Mitsubishi Electric MELSERVO-J4 series, Instruction Manual

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15 USING A DIRECT DRIVE MOTOR
15.3 Operation and functions
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15
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Magnetic pole detection by the minute position detection method
*1 For the incremental system, the [Pr. PL01] setting is not required.
*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].
Is the travel distance
during the magnetic pole
detection acceptable? *3
Turn the servo amplifier power off and on again.
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.
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".
The magnetic pole detection is carried out.
Is the response of the
minute position detection method
set by [Pr. PL17] finalized?
Has an abnormal sound or
vibration occurred during the
magnetic pole detection?
Decrease the response by the minute
position detection method of [Pr. PL17] by
two as the final setting value.
Increase the response by the minute
position detection method of [Pr. PL17] by
one.
Not
acceptable
YES
Acceptable
NO
YES
NO
Magnetic pole detection
End
Set [Pr. PL01] to "_ _ _ 0" to set "Magnetic pole detection disabled".
*1
Check that LSP (Forward rotation stroke end), LSN (Reverse rotation stroke end), 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 (SW1-1) of the servo amplifier, and then cycle the
power of the servo amplifier.
Set [Pr. PL01 Linear servo motor/DD motor function selection 1] to "_ _ _ 1" to set "Magnetic pole
detection always enabled".
*1
Set the load inertia moment ratio of the direct drive motor with [Pr. PL17 Magnetic pole detection -
Minute position detection method - Function selection].
*2
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