Important Points For Replacement (Command Pulse Logic Settings) - Mitsubishi Electric MELSERVO-J2S Series Transition Handbook

Part 2: Review on Replacement of MR-J2S-_A_ with MR-J4-_A_

3.7 Important Points for Replacement (Command Pulse Logic Settings)

When carrying out positioning in the forward and reserve rotation pulse train setting for the MR-J4-_A_ servo
amplifier, it is necessary to adjust the command pulse logic of the positioning module to that of the servo
amplifier. Set as follows. This adjustment is unnecessary for a pulse train + symbol and an A-phase/B-phase
pulse train.
CAUTION
(1) For A-series positioning modules
Signal type
Open-collector type
Differential line driver type
Note 1. When a pulse train + symbol and an A-phase/B-phase pulse train are used, it is unnecessary to adjust the logics.
2. For A-series and Q-series positioning modules, this logic points to the N-side waveform. Therefore, reverse the
command pulse logic of the servo amplifier.
(2) For Q-series positioning modules
Signal type
Open-collector type
Differential line driver type
Note 1. When a pulse train + symbol and an A-phase/B-phase pulse train are used, it is unnecessary to adjust the logics.
2. For A-series and Q-series positioning modules, this logic points to the N-side waveform. Therefore, reverse the
command pulse logic of the servo amplifier.
(3) For F-series positioning modules
Signal type
Open-collector type
Even though the command pulse logic of the existing MR-J2S-_A_ servo amplifier
is not the same as its positioning module, the servo motor will rotate, but in the
MR-J4-_A_ servo amplifier, when the logics are not set correctly, the servo motor
will not rotate normally. Make sure to check the information below to set the
logics. Even when another company's controller is used, check the logic setting.
A-series positioning module
Basic parameter 1 setting
Positive logic
Positive logic (Note 2)
Q-series positioning module
[Pr. 23] setting
Positive logic
Negative logic
Positive logic (Note 2)
Negative logic (Note 2)
F-series positioning module
Negative logic
Command pulse logic setting (Note 1)
Command pulse logic setting (Note 1)
Command pulse logic setting
(fixed)
2 - 45
MR-J4-_A_ servo amplifier
[Pr. PA13] setting
Positive logic (_ _ 0 _ h)
Negative logic (_ _ 1 _ h)
MR-J4-_A_ servo amplifier
[Pr. PA13] setting
Positive logic (_ _ 0 _ h)
Negative logic (_ _ 1 _ h)
Negative logic (_ _ 1 _ h)
Positive logic (_ _ 0 _ h)
MR-J4-_A_ servo amplifier
[Pr. PA13] setting
Negative logic (_ _ 1 _ h)