Mitsubishi Electric MELSERVO-J2S Series Transition Handbook page 58

Part 2: Review on Replacement of MR-J2S-_A_ with MR-J4-_A_
MR-J2S-_A_
No. Name and function
19 Parameter writing inhibit
Used to select the reference range and writing range of
parameters.
20 Function selection 2
Used to select whether to execute a restart after
instantaneous power failure, servo-lock when the speed
control mode stops, and slight vibration suppression
control.
0
Restart after instantaneous power
failure selection
If the power supply voltage has
returned to normal after an
undervoltage status caused by the
reduction of the input power supply
voltage in the speed control mode,
the servo motor can be restarted by
merely turning on the start signal
without resetting the alarm.
0: Disabled (Undervoltage alarm
1: Enabled
Servo-lock selection at speed control
stop
In the speed control mode, the servo
motor shaft can be locked to prevent
the shaft from being moved by an
external force.
0: Enabled (servo-lock)
1: Disabled (no servo-lock)
Slight vibration suppression control
It will become effective if the auto
tuning selection is set as "0400" by
parameter No.2. Used to curb
vibration at the time of stop.
0: Disabled
1: Enabled
PA19
Other than
the below
000Ah
000Bh
000Ch
00AAh
(initial value)
00ABh
100Bh
100Ch
10AAh
10ABh
(AL. 10) occurs.)
The operation to maintain the
stop position is performed.
The stop position is not
maintained. The control to make
the speed 0 r/min is performed.
Table: The setting values of [Pr. PA19] and the accessible parameters
Permissions PA
Read
Write
Read Only 19
Write Only 19
Read
Write
Read
Write
Read
Write
Read
Write
Read
Write Only 19
Read
Write Only 19
Read
Write Only 19
Read
Write Only 19
Initial
No.
value
0000h PA19 Parameter writing inhibit
Used to select the reference range and writing range
of parameters by changing a setting value.
Use with the initial value as is.
(Refer to the table "The setting values of [Pr. PA19]
and their accessible parameters".)
0000h Restart after instantaneous power failure selection
No corresponding parameter
PC23 Servo-lock selection at speed control stop
Select the servo-lock selection at speed control stop.
0 0 0
Set the same value as for MR-J2S-_A_.
PB24 Slight vibration suppression control selection
Used to select the slight vibration suppression
control.
0: Disabled
1: Enabled
To enable the slight vibration suppression control,
select "Manual mode (_ _ _ 3)" under "Gain
adjustment mode selection" in [Pr. PA08]. Slight
vibration suppression control cannot be used in the
speed control mode.
Set the same value as for MR-J2S-_A_.
PB PC PD PE
2 - 27
MR-J4-_A_
Name and function
Servo-lock selection at speed
control stop
0: Enabled (servo-lock)
The operation to maintain
the stop position is
performed.
1: Disabled (no servo-lock)
The stop position is not
maintained. The control to
make the speed 0 r/min is
performed.
PF PL
Control
Initial
mode
value
00AAh P
S
T
0000h S
0000h P