frequency characteristic of the mechanical system by simply
connecting MR Configurator installed personal computer and servo amplifier.
MR Configurator is necessary for this function.
Make sure to execute the machine analyzer function after the magnetic pole
detection. If the magnetic pole detection is not executed, this function may not
operate properly.
Machine simulation Can simulate machine motions on a personal computer screen on the basis of
the machine analyzer results. MR Configurator is necessary for this function.
Gain search function Personal computer with MR Configurator changes gains automatically and
searches for overshoot-free gains in a short time. MR Configurator is necessary
for this function.
Robust disturbance
compensation
This function provides better disturbance response in case of low response level
due to high load inertia moment ratio for the roll send axis.
MR Configurator is necessary for this function.
Advanced Gain search Advanced Gain search automatically searches for the optimum parameter for
settle time to be short.
The gain can be adjusted by setting sequentially in accordance with wizard
screens.
MR Configurator is necessary for this function.
Slight vibration suppression
control
Suppresses vibration of 1 pulse produced at a direct drive motor stop.
Auto tuning Automatically adjusts the gain to optimum value if load applied to the direct drive
motor rotor varies.
Brake unit Used when the regenerative option cannot provide enough regenerative power.
Can be used the 5kW or more servo amplifier.
Power regenerative converter Used when the regenerative option cannot provide enough regenerative power.
Can be used the 5kW or more servo amplifier.
Regenerative option Used when the built-in regenerative resistor of the servo amplifier does not have
sufficient regenerative capability for the regenerative power generated.
Alarm history clear Alarm history is cleared.
Output signal selection
(Device settings)
The pins that output the output devices, including the malfunction (ALM) and the
dynamic brake interlock (DB), can be changed to certain pins of the CN3
connectors.
Output signal (DO) forced
output
Output signal can be forced on/off independently of the servo status. Use this
function for output signal wiring check, etc.
Test operation mode JOG operation positioning operation DO forced output. However, MR
Configurator is necessary for positioning operation.
Analog monitor output Servo status is output in terms of voltage in real time.
MR-J3-
B Servo
Amplifier Instruction
Manual
MR Configurator
(C2 or later)
Using a personal computer, parameter setting, test operation, status display,
etc. can be performed.