Filter
Top Products
16. FULLY CLOSED LOOP SYSTEM
16 - 19
16.3.3 Operation from controller
The fully closed loop control compatible servo amplifier can be used with any of the following controllers.
Category Model Remarks
Motion controller R_MTCPU/Q17_DSCPU
Speed control (II) instructions (VVF and VVR) cannot
be used.
Simple motion module RD77MS_/QD77MS_
An absolute type linear encoder is necessary to configure an absolute position detection system under fully
closed loop control using a linear encoder. In this case, the encoder battery need not be installed to the
servo amplifier. When an rotary encoder is used, an absolute position detection system can be configured by
installing the encoder battery to the servo amplifier. In this case, the battery life will be shorter because the
power consumption is increased as the power is supplied to the two encoders of motor side and load side.
(1) Operation from controller
Positioning operation from the controller is basically performed like the semi closed loop control.
(2) Servo system controller setting
When using fully closed loop system, make the following setting.
[Pr. PA01], [Pr. PC17], [Pr. PE01], [Pr. PE03] to [Pr. PE05], [Pr. PE34] and [Pr. PE35] are written to the
servo amplifier and then are enabled using any of the methods indicated by ○ in Parameter enabled
conditions. [Pr. PE06] to [Pr. PE08] are enabled at setting regardless of the valid conditions.
Setting item
Parameter enabled
conditions
Settings
Controller
reset
Power
supply
Off→on
Motion
controller
R_MTCPU/
Q17_DSCPU
Simple motion
module
RD77MS_/
QD77MS_
Command
resolution
Load-side encoder resolution
unit
Servo
parameter
MR-J4-B fully closed loop servo amplifier setting MR-J4-B(-RJ) fully closed loop
control
Motor setting Automatic setting
Home position setting condition selection ([Pr. PC17])
Set the items as required.
Fully closed loop selection ([Pr. PA01] and [Pr. PE01])
Fully closed loop selection 2 ([Pr. PE03])
Fully closed loop control error detection speed deviation
error detection level
([Pr. PE06])
Enabled at setting
regardless of the
enabled conditions
Fully closed loop control error detection position
deviation error detection level
([Pr. PE07])
Fully closed loop electronic gear numerator ([Pr. PE04]
and [Pr. PE34])
Fully closed loop electronic gear denominator ([Pr. PE05]
and [Pr. PE35])
Fully closed loop dual feedback filter ([Pr. PE08]) Enabled at setting
regardless of the
enabled conditions
Positioning
control
parameter
Unit setting mm/inch/degree/pulse
Number of pulses per revolution (AP)
Travel distance per revolution (AL)
For the setting methods, refer to (2) (a), (b) in this section.