16. FULLY CLOSED LOOP SYSTEM
16 - 19
16.3.4 Fully closed loop control error detection functions
If fully closed loop control becomes unstable for some reason, the speed at servo motor side may increase
abnormally. The fully closed loop control error detection function is a protective function designed to pre-
detect it and stop operation.
The fully closed loop control error detection function has two different detection methods, speed deviation
and position deviation, and errors are detected only when the corresponding functions are enabled by setting
[Pr. PE03 Fully closed loop function selection 2].
The detection level setting can be changed using [Pr. PE06] and [Pr. PE07].
(1) Parameter
Select the fully closed loop control error detection function.
Fully closed loop control error detection function
0: Disabled
1: Speed deviation error detection
2: Position deviation error detection
3: Speed deviation error, position deviation error detection
(Initial value)
[Pr. PE03]
(2) Fully closed loop control error detection functions
Servo motor
Linear encoder
1) Servo motor-side feedback speed [r/min]
2) Servo motor-side feedback position [pulse]
(load side equivalent value)
3) Load-side feedback speed [r/min]
4) Load-side feedback position [pulse]
(a) Speed deviation error detection
Set [Pr. PE03] to "_ _ _ 1" to enable the speed deviation error detection.
Speed deviation error detection
1
[Pr. PE03]
The function compares the servo motor-side feedback speed (1)) and load-side feedback speed (3)).
If the deviation is not less than the set value (1 r/min to the permissible speed) of [Pr. PE06 Fully
closed loop control speed deviation error detection level], the function generates [AL. 42.2 Servo
control error by speed deviation] and stops. The initial value of [Pr. PE06] is 400 r/min. Change the
set value as required.
Summary of Contents for MR-J4W2-0303B6
Page 39: ...2 INSTALLATION 2 8 MEMO ...
Page 97: ...4 STARTUP 4 20 MEMO ...
Page 181: ...6 NORMAL GAIN ADJUSTMENT 6 28 MEMO ...
Page 235: ...9 DIMENSIONS 9 6 MEMO ...
Page 245: ...10 CHARACTERISTICS 10 10 MEMO ...
Page 309: ...13 USING STO FUNCTION 13 14 MEMO ...
Page 365: ...15 USING A DIRECT DRIVE MOTOR 15 24 MEMO ...
Page 389: ...16 FULLY CLOSED LOOP SYSTEM 16 24 MEMO ...
Page 461: ...17 APPLICATION OF FUNCTIONS 17 72 MEMO ...
Page 556: ...APPENDIX App 41 ...
Page 585: ...MEMO ...