11 USING A DIRECT DRIVE MOTOR
11.2 Startup [G] [WG]
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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 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 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. Turn off the servo
amplifier power, and turn on the DIP switch (SW3-1). Turning on the power enables 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 detection system, 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).
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)
Summary of Contents for Melservo-J5 MR-J5 Series
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