1. FUNCTIONS AND CONFIGURATION
1 - 5
1.4 Function list
The following table lists the functions of this servo. For details of the functions, refer to each section
indicated in the detailed explanation field. "MR-J4-_GF_" means "MR-J4-_GF_(-RJ) Servo Amplifier
Instruction Manual (Motion Mode)".
Function Description
Detailed
explanation
Model adaptive control
This function achieves a high response and stable control following the ideal model.
The two-degrees-of-freedom model adaptive control enables you to set a response to
the command and a response to the disturbance separately. This function can be
disabled. To disable this function, refer to section 7.5 of "MR-J4-_GF_(-RJ) Servo
Amplifier Instruction Manual (Motion Mode)".
Homing mode (hm)
The servo amplifier operates in the home position return mode.
Section 6.1
Jog mode (jg)
This is a control mode where the servo motor speed is set to drive the servo motor
manually in the commutation with a controller. This control mode is not in CiA 402
standard (Mitsubishi Electric original).
Section 6.4
Point table mode (pt)
This is a control mode where the servo motor is driven according to the commands of
the travel distance, speed and others stored in the specified point table No. in the
commutation with a controller. This control mode is not in CiA 402 standard (Mitsubishi
Electric original).
Section 6.2
Indexer mode (idx)
In this control mode, the servo motor is driven to the station specified in the
communication with a controller. This control mode is not in CiA 402 standard
(Mitsubishi Electric original).
Section 6.3
Touch probe function setting
When the touch probe signal turns on, the current position is latched. The latched data
can be read with communication commands.
High-resolution encoder
Rotary servo motors compatible with the MELSERVO-J4 series are equipped with a
high-resolution encoder of 4194304 pulses/rev.
Absolute position detection
system
Home position return is required only once, and not required at every power-on.
MR-J4-_GF_
chapter 12
Gain switching function
You can switch gains during rotation/stop, and can use input devices to switch gains
during operation.
MR-J4-_GF_
section 7.2
Advanced vibration
suppression control II
This function suppresses vibration and residual vibration at an arm end.
MR-J4-_GF_
section 7.1
Machine resonance
suppression filter
This filter function (notch filter) decreases the gain of the specific frequency to
suppress the resonance of the mechanical system.
MR-J4-_GF_
section 7.1
Shaft resonance suppression
filter
When a load is mounted to the servo motor shaft, resonance by shaft torsion during
driving may generate a mechanical vibration at high frequency. The shaft resonance
suppression filter suppresses the vibration.
MR-J4-_GF_
section 7.1
Adaptive filter II
The servo amplifier detects mechanical resonance and sets filter characteristics
automatically to suppress mechanical vibration.
MR-J4-_GF_
section 7.1
Low-pass filter
Suppresses high-frequency resonance which occurs as the servo system response is
increased.
MR-J4-_GF_
section 7.1
Machine analyzer function
Analyzes the frequency characteristic of the mechanical system by simply connecting
an MR Configurator2 installed personal computer and the servo amplifier.
MR Configurator2 is necessary for this function.
Robust filter
Improves a disturbance response when a response performance cannot be increased
because of a large load to motor inertia ratio, such as a roll feed axis.
[Pr. PE41]
Slight vibration suppression
control
Suppresses vibration of ±1 pulse generated at a servo motor stop.
[Pr. PB24]
Electronic gear
Positioning control is performed with the position command from the controller
multiplied by a set electronic gear ratio. In the point table mode, the position
commands can be multiplied by 1/864 to 33935.
In the indexer mode, the position commands can be multiplied by 1/9999 to 9999.
[Pr. PA06]
[Pr. PA07]
Auto tuning
Automatically adjusts the gain to optimum value if load applied to the servo motor
shaft varies.
MR-J4-_GF_
section 6.3
Brake unit
Used when the regenerative option cannot provide enough regenerative power.
Can be used for the 5 kW or more servo amplifier.
MR-J4-_GF_
section 11.3
Power regeneration converter
Used when the regenerative option cannot provide enough regenerative power.
Can be used for the 5 kW or more servo amplifier.
MR-J4-_GF_
section 11.4
Regenerative option
Use a regenerative option when the built-in regenerative resistor of the servo amplifier
does not have sufficient regenerative capacity for a large regenerative power
generated.
MR-J4-_GF_
section 11.2
Summary of Contents for MR-J4-_GF
Page 27: ...2 CC Link IE FIELD NETWORK BASIC PROTOCOL 2 4 MEMO ...
Page 185: ...8 TROUBLESHOOTING AT POWER ON 8 2 MEMO ...
Page 227: ...9 MANUFACTURER FUNCTIONS 9 42 MEMO ...
Page 269: ...10 OBJECT DICTIONARY 10 42 MEMO ...
Page 271: ...MEMO ...