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Operation
indicators
12
f
n = 50Hz
I
= 1A
5A (
I
)
n
∆
I
=
1A
5A
(
I
)
60Hz
n
SPAJ 160 C
80...265V ~ –
U
18...80V –
SPCJ 4D40
REGISTERS
OPERATION IND.
0 0 0 0
0
1
1
>
I
/
I
I a
ALARM
n
L1
2
2
>
I
/
I b
I
START
n
L2
3
3
/
>
I
I
I b
TRIP
n
L3
∆
4
t
(
>
)
[
]
4
>
I a
%
I
ALARM
1
∆
5
(
>
)
[
]
5
t
I b
%
I
>
START
2
∆
∆
∆
6
6
/
[
%
]
>
I
I
I
TRIP
c
n
2
∆
7
7
t
(
>
)
[
%
]
<
I
I
OPERATION
1
∆
8
t
(
)
[
]
8
I
>
%
RECONN. INH.
2
9
(
< %
)
[
]
9
t
I
EXTERN. TRIP
RS 421
Ser.No.
A) The indicator TRIP is lit when one of the
protection stages operates. When the protection
stage returns, the red indicator remains alight.
B) If the display is dark when one of the pro-
tection stages I
> or I
> request for tripping,
a
b
the faulty phase is indicated with a yellow LED.
If, for instance, the TRIP indicator glows red,
Indication
Explanation
1
I
> alarm
a
2
I
> start
b
3
I
> trip
b
∆I
4
> alarm
1
∆I
5
> start
2
∆I
6
> trip
2
7
I< operation
8
t
rec
9
EXT.TRIP
3
I >
∆
I
2
3
I <
∆
I
I
I
I
IRF
L1
L2
L3
c
5
RESET
I
/
>
I
b
n
STEP
aux
k
[
]
I
>
%
I
a
b
t
[
]
a min
I
< I
/
n
t
< s
[ ]
[
]
t
rec min
∆
∆
[
]
I
>
%
I
n
1
∆
[ ]
t
s
1
∆
∆
>
[
]
I
%
I
n
2
∆
k
2
∆
∆
[
]
I
%
I
n
cs
PROGRAM
SGF
SGB
SGR
TRIP
SPCJ 4D40
= The overload stage I
= The overload stage I
= The overload stage I
= The stage ∆I
> has given an alarm
1
= The stage ∆I
> has started
2
= The stage ∆I
> has tripped
2
= The stage I< has operated
= The reconnection inhibit is active, indication is self-reset
= A trip from an external relay has been carried out via the relay
and the indicators I
and I
L1
same time, overcurrent has occurred on phase
L1 and L2.
C) Besides being a code number at data presen-
tation, the leftmost red digit in the display serves
as a visual operation indicator. An operation
indicator is recognized by the fact that the red
digit alone is switched on. The operation indi-
cation from a start or the reconnection inhibit
is always replaced by a new operation indica-
tion. On the other hand an operation indica-
tion from a stage connected to the trip relay A
can not be replaced by a new operation indica-
tion. In order to enable reading of actual cur-
rent levels etc. when reconnection time is run-
ning, it is possible to acknowledge the indica-
tion 8 while the unit is still activated. The same
applies to the external trip indication 9. In these
cases the indications are memorized and reap-
pear when the display is dark. Operation indi-
cator 8 is automatically reset when the capaci-
tor bank is reconnected. The following table,
named OPERATION IND. on the relay front
panel, is a key to the operation indicator code
numbers used.
> has given an alarm
a
> has started
b
> has tripped
b
are ON at the
L2
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