LD25x
4 Electrical connections
WARNING
Turn OFF the power supply before connecting the device.
LD250
Display unit only
All connections are as
shown below, except for
terminals 8, 9 and 10 which
are not connected.
LD251
Display unit with
analogue output
G
N
D
1
7
-3
0
V
C
D
I
N
1 2 3 4 5 6 7 8 9 10
In
pu
t A
In
pu
t
B
G
N
D
+
2
4
V
D
C
O
U
T
G
N
D
a
na
lo
gu
e
+
/-
1
0
V
a
na
lo
gu
e
0
/4
-2
0
m
A
a
n
al
og
u
e
P
E
G
N
D
23
0V
A
C
11
5
V
A
C
0
V
A
C
C
L
K
C
L
K
D
A
T
D
A
T
1 2 3 4
In
pu
t
C
(
R
e
se
t)
LD252
Display unit with 2
presets and transistor
outputs
G
N
D
1
7
-3
0
V
C
D
I
N
1 2 3 4 5 6 7 8 9 10
In
p
ut
A
In
p
ut
B
In
p
ut
C
(
R
e
se
t)
G
N
D
+
2
4
V
D
C
O
U
T
C
O
M
+
O
U
T
1
O
U
T
2
P
E
G
N
D
2
3
0
V
A
C
11
5
V
A
C
0
V
A
C
C
L
K
C
L
K
D
A
T
D
A
T
1 2 3 4
LD253
Display unit with serial
interface
G
N
D
17
-3
0
V
C
D
IN
1 2 3 4 5 6 7 8 9 10
In
pu
t A
(
tr
an
sm
.)
In
pu
t B
In
pu
t C
(
R
es
et
)
G
N
D
+
24
V
D
C
O
U
T
T
xD
/
B
(
-)
P
E
G
N
D
23
0V
A
C
11
5
V
A
C
0
V
A
C
C
L
K
C
L
K
D
A
T
D
A
T
1 2 3 4
G
N
D
R
xD
/
A
(
+
)
MAN LD25x E 1.0.odt
Electrical connections
4 of 44
