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11 USING A DIRECT DRIVE MOTOR
11.4 Basic functions
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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.
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.
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Speed deviation error detection
Set [Pr. PL04.0] to "2" to enable the speed deviation error detection.
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.
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Torque deviation error detection
Set [Pr. PL04.0] to "4" to enable torque deviation error detection.
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.
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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]
Initial value: 3
Servo parameter
Description
PL04.0
[AL. 042 Servo control error] detection function selection
1: Position deviation error detection enabled
Servo parameter
Description
PL04.0
[AL. 042 Servo control error] detection function selection
2: Speed deviation error detection enabled
Servo parameter
Description
PL04.0
[AL. 042 Servo control error] detection function selection
4: Torque deviation error detection enabled
Setting value
Position deviation error detection
Speed deviation error detection
Torque deviation error detection
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2
3
4
5
6
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Summary of Contents for Melservo-J5 MR-J5 Series
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Page 441: ...12 USING A FULLY CLOSED LOOP SYSTEM 12 7 Absolute position detection system 439 12 MEMO ...
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