Mitsubishi Electric MELSERVO-J4 Series Transition Handbook page 129

Part 3: Review on Replacement of MR-J3-_B_ with MR-J4-_B_
No. Name and function
PB17 Automatic setting parameter
The value of this parameter is set according to a set
value of [Pr. PB06] (Load to motor inertia ratio)
PB18 Low-pass filter setting
Set the low-pass filter.
Setting [Pr. PB023] (low-pass filter selection) to "_ _ 0 _"
automatically changes this parameter.
When [Pr. PB023] is set to "_ _ 1 _", this parameter can
be set manually.
MR-J3-_B_
Initial
No.
value
PB17 Shaft resonance suppression filter
This is used for setting the shaft resonance suppression
filter.
This is used to suppress a low-frequency machine
vibration.
When you select "Automatic setting (_ _ _ 0)" of "Shaft
resonance suppression filter selection" in [Pr. PB23], the
value will be calculated automatically from the servo
motor you use and load to motor inertia ratio. When
"Manual setting (_ _ _ 1)" is selected, the setting written
to the parameter is used.
When "Shaft resonance suppression filter selection" is
"Disabled (_ _ _ 2)" in [Pr. PB23], the setting value of this
parameter will be disabled.
When you select "Enabled (_ _ _ 1)" of "Machine
resonance suppression filter 4 selection" in [Pr. PB49],
the shaft resonance suppression filter is not available.
_ _ x x:
Shaft resonance suppression filter setting frequency
selection
This is used for setting the shaft resonance suppression
filter.
Refer to table 3.2 for settings.
Set the value closest to the frequency you need.
_ x _ _ :
Notch depth selection
0: -40 dB
1: -14 dB
2: -8 dB
3: -4 dB
x _ _ _ :
For manufacturer setting
Table 3.2 Shaft resonance suppression filter setting
Setting
Frequency [Hz]
value
_ _ 0 0
_ _ 0 1
_ _ 0 2
_ _ 0 3
_ _ 0 4
_ _ 0 5
_ _ 0 6
_ _ 0 7
_ _ 0 8
_ _ 0 9
_ _ 0 A
_ _ 0 B
_ _ 0 C
_ _ 0 D
_ _ 0 E
_ _ 0 F
3141 PB18
Same setting as MR-J3
Low-pass filter setting
Set the low-pass filter.
The following shows a relation of a required parameter to
this parameter.
[Pr. PB23]
_ _ 0 _ (Initial value)
_ _ 1 _
_ _ 2 _
3 - 28
MR-J4-_B_
Name and function
frequency selection
Setting
Frequency [Hz]
value
Disabled _ _ 1 0 562
Disabled _ _ 1 1 529
4500 _ _ 1 2 500
3000 _ _ 1 3 473
2250 _ _ 1 4 450
1800 _ _ 1 5 428
1500 _ _ 1 6 409
1285 _ _ 1 7 391
1125 _ _ 1 8 375
1000 _ _ 1 9 360
900 _ _ 1 A 346
818 _ _ 1 B 333
750 _ _ 1 C 321
692 _ _ 1 D 310
642 _ _ 1 E 300
600 _ _ 1 F 290
[Pr. PB18]
Automatic setting
Setting value enabled
Setting value disabled
Initial
value
00h
0h
0h
3141