Performing Record Reset - Mitsubishi Electric melpto d series Operation Manual

Numerical protection relay
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D - 4

Performing record reset

This option can be used to clear the max. records / fault records / self-diagnosis records.
【 We recommend that refer to the following procedure to clear the records saved in relay before using the relay into
protection system. 】
<< Example >>
Step
Description
1
The setting mode starts. The
SETTING/CANCEL indicator LED comes
on and the item number blinks.
2
Mode selection (Setting
Operation
Option)
See the section D - 1 for how to select
mode.
3
Select the item number "903" (Max.
record reset).
4
Make sure that the item number "903" is
shown in the box, and press the
SELECT/SET switch. The item data
box will start blinking, instead of the item
No. box, so that data can be changed.
5
Change the item data from "no" (not clear)
to "YES" (clear).
6
Make sure that the desired data is shown
in the item data box, and press the
SELECT/SET switch to program the
data.
With the "YES" data, the SET.END/TRIP
indicator LED will blink.
At the same time, the item number box
will start blinking instead of the item data
box.
Note that the record will not be cleared
only by programming the "YES" data.
To clear the max. record:
(The same procedure can be applied when clearing the fault or self-diagnosis record only by changing
the item number).
Switch
SETTING/
CANCEL
Forced
(Omitted)
UP
SELECT/SET
UP
SELECT/SET
Operation
Press
Item No.
9
Item No.
9
29
Indication
Item No.
Item data
5
1
1
2.
S E T T IN G /
U P
C A N C E L
D O W N
S E L E C T /
S E T
IN D ./
IN D I.E N D
S E T .E N D /
T R IP
R E S E T
Item No.
Item data
8
0
0
0
1
Item No.
Item data
9
0
3
n
o
Item data
0
3
n
o
Item data
0
3
Y
E
S
Item No.
Item data
9
0
3
Y
E
S
S E T T IN G /
U P
C A N C E L
D O W N
S E L E C T /
S E T
IN D ./
IN D I.E N D
S E T .E N D /
T R IP
R E S E T
JEP0-IL9416
0
0
0

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