Mitsubishi Electric MELSERVO-J4 series Instruction Manual page 435

15. USING A DIRECT DRIVE MOTOR
(b) Magnetic pole detection by the minute position detection method
1)
2)
3)
4)
5)
6)
7)
YES
8)
Note 1. For the incremental system, the [Pr. PL01] setting is not required.
Magnetic pole detection
Check that FLS (Upper stroke limit), RLS (Lower stroke limit), and EM2 (Forced stop 2) are on, and
turn the servo amplifier power off and on again.
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 set "Magnetic pole
detection always enabled". (Note 1)
Turn the servo amplifier power off and on again.
Set the load inertia moment ratio of the direct drive motor with [Pr. PL17 Magnetic pole detection -
Minute position detection method - Function selection]. (Note 2)
Execute "Forward CCW rotation" or "Reverse rotation" with "Positioning CW operation" in the 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 of the
minute position detection method
set by [Pr. PL17] finalized?
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
Set [Pr. PL01] to "_ _ _ 0" to set "Magnetic pole detection disabled". (Note)
End
2. If the load to direct drive motor inertia 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 rotation angle at
the magnetic pole detection must be five degrees 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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