Справочник Пользователя для Mitsubishi Electronics MR-J3-B-RJ080W

4. OPERATION AND FUNCTIONS 

4 -  4 

 
(1)  For the incremental system 

For the incremental system, the magnetic pole detection is required every time the power is turned on. By 
turning on the servo-on command from the controller after the power-on, the magnetic pole detection is 
automatically carried out. Therefore, there is no need to set the parameters (first digit of parameter No. 
PS01) for executing the magnetic pole detection. 

 

(a) Timing chart 

ON
OFF

ON
OFF

ON
OFF

95ms

Servo-on command

Base circuit

Ready (RD)

15s or less

Magnetic pole detection time (Note)

 

Note. The magnetic pole detection time indicates the operation time when the stroke limits 

(FLS and RLS) is on. 

 

(b)  Direct drive motor movement (when FLS and RLS are on) 

Magnetic pole detection complete position

Servo-on position (Magnetic pole detection start position)

Center of direct drive motor rotation part

FLS (Note)

(Note) RLS

10deg or less

 

Note. When the stroke limit (FLS and RLS) turns off during the magnetic pole detection, the 

operation of magnetic pole detection is carried on to the opposite direction. When both 
FLS and RLS are off, the magnetic pole detection error (27) occurs. 

 

(c)  Direct drive motor movement (when FLS and RLS is off) 

When the FLS and RLS are off at the servo-on, the magnetic pole detection is carried out as follows. 

Magnetic pole detection complete position

After the machine moves to the position where the stroke 

limit (FLS and RLS) is set, the magnetic pole detection 

starts.

Center of direct drive motor rotation part

10deg or less

Magnetic pole detection 

start position

Servo-on position

FLS

RLS