12
SGB
SGF
SPCU 3D45
PROGRAM
RESET
STEP
o
IRF
I
1
U
1011
2
U
3
U
U
∆
f
∆
ϕ
∆
U
∆
ϕ
∆
f
∆
max
U
n
U
/
min
U
n
U
/
t
n
U
/
VC
SGR
t
CB13
t
CB23
RS 488
Ser.No.
SPAU 140 C
U
aux
REGISTERS
OPER.IND.
0
0
0
0
0
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
CB13
CB23
2
5
1010B
80...265V ~–
18...80V –
f
n = 50Hz
60Hz
13
ϕ
∆
23
ϕ
∆
13
f
∆
23
f
∆
3
f
n
U
= 100V 110V
1
U
n
U
/
2
U
n
U
/
3
U
n
U
/
NC23
CSF13
CSF23
MODE
NC13
SPCU 3D45
Operation
indicators
The yellow operation indicator is lit as soon as
one of the stages of the relay operates and has
activated its control output. When the stage re-
sets, the yellow LED is reset as well.
Operation Explanation
indicator
1
CB13
Close signal of stage 1 is active
2
CB23
Close signal of stage 2 is active
3
NC13
Stage 1 failed to close the CB (only command mode operation)
4
NC23
Stage 2 failed to close the CB (only command mode operation)
5
CSF13
Signal CS13 requesting CB closing is active too long
(only command mode operation)
6
CSF23
Signal CS23 requesting CB closing is active too long
(only command mode operation)
The IRF LED indicates internal relay fault. The
indicator is lit about 1 minute after the self-su-
pervision system has detected a permanent fault.
At the same time as the LED goes on the relay
module delivers a control signal to the output
relay of the self-supervision system. In most cases
a fault code that shows the nature of the fault
appears on the display of the relay module. This
fault code that consists of a red digit 1 and a
green code number cannot be reset from the
display. The code should be recorded to facili-
tate service.
The leftmost red digit on the display has two
functions: on one hand, it serves as address in-
dicator for different types of data and, on the
other hand, as operation indicator of the two
stages of the synchro-check relay. Operation is
indicated by a red digit, 1 or 2, depending on
which of the stages that activated its close sig-
nal.
The red digits 3, 4, 5 and 6 indicate an abnor-
mal situation at command mode operation.
These alarm indicators remain lit even when the
situation returns to normal, and have to be re-
set by pressing the reset push-button. A non-
reset operation indicator does not affect the
operation of the relay module, which is always
alert. The following table, which is printed on
the relay's front plate under the name OPER.
IND., explains the code numbers of the opera-
tion indicators.