Mitsubishi Electric Melservo-Jet MR-JET G-N1 Series, Руководство пользователя

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8 USING A LINEAR SERVO MOTOR
8.2 Startup
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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].
Preparation for magnetic pole detection
For the magnetic pole detection, use the test operation mode (positioning operation) of MR Configurator2. Set [Pr. PC05.1
Test operation selection] to "1" to enable the test operation mode. Once the parameter has been set, cycle the power to
enable 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
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).
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 parameter Description
PL08.2 Magnetic pole detection - Stroke limit enabled/disabled selection
0: Enabled
1: Disabled
Initial value: 0 (enabled)
Servo parameter Description
PL08.0 Magnetic pole detection method selection
0: Position detection method
4: Minute position detection method
Initial value: 0 (position detection method)
Servo parameter Description
PL01.0 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)
Servo status Small ← Medium → Large
(10 or less (initial value) 50 or more)
Thrust at operation Small Large
Overload, overcurrent alarm Hardly occurs Easily occurs
Magnetic pole detection alarm Easily occurs Hardly occurs
Magnetic pole detection accuracy Low High