Magnetic Pole Detection - Mitsubishi Electric MR-J4-10B(-RJ) Instruction Manual

14. USING A LINEAR SERVO MOTOR

14.3.2 Magnetic pole detection

Before the positioning operation of the linear servo motor, make sure to perform the magnetic pole detection.
When [Pr. PL01] is set to the initial value, perform the magnetic pole detection only at the first servo-on after
the power is turned on.
The magnetic pole detection includes the following two methods. Each method has advantages and
disadvantages. Select a magnetic pole detection method suitable for your usage.
The position detection method is selected in the initial setting.
Magnetic pole detection
Position detection method
Minute position detection method
POINT
Set [Pr. PE47 Torque offset] to "0 (initial value)" before executing the magnetic
pole detection.
1. The magnetic pole detection has a
high degree of accuracy.
2. The adjustment procedure at the
magnetic pole detection is simple.
1. The travel distance at the
magnetic pole detection is small.
2. Even for equipment with small
friction, the magnetic pole
detection is available.
Advantage
14 - 11
Disadvantage
1. The travel distance at the
magnetic pole detection is large.
2. For equipment with small friction,
the initial magnetic pole detection
error may occur.
1. The adjustment procedure at the
magnetic pole detection is
complex.
2. If a disturbance occurs during the
magnetic pole detection, [AL. 27
Initial magnetic pole detection
error] may occur.