Liquisys M CUM223/253 Electrical connection
Endress+Hauser 17
4.1.1 Electrical connection
The device is approved for protection class II and is generally operated without a
protective ground connection.
The circuits "C" and "F" are not galvanically isolated from each other.
a0003126
Fig. 8: Electrical connection of the transmitter
A
B
C
D
E
F
G
Sensor
Signal output 1 turbidity/solids content
Signal output 2 temperature
Binary input 1 (Hold)
Binary input 2 (Chemoclean)
Aux. voltage output
Alarm (current-free contact position)
H
I
J
K
L
M
Relay 1 (current-free contact position)
Relay 2 (current-free contact position)
Relay 3 (current-free contact position)
Relay 4 (current-free contact position)
Current input 4 to 20 mA
Power supply
47
48
49
57
58
59
41
42
43
15 V
85
86
10-50 V
81
93
82
94
10-50 V
TU
mA
31
32
mA
33
34
51
52
53
54
55
56
97
88
87
96
S
GN
WH
BN
YE
23 +
24 -
mA
L+
L–N
L1
~=
A
B
C
D
E
F
G
H
I
J
K
L
M
A
B
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