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Wiring diagrams
NOTE: the wiring diagrams, show the device complete with RS485 interface.
In case of version without of these features, the corresponding terminals must not be considered.
L.2 =
20-30-40-50% rEL
20-30-40-50%
rEM
Alarm relay 1
Pre-alarm relay 2
Remote RS485
S 291/157
1
RESET
TEST
TRANSFORMER
2
19 18 17 60 61 62
4
6
7
6
3 2
B A
Bm
TD
L1
L2
L3
N
LE12570AA_E 10/20 - 01IM cod.RDD421..
L.2 =
20-30-40-50% rEM
rEL
nd
nE
Normally de-energized
Normally energized
rEL = nd
S 291/158
AUX. SUPPLY
RS485
1
(+) (
)
+
0V
— —
—
A1
A2
19 18 17 60 61 62
33 34
35
Ba
L1
L2
L3
N
S 291/159
1
19 18 17 60 61 62
Bm
L1
L2
L3
N
S 291/156
1
2
RESET
19 18
17
60 61 62
4
6
AUX. SUPPLY
2
RESET
TEST
TRANSFORMER
RS485
(+) (
)
+
0V
— —
—
4
6
6
3 2
A1
A2
33 34
35
7
B A
TD
rEL = nE
AUX. SUPPLY
TEST
2
RESET
TRANSFORMER
RS485
(+) (
)
— —
+
0V
—
A1
A2
4
6
7
6
3 2
33 34
35
B A
TD
TEST
TRANSFORMER
AUX.
RS485
INPUT
SUPPLY
+
0V
(+) (
)
—
— —
A1
7
8
3
2
A2
33 34 35
B
A
L1
L2
L3
N
S 291/160
1
RESET
TEST
2
19 18 17 60 61 62
4
6
7
6
Ba
TD
L1
L2
L3
N
Delta D4-h
AUX. SUPPLY
TRANSFORMER
RS485
(+) (
)
+
0V
— —
—
A1
A2
3 2
33 34
35
B A
5
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