Mitsubishi Electric MELSERVO-J3W Series, Instruction Manual

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13. USING A LINEAR SERVO MOTOR
13 - 23
(b) pole detection by the minimal position detection method
Does the travel distance
during the magnetic pole detection
has a problem? (Note 3)
Set parameter No.PS08 (Linear function selection 3) to " 4", and the magnetic pole detection
method to “minute position detection method”.
Turn the power of servo amplifier off once and then turn it on again. 5)
By using parameter No.PS17 (Minute position detection method function selection), set the load to
mass of the linear servo motor primary side (coil) ratio. (Note 2)
7) Execute the "Positive direction movement" or "Negative direction movement" with the "positioning
operation" of the MR Configrator test operation mode. Set the travel distance to "0" at this time.
3)
The magnetic pole detection is carried out.
Is the response of the minute
position detection method, which is set by parameter
No.PS17 (Minute position detection method
function selection), finalized?
Do abnormal sounds and
vibration occur during the magnetic
pole detection?
Lower the response of the minute position
detection method by two in parameter
No.PS17 (Minute position detection
method function selection)
Raise the response of the minute position
detection method by one in parameter
No.PS17 (Minute position detection
method function selection).
Problem
exists.
YES
Problem does not exist.
NO
YES
NO
Magnetic pole detection
End
8) Change to "Magnetic pole detection invalid" by setting the parameter No.PS01 (Linear function
selection 1) to " 0". (Note 1)
1) After confirming that the stroke limits (FLS and RLS) and the forced stop (EM1) are ON, turn the
power of servo amplifier off once and then turn it on again.
After switching the test operation select switch (SW2-1) of the servo amplifier to "Up" turn the power
of servo amplifier off once and then turn it on again. 2)
Change to "Magnetic pole detection always valid" by setting the paramete No.PS01 (Linear function
selection 1) to " 1". (Note 1)
4)
6)
Note 1. When using the incremental system, parameter No.PS01 setting is not required.
2. When the load to mass of the linear servo motor primary side (coil) ratio is unknown, detect magnetic poles with the position
detection method, perform auto tuning, and set an estimated value.
3. When detecting magnetic poles with the minute position detection method, the maximum travel distance of 0.5mm or less during
the magnetic pole detection is acceptable. To shorten the travel distance, increase the response of the minute position detection
method in parameter No.PS17 (Minute position detection method function selection).