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5. PARAMETERS
5 - 27
No./symbol/
name
Setting
digit
Function
Initial
value
[unit]
Control
mode
P S T
PB03
PST
Position
command
acceleration/
deceleration
time constant
(position
smoothing)
Set the constant of a primary delay to the position command.
You can select a control method from "Primary delay" or "Linear
acceleration/deceleration" of "Position acceleration/deceleration filter type selection"
in [Pr. PB25]. When the linear acceleration/deceleration is selected, the setting
range is 0 ms to 10 ms. Setting of longer than 10 ms will be recognized as 10 ms.
When the linear acceleration/deceleration is selected, do not set the "Control mode
selection" ([Pr. PA01]) to the setting other than "_ _ _ 0". Doing so will cause the
servo motor or linear servo motor to make a sudden stop at the time of position
control mode switching or restart.
(Example) When a command is given from a synchronizing encoder, synchronous
operation will start smoothly even if it start during line operation.
Synchronizing
encoder
Start
Servo motor
Servo amplifier
ON
OFF
With time
constant setting
Without time
constant setting
Servo motor
speed
Start
t
Setting range: 0 to 65535
0
[ms]
PB04
FFC
Feed forward
gain
Set the feed forward gain.
When the setting is 100%, the droop pulses during operation at constant speed are
nearly zero. When the super trace control is enabled, constant speed and uniform
acceleration/deceleration droop pulses will be almost 0. However, sudden
acceleration/deceleration will increase the overshoot. As a guideline, when the feed
forward gain setting is 100%, set 1 s or more as the acceleration time constant up to
the rated speed.
Setting range: 0 to 100
0
[%]
Summary of Contents for MR-J4-100A(-RJ)
Page 19: ...10 MEMO ...
Page 75: ...1 FUNCTIONS AND CONFIGURATION 1 56 MEMO ...
Page 83: ...2 INSTALLATION 2 8 MEMO ...
Page 159: ...3 SIGNALS AND WIRING 3 76 MEMO ...
Page 203: ...4 STARTUP 4 44 MEMO ...
Page 351: ...7 SPECIAL ADJUSTMENT FUNCTIONS 7 40 MEMO ...
Page 365: ...8 TROUBLESHOOTING 8 14 MEMO ...
Page 387: ...9 DIMENSIONS 9 22 MEMO ...
Page 403: ...10 CHARACTERISTICS 10 16 MEMO ...
Page 553: ...12 ABSOLUTE POSITION DETECTION SYSTEM 12 30 MEMO ...
Page 567: ...13 USING STO FUNCTION 13 14 MEMO ...
Page 607: ...14 COMMUNICATION FUNCTION MITSUBISHI ELECTRIC GENERAL PURPOSE AC SERVO PROTOCOL 14 40 MEMO ...
Page 639: ...15 USING A LINEAR SERVO MOTOR 15 32 MEMO ...
Page 767: ...18 MR J4 03A6 RJ SERVO AMPLIFIER 18 84 MEMO ...
Page 856: ...APPENDIX App 41 ...
Page 905: ...MEMO ...