3. SIGNALS AND WIRING

3.4Detailed description of the signals 3.4.1 Position control mode

(1)Pulse train input

(a)Input pulse waveform selection

Encoder pulses may be input in any of three different forms, for which positive or negative logic can be chosen. Set the command pulse train form in parameter No. 21.

Arrow or in the table indicates the timing of importing a pulse train. A- and B-phase pulse trains are imported after they have been multiplied by 4.

Negative logic

Positive logic

Pulse train form

Forward rotation

Reverse rotation

Parameter No. 21

 

command

command

(Command pulse train)

 

 

 

Forward rotation

PP

 

 

 

pulse train

 

 

 

 

0010

Reverse rotation

 

 

 

NP

 

 

 

pulse train

 

 

 

 

 

 

 

 

 

 

 

PP

 

 

 

Pulse train

sign

 

 

 

0011

 

 

NP

L

H

 

 

 

 

 

 

 

 

PP

 

 

 

A-phase pulse train

 

 

 

0012

B-phase pulse train

 

 

 

 

 

 

 

 

 

NP

 

 

 

Forward rotation

PP

 

 

 

pulse train

 

 

 

 

 

 

 

 

0000

Reverse rotation

 

 

 

NP

 

 

 

pulse train

 

 

 

 

 

 

 

 

 

 

 

PP

 

 

 

Pulse train

sign

NP

 

 

0001

 

 

H

L

 

 

 

 

 

 

 

PP

 

 

 

A-phase pulse train

 

 

 

0002

B-phase pulse train

 

 

 

NP

 

 

 

 

 

 

 

 

3 - 23

Page 56
Image 56
Mitsubishi Electronics MR-J2S- A instruction manual Negative logic Positive logic