Mitsubishi Electric MELSERVO-J3 Series Handbook page 235

Part 5: Review on Replacement of MR-J3-DU_ with MR-J4-DU_
MR-J3-CR55K/MR-J3-CR55K4
No. Name and function
PA17 For manufacturer setting
Do not change this value by any means.
PA18 For manufacturer setting
Do not change this value by any means.
Initial
No.
value
0000h PA17 Function selection A-5
The [Pr. PA17 SEMI-F47 function selection] and [Pr.
PA18 SEMI-F47 function - Instantaneous power failure
detection time] settings of the converter unit must be
the same as [Pr. PA20 SEMI-F47 function selection]
and [Pr. PF25 SEMI-F47 function - Instantaneous
power failure detection time] settings of the drive unit.
_ _ _ x:
[AL. 10 Undervoltage] detection method selection
Set this parameter when [AL. 10] occurs due to
distorted power supply voltage waveform.
0: [AL. 10] not occurrence
1: [AL. 10] occurrence
_ _ x _:
SEMI-F47 function selection
0: Disabled
1: Enabled
Selecting "1" enables to avoid triggering [AL. 10
Undervoltage] using the electrical energy charged in
the capacitor in case that an instantaneous power
failure occurs during operation. In [Pr. PA18 SEMI-F47
function - Instantaneous power failure detection time],
set the time until the occurrence of [AL. 10
Undervoltage].
_ x _ _:
For manufacturer setting
x _ _ _:
For manufacturer setting
0000h PA18 SEMI-F47 function - Instanta-neous power failure
detection time
The [Pr. PA17 SEMI-F47 function selection] and [Pr.
PA18 SEMI-F47 function - Instantaneous power failure
detection time] settings of the converter unit must be
the same as [Pr. PA20 SEMI-F47 function selection]
and [Pr. PF25 SEMI-F47 function - Instantaneous
power failure detection time] settings of the drive unit.
Set the time until the occurrence of [AL. 10
Undervoltage].
To disable the parameter setting value, select
"Disabled (_ _ 0 _)" of "SEMI-F47 function selection" in
[Pr. PA17].
Setting range: 30 to 200
5 - 40
MR-CR55K/MR-CR55K4
Name and function
Initial
value
1h
0h
0h
0h
200 [ms]