Mitsumi electronic MR-J3- A Manual De Usuario

 

 

4 -  14 

4. STARTUP 

 

No.  Start-up sequence 

Fault 

Investigation 

Possible cause 

Reference 

4 

Gain adjustment 

Rotation ripples 
(speed fluctuations) 
are large at low 
speed. 

Make gain adjustment in the 
following procedure. 

Increase the auto tuning response 

level. 

Repeat acceleration and 

deceleration several times to 
complete auto tuning. 

Gain adjustment fault 

Chapter 7 

Large load inertia 
moment causes the 
servo motor shaft to 
oscillate side to 
side. 

If the servo motor may be run with 
safety, repeat acceleration and 
deceleration several times to 
complete auto tuning. 

Gain adjustment fault 

Chapter 7 

 
4.4 Startup in torque control mode 

Make a startup in accordance with section 4.1. This section provides the methods specific to the torque control 
mode. 
 
4.4.1 Power on and off procedures 

(1) Power-on 

Switch power on in the following procedure. Always follow this procedure at power-on. 

 

1) Switch off the servo-on (SON). 

 

2) Make sure that the Forward rotation selection (RS1) and Reverse rotation selection (RS2) are off. 

 

3) Switch on the main circuit power supply and control circuit power supply. 

At power-on, "88888" appears instantaneously, but it is not an error. 
When main circuit power/control circuit power is switched on, the display shows "U (torque command 
voltage)", and in two second later, shows data. 

 

(2) Power-off 

1) Switch off the Forward rotation selection (RS1) or Reverse rotation selection (RS2). 

 

2) Switch off the Servo-on (SON). 

 

3) Switch off the main circuit power supply and control circuit power supply.