Mitsubishi Electric MELSERVO-J3 Series Handbook page 174

Part 4: Replacement of MR-J3W-_B with MR-J4W2-_B
No. Name and function
PA15 Encoder output pulses
Encoder output pulses 2
Turn off the power and then on again, or reset the
controller after setting the parameter to validate the
parameter value.
Used to set the encoder pulses (A/B-phase) output by the
servo amplifier.
Set the value 4 times greater than the A-phase or B-
phase pulses.
You can use [Pr. PC03] to choose the output pulse
setting or output division ratio setting.
The number of A/B-phase pulses actually output is 1/4
times greater than the preset number of pulses.
The maximum output frequency is 4.6 Mpulses/s (after
multiplication by 4). Use this parameter within this range.
(1) For output pulse designation
Set "_ _ 0_" in [Pr. PC03].
Set the number of pulses per servo motor revolution.
Output pulse = set value [pulse/rev]
For instance, set "5600" to [Pr. PA15], the actually
output A/B-phase pulses are as indicated below.
A /B -p ha se o u tp ut pu lse s
(2) For output division ratio setting
Set "_ _ 1_" in [Pr. PC03].
The number of pulses per servo motor revolution is
divided by the set value.
Resolution per servo motor revolution
Output pulse
For instance, set "8" to [Pr. PA15], the actually
output A/B-phase pulses are as indicated below.
A/B-phase output pulses
PA16
(3) A/B-phase pulse electronic gear setting
This parameter is made valid when [Pr. PC03] is set to
"_ _ 3_".
Set the encoder pulses (A/B-phase) output by the
servo amplifier.
Set the encoder pulses output by the servo amplifier
by [Pr. PA15] and [Pr. PA16].
Travel distance [pulse] of the linear encoder is
multiplied by the set value.
Output pulse = Travel distance of linear encoder ×
The number of A/B-phase pulses actually output is
1/4 times greater than the preset number of pulses.
Also, the maximum output frequency is 4.6 Mpulses/s
(after multiplication by 4). Use this parameter within
the range.
When the set value is "0 (factory setting)", it is
internally treated as "1".
MR-J3W-_B
5 60 0
14 0 0 [pu ls e ]
4
[pulses/rev]
Set value
262144 1
8192 [p ulse]
8 4
[Pr. PA15]
[pulse]
[Pr. PA16]
Initial
No.
value
4000 PA15 Encoder output pulses
Set the encoder output pulses from the servo amplifier by
using the number of output pulses per revolution, dividing
ratio, or electronic gear ratio. (after multiplication by 4)
Set a numerator of the electronic gear, for when selecting
"A-phase/B-phase pulse electronic gear setting (_ _ 3 _)"
of "Encoder output pulse setting selection" in [Pr. PC03].
The maximum output frequency is 4.6 Mpulses/s. Set the
parameter within this range.
0 PA16 Encoder output pulses 2
Set a denominator of the electronic gear for the A/B-
phase pulse output. Set a denominator of the electronic
gear, for when selecting "A-phase/B-phase pulse
electronic gear setting (_ _ 3 _)" of "Encoder output pulse
setting selection" in [Pr. PC03].
4 - 29
MR-J4W2-_B
Name and function
Initial
value
4000
1