Mitsubishi Electric MELSERVO-J5 User Manual page 354
Ac servo system
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Also See for MELSERVO-J5:
- User manual (580 pages) ,
- Sample screen manual (128 pages) ,
- Introduction manual (112 pages)
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*1 For the incremental system, the setting of [Pr. PL01] is not required.
*2 If the load to mass of the linear servo motor primary-side ratio is unknown, perform the magnetic pole detection by the position detection
method, and then perform the auto tuning to set an estimated value.
*3 For the magnetic pole detection by the minute position detection method, the maximum travel distance at the magnetic pole detection
must be 0.5 mm or less. To shorten the travel distance, increase the value of [Pr. PL17.0].
Stroke limit disabled setting at magnetic pole detection
When performing a magnetic pole detection without LSP (Forward rotation stroke end) and LSN (Reverse rotation stroke
end), set [Pr. PL08.2 Magnetic pole detection - Stroke limit enabled/disabled selection].
Servo parameter
PL08.2
Preparation for magnetic pole detection
For the magnetic pole detection, use the test operation mode (positioning operation) of MR Configurator2. Turn off the servo
amplifier power, and turn on the DIP switch (SW3-1). Turning on the power enables the test operation mode.
Magnetic pole detection method setting
Set the magnetic pole detection method by using [Pr. PL08.0 Magnetic pole detection method selection].
In the following cases, set the magnetic pole detection method to the minute position detection method.
• When a shortened travel distance at the magnetic pole detection is required
• When the magnetic pole detection by the position detection method is not completed properly
Servo parameter
PL08.0
For an absolute position linear encoder, set [Pr. PL01.0 Servo motor magnetic pole detection selection] to "1" (magnetic pole
detection at initial servo-on after cycling the power). After the completion of the magnetic pole detection, change [Pr. PL01.0]
to "0" (magnetic pole detection disabled).
Servo parameter
PL01.0
Setting of magnetic pole detection voltage level by position detection method
For magnetic pole detection using the position detection method, set the voltage level with [Pr. PL09 Magnetic pole detection
- Voltage level]. For the magnetic pole detection by the minute position detection method, the voltage level setting is not
required.
■Guideline of servo parameter setting
Set the parameters by referring to the following table.
Servo status
Thrust at operation
Overload, overcurrent alarm
Magnetic pole detection alarm
Magnetic pole detection accuracy
10 USING A LINEAR SERVO MOTOR
352
10.2 Startup [G] [WG]
Description
Magnetic pole detection - Stroke limit enabled/disabled selection
0: Enabled
1: Disabled
Initial value: 0 (enabled)
Description
Magnetic pole detection method selection
0: Position detection method
4: Minute position detection method
Initial value: 0 (position detection method)
Description
Servo motor magnetic pole detection selection
0: Magnetic pole detection disabled
1: Magnetic pole detection at initial servo-on after cycling the power
5: Magnetic pole detection at every servo-on
Initial value: 1 (magnetic pole detection at initial servo-on after cycling the power)
Small ← Medium → Large
(10 or less (initial value) 50 or more)
Small
Hardly occurs
Easily occurs
Low
Large
Easily occurs
Hardly occurs
High
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