Function List - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

1.5

Function list

The following table lists the functions of this servo. For details of the functions, refer to each section of the detailed explanation
field.
Function
Model adaptive control
Cyclic synchronous position mode
(CSP)
Cyclic synchronous velocity mode
(CSV)
Cyclic synchronous torque mode
(CST)
Touch probe
High-resolution encoder
Absolute position detection system
Gain switching function
Advanced vibration suppression
control 
Machine resonance suppression
filter
Shaft resonance suppression filter
Adaptive filter 
Low-pass filter
Machine analyzer function
Robust filter
Slight vibration suppression control
Auto tuning
Brake unit
1 FUNCTIONS AND CONFIGURATION
38
1.5 Function list
Description
This realizes a high response and stable control following the ideal model. The two-degrees-of-
freedom-model model adaptive control enables you to set a response to the command and
response to the disturbance separately.
Additionally, this function can be disabled. Refer to the following for disabling this function.
Page 275 Model adaptive control disabled
Operation is performed in the cyclic synchronous position mode.
Operation is performed in the cyclic synchronous velocity mode.
Operation is performed in the cyclic synchronous torque mode.
When the touch probe signal is turned on, the current position is latched. This is used with servo
amplifiers with software version A1 or later.
High-resolution encoder of 4194304 pulses/rev is used as the encoder of the rotary servo motor
compatible with the MELSERVO-J4 series.
Merely setting a home position once makes home position return unnecessary at every power-on.
You can switch gains during rotation and during stop, and can use an input device to switch gains
during operation.
This function suppresses vibration at the arm end or residual vibration.
This is a filter function (notch filter) which decreases the gain of the specific frequency to suppress
the resonance of the mechanical system.
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.
Servo amplifier detects mechanical resonance and sets filter characteristics automatically to
suppress mechanical vibration.
Suppresses high-frequency resonance which occurs as servo system response is increased.
Analyzes the frequency characteristic of the mechanical system by simply connecting a MR
Configurator2 installed personal computer and servo amplifier.
MR Configurator2 is necessary for this function.
This function provides better disturbance response in case low response level that load to motor
inertia ratio is high for such as roll send axes.
Suppresses vibration of 1 pulse produced at a servo motor stop.
Automatically adjusts the gain to optimum value if load applied to the servo motor shaft varies.
Used when the regenerative option cannot provide enough regenerative power.
Can be used for the 5 kW or more servo amplifier.
Detailed
explanation




Page 544
Touch probe

Page 447
ABSOLUTE
POSITION
DETECTION
SYSTEM
Page 259
Gain switching
function
Page 254
Advanced
vibration
suppression
control II
Page 247
Machine
resonance
suppression
filter
Page 252
Shaft
resonance
suppression
filter
Page 250
Adaptive filter II
Page 253
Low-pass filter

[Pr. PE41]
[Pr. PB24]
Page 237
Auto tuning
Page 353
FR-BU2-(H)
brake unit