Mitsubishi Electric MELSERVO-J4 series Instruction Manual page 407

14. USING A LINEAR SERVO MOTOR
(b) Magnetic pole detection by the minute position detection method
1) Check that FLS (Upper stroke limit), RLS (Lower stroke limit), and EM2 (Forced stop 2) are on, and
2)
3)
4)
5)
6) With [Pr. PL17 Magnetic pole detection - Minute position detection method - Function selection],
7) Execute "Positive direction travel" or "Negative direction travel" with "Positioning operation" in the
YES
8) Set [Pr. PL01] to "_ _ _ 0" to set "Magnetic pole detection disabled". (Note 1)
Note 1. When the linear encoder is an incremental type, the [Pr. PL01] setting is not required.
Magnetic pole detection
then cycle the servo amplifier power.
Turn "On (up)" the test operation select switch (SW2-1) of the servo amplifier, and then cycle the
power of the servo amplifier.
Set [Pr. PL08 Linear servo motor/DD motor function selection 3] to "_ _ _ 4" to set the magnetic
pole detection method to "Minute position detection method".
Set [Pr. PL01 Linear servo motor/DD motor function selection 1] to "_ _ _ 1" to enable "Magnetic
pole detection at first servo-on". (Note 1)
Cycle the servo amplifier power.
set the load to mass of the linear servo motor primary-side ratio. (Note 2)
test operation mode on MR Configurator2. Set the travel distance to "0" at this time.
The magnetic pole detection is carried out.
Is the response by the
minute position detection method of
[Pr. PL17] the final value?
NO
Has an abnormal sound or
vibration occurred during the
magnetic pole detection?
NO
Is the travel distance during
the magnetic pole detection
acceptable? (Note 3)
Acceptable
End
2. If the load to primary-side linear servo motor mass 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
response by the minute position detection method in [Pr. PL17].
Decrease the response by the minute
YES
position detection method of [Pr. PL17] by
two as the final setting value.
Not
Increase the response by the minute
acceptable
position detection method of [Pr. PL17] by
one.
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