Selecting Procedure Of Control Mode - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

The following table shows the functions of each control mode.
Control
Semi closed loop control
Dual feedback control
Fully closed loop control

Selecting procedure of control mode

Control mode configuration
In this servo, a semi closed loop system or fully closed loop system can be selected as a control system.
In addition, on the fully closed loop system, the semi closed loop control, fully closed loop control and dual feedback control
can be selected by the [Pr. PE08] settings.
Operation mode selection
Servo amplifier
(Refer to section 16.3.1 (2) (a))
16 FULLY CLOSED LOOP SYSTEM
514
16.1 Functions and configuration
Description
Feature Position is controlled according to the servo motor-side data.
Advantage Since this control is insusceptible to machine influence (such as machine resonance), the gains of the servo
amplifier can be raised and the settling time shortened.
Disadvantage If the servo motor side is at a stop, the side may be vibrating or the load-side accuracy not obtained.
Feature Position is controlled according to the servo motor-side data and load-side data.
Advantage Control is performed according to the servo motor-side data during operation, and according to the load side-
data at a stop in sequence to raise the gains during operation and shorten the settling time. A stop is made with
the load-side accuracy.
Feature Position is controlled according to the load-side data.
Advantage The load-side accuracy is obtained not only at a stop but also during operation.
Disadvantage Since this control is susceptible to machine resonance or other influences, the gains of the servo amplifier may
not rise.
([Pr. PA01])
"_ _ 0 _"
"_ _ 1 _"
Fully closed loop
function selection 1
([Pr. PE01])
(Refer to section 16.3.1 (2) (b))
Semi closed/fully closed switching command
OFF
ON
Fully closed loop
"_ _ _ 1"
dual feedback filter
([Pr. PE08])
"_ _ _ 0"
Semi closed loop system
Semi closed
loop control
Fully closed loop system
Semi closed
loop control
"1 to 4499"
Dual feedback
control
"4500"
Fully closed
loop control