3.4
Electrical connection
Connection diagram COM 223 / 253 in DX or DS version
The connection diagram depicted in Fig. 3.10 shows the connections when using an oxygen
sensor of type COS 4, COS 4HD or COS 41.
Note:
•
The instrument has protection
class II and is generally operated
without protective earth connecti-
on.
•
Mains supply voltage fluctuations
should not exceed ten percent of
the nominal supply voltage.
•
24V AC/DC models must be supp-
lied from an energy limiting SELV
source in accordance with dir. IEC
1010.1 Annex H.
47
48
49
57
58
59
L+
L-
L
N
∼ =
41
42
43
15 V
85
86
10-50 V
81
93
82
94
10-50 V
mA
31
32
mA
33
34
51
52
53
54
55
56
90
12
11
91
S
O
2
O
2
K
A
A
K
NTC
GN
RD
BN
ANO201.CDR
Auxiliary voltage
output
Digital
Input 2
(Chemoclean)
Digital
Input 1
(Hold)
Signal output 2:
temperature
Signal output 1
oxygen
Sensor
COS 4 /
COS 4 HD /
COS 41
Alarm
(contact
position
current-free)
Relay 1
(contact
position
current-free)
Relay 2
(contact
position
current-free)
Relay 3
(contact
position
current-free)
Relay 4
(contact
position
current-free)
Mains
Fig. 3.10
Electrical connection of
Liquisys M COM 223 / 253
in DX or DS version with
full wiring
** Auxiliary voltage supply
terminal 85/86 usable
Installation
Liquisys M COM 223 / 253
12
Hauser
