Mitsubishi Electric MR-JE-_A Instruction Manual page 157

5. PARAMETERS
No./symbol/ Setting
name digit
PB03 Set the constant of a primary delay to the position command.
PST You can select a control method from "Primary delay" or "Linear
acceleration/deceleration" of "Position acceleration/deceleration filter type selection"
Position
in [Pr. PB25]. The setting range of "Linear acceleration/deceleration" is 0 ms to 10
command
ms. Setting of longer than 10 ms will be recognized as 10 ms.
acceleration/
deceleration When the linear acceleration/deceleration is selected, do not set the "Control mode
time constant selection" ([Pr. PA01]) to the setting other than "_ _ _ 0". Doing so will cause the
(position servo motor to make a sudden stop at the time of position control mode switching.
smoothing)
(Example) When a command is given from a synchronizing encoder, synchronous
Setting range: 0 to 65535
PB04 Set the feed forward gain.
FFC When the setting is 100%, the droop pulses during operation at constant speed are
nearly zero. However, sudden acceleration/deceleration will increase the overshoot.
Feed forward
As a guideline, when the feed forward gain setting is 100%, set 1 s or more as the
gain
acceleration time constant up to the rated speed.
Setting range: 0 to 100
PB06 Set the load to motor inertia ratio.
GD2 Setting a value considerably different from the actual load moment of inertia may
cause an unexpected operation such as an overshoot.
Load to motor
inertia ratio The setting of the parameter will be the automatic setting or manual setting
depending on the [Pr. PA08] setting. Refer to the following table for details. When
the parameter is automatic setting, the value will vary between 0.00 and 100.00.
Setting range: 0.00 to 300.00
_ _ _ 0 (2 gain adjustment mode 1
(interpolation mode)
_ _ _ 1: (Auto tuning mode 1)
_ _ _ 2: (Auto tuning mode 2)
_ _ _ 3: (Manual mode)
_ _ _ 4: (2 gain adjustment mode 2)
operation will start smoothly even if it start during line operation.
Start
Without time
constant setting
Servo motor
speed
ON
OFF
Start
Pr. PA08
Function
Synchronizing
encoder
Servo motor
Servo amplifier
With time
constant setting
t
This parameter
Automatic setting
Manual setting
5 - 18
Initial
Control mode
value
P S T
[unit]
0
[ms]
0
[%]
7.00
[Multiplier]