Important Points For Replacement - Mitsubishi Electric MELSERVO-J4 Series Transition Handbook

Part 2: Review on Replacement of MR-J3-_A_ with MR-J4-_A_

3.6 Important Points for Replacement

1. SUMMARY
This section describes the precautions for setting parameters for the replacement of MR-J3-_A_ with MR-J4-
_A_
2. Precautions
We recommend that you use the parameter converter function (supported from version 1.12N or later) of MR
Configurator2 for the replacement of MR-J3-_A_ with MR-J4-_A_. The following describes the parameters
that are easily missed when the parameter setting is manually changed.
(1) Command input pulse train filter selection (_ x _ _) of [Pr. PA13 Command pulse input form]
As compared to MR-J3-_A_, the command input pulse train filter selection is added in [Pr.PA13] of MR-
J4-_A_. Do not set "0h" for the command input pulse train filter selection when changing the command
input pulse train form selection and pulse train logic selection. Setting "0h" for the command input pulse
train filter selection enables the command input of up to 4 Mpulses/s but reduces the noise filter ability.
No./symbol/ Setting
name digit
PA13 _ _ _ x
*PLSS
Command pulse
input form
_ _ x _
_ x _ _
x _ _ _
POINT
Set "pulse train form" of the pulse output function correctly.
Command input pulse train form selection
0: Forward/reverse rotation pulse train
1: Signed pulse train
2: A-phase/B-phase pulse train
Pulse train logic selection
0: Positive logic
1: Negative logic
Command input pulse train filter selection
Selecting proper filter enables to enhance noise tolerance.
0: Command input pulse train is 4 Mpulses/s or less.
1: Command input pulse train is 1 Mpulse/s or less.
2: Command input pulse train is 500 kpulses/s or less.
3: Command input pulse train is 200 kpulses/s or less (available for the
software version A5 or later)
1 Mpulse/s or lower commands are supported by "1". When inputting
commands over 1 Mpulse/s and 4 Mpulses/s or lower, set "0".
For manufacturer setting
Function
2 - 64
Control mode
Initial
(:Enabled)
value
[unit]
P S T
0h
0h
1h
0h