Mitsumi electronic MR-J3- A Manual De Usuario

 

 

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3. SIGNALS AND WIRING 

 
3.6.2 Speed control mode 

(1) Speed setting 

(a) Speed command and speed 

The servo motor is run at the speeds set in the parameters or at the speed set in the applied voltage of 
the analog speed command (VC). A relationship between the analog speed command (VC) applied 
voltage and the servo motor speed is shown below. 
Rated speed is achieved at  10V with initial setting. The speed at  10V can be changed using 
parameter No.PC12. 

Forward rotation (CCW)

Reverse rotation (CW)

-10

Rated speed [r/min]

CCW direction

0

+10

VC applied voltage [V]

CW direction

Rated speed

Speed [r/min]

 

The following table indicates the rotation direction according to forward rotation start (ST1) and reverse 
rotation start (ST2) combination. 

 

(Note 1) Input device 

(Note 2) Rotation direction 

ST2 

ST1 

Analog speed command (VC) 

Internal speed 

commands 

 Polarity 

0V 

Polarity 

0 

0 

Stop 

(Servo lock) 

Stop 

(Servo lock) 

Stop 

(Servo lock) 

Stop 

(Servo lock) 

0 

1 

CCW 

Stop 

(No servo lock) 

CW 

CCW 

1 

0 

CW 

CCW 

CW 

1 

1 

Stop 

(Servo lock) 

Stop 

(Servo lock) 

Stop 

(Servo lock) 

Stop 

(Servo lock) 

Note 1. 0: off  

1: on  

2. If the torque limit is canceled during servo lock, the servo motor may suddenly rotate according to position deviation in respect 

to the command position. 

 

Generally, make connection as shown below. 

ST2

DOCOM

P15R

VC
LG
SD

ST1

Japan resistor
RRS10 or equivalent

(Note)

2k

2k

Servo amplifier

 

Note. For the sink I/O interface. For the source I/O interface, refer to section 3.8.3.