44 | Maintenance Instructions TOPAX DX | BA-40100-0-V04
Chapter 17: Wiring diagrams
Example 4
Sensors connection
free chlorine: Potentiostatic electrode
pH value:
Combination electrode
Redox:
Combination electrode
Controller connection
free chlorine: C7700 ( servomotor with potentiometer)
pH value:
Magnetic metering pump
(pulse frequency – Optocoupler)
Miscellaneous
RS 485 interface board RS 485
Terminal clips
DO4 DO3 DO2 DO1
DO7
DO6
DO5
DO0
C7700
2
3
1
11
10
12
OPEN
CLOSED
90 to 264 V AC
RS 485
78399
CPR
T(A
TE) 5.fach
78404
C(P) 20mA(A
TE)
78403
free cholrine
(potentiostatic electrode)
pH-value
Redox
reference electrode
counter electrode (stainless steel)
measuring electrode (Gold)
pH-value
dosing pump
temperature
water-shortage
3-fold
input block
78402
output block
20 mA
power outputs
digital inputs
alarm relays
mainboard
power generator
5-fold input block
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
36
37
38
PE
N
L
33
34
92
93
94
87
88
89
90
91
86
-
+
81
82
83
84
85
-
-
+
+
56
57
58
59
60
-
+
51A
52A
53
54
55
61
51B
52B
-
-
+
+
-
+
71
72
73
74
75
76
77
78
39
40
41
43
44
45
46
42
35
95
96
A
B
A
B
interface card
78406
