Mitsubishi Electric Melservo-J3 Series MR-J3-B, Instruction Manual

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1. FUNCTIONS AND CONFIGURATION
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
Positioning by automatic
operation
Select the required ones from among 31 preset point tables and perform operation in
accordance with the set values.
Use the external input signal or communication function to choose the point tables.
Section 5.4
Varied speed operation
Servo motor speed can be varied continuously until the preset moving distance is
reached. (Max. set speeds: 255 speeds) Section 5.4.2
(4)(b)
Automatic continuous
positioning operation By merely choosing one point table and starting operation, positioning can be
executed continuously in accordance with several point tables.
Section 5.4.2 (4)
Home position return
Dog type, count type, data setting type, stopper type, home position ignorance, dog
type rear end reference, count type front end reference, dog cradle type
Section 5.6
High-resolution encoder High-resolution encoder of 262144 pulses/rev is used as a servo motor encoder.
Absolute position detection
system By merely setting the home position once, home position return need not be done at
each power on.
Section 5.7
Gain switching function
You can switch between gains during rotation and gains during stop or use an input
device to change gains during operation.
Section 10.6
Advanced vibration
suppression control This function suppresses vibration at the arm end or residual vibration.
Section 10.4
Adaptive filter
Servo amplifier detects mechanical resonance and sets filter characteristics
automatically to suppress mechanical vibration.
Section 10.2
Low-pass filter
Suppresses high-frequency resonance which occurs as servo system response is
increased.
Section 10.5
Machine analyzer function
Analyzes the frequency characteristic of the mechanical system by simply
connecting a MR Configurator installed personal computer and servo amplifier.
MR Configurator is necessary for this function.
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
An MR Configurator installed personal computer changes gains automatically and
searches for overshoot-free gains in a short time.
MR Configurator is necessary for this function.
Robust disturbance
compensation
For roll feed axis, etc. of which a response level cannot be increased because
of the large load to motor inertia ratio, this function improves a disturbance
response.
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 servo motor stop. Parameters No.
PB24
Electronic gear
The electronic gear is used to make adjustment so that the servo amplifier setting
matches the machine moving distance. Also, changing the electronic gear value
allows the machine to be moved at any multiplication ratio to the moving distance
using the servo amplifier.
Parameter No.
PA06, PA07
Auto tuning
Automatically adjusts the gain to optimum value if load applied to the servo motor
shaft varies.
Section 9.2
S-pattern
acceleration/deceleration
time constant Acceleration/deceleration can be made smoothly.
Parameters No.
PC13
Regenerative option
Used when the built-in regenerative resistor of the servo amplifier does not have
sufficient regenerative capability for the regenerative power generated.
Section 14.2
Brake unit
Used when the regenerative option cannot provide enough regenerative power.
Can be used with the servo amplifier of 5kW or more.
Section 14.3
Regeneration converter
Used when the regenerative option cannot provide enough regenerative power.
Can be used with the servo amplifier of 5kW or more.
Section 14.4
Alarm history clear
Alarm history is cleared. Parameter No.
PC18