Mitsubishi Electric MELSERVO-J5 MR-J5 Series User Manual page 388

■Position deviation error detection
Set [Pr. PL04.0 [AL. 042 Servo control error] detection function selection] to "1" to enable the position deviation error
detection.
Servo parameter
PL04.0
If the difference between the model feedback position (1) and the feedback position (2) in the figure is equal to or more than
the value of [Pr. PL05 Position deviation error detection level] (1 (0.01 rev) to 1000 (10 rev)), [AL. 042.1 Servo control error by
position deviation] will occur and the direct drive motor will stop. The initial value of this detection level is 0.09 rev. Change the
setting value as necessary.
■Speed deviation error detection
Set [Pr. PL04.0] to "2" to enable the speed deviation error detection.
Servo parameter
PL04.0
If the difference between the model feedback speed (3) and the feedback speed (4) in the figure is equal to or more than the
value of [Pr. PL06 Speed deviation error detection level] (1 r/min to 2000 r/min), [AL. 042.2 Servo control error by speed
deviation] will occur and the direct drive motor will stop. The initial value of this detection level is 100 r/min. Change the setting
value as necessary.
■Torque deviation error detection
Set [Pr. PL04.0] to "4" to enable torque deviation error detection.
Servo parameter
PL04.0
If the difference between the command torque (5) and the feedback torque (6) in the figure is equal to or more than the value
of [Pr. PL07 Torque/thrust deviation error detection level] (1 % to 1000 %), [AL. 042.3 Servo control error by torque/thrust
deviation] will occur and the direct drive motor will stop. The initial value of this detection level is 100 %. Change the setting
value as necessary.
■Detecting multiple deviation errors
When [Pr. PL04.0] is set as follows, multiple deviation errors can be detected. Refer to the following for the error detection
method.
Page 386 Position deviation error detection
Page 386 Speed deviation error detection
Page 386 Torque deviation error detection
• [Pr. PL04.0 [AL. 042 Servo control error] detection function selection]
Setting value Position deviation error detection

1

2
3 

4
5 

6

7
Initial value: 3
11 USING A DIRECT DRIVE MOTOR
386
11.4 Basic functions
Description
[AL. 042 Servo control error] detection function selection
1: Position deviation error detection enabled
Description
[AL. 042 Servo control error] detection function selection
2: Speed deviation error detection enabled
Description
[AL. 042 Servo control error] detection function selection
4: Torque deviation error detection enabled
Speed deviation error detection







Torque deviation error detection






