1 | Maintenance Instructions TOPAX DX | BA-40100-0-V04
Chapter 4: Installation
4.6 Terminal clips on the technical components
output block
mainboard
DO4
DO3
DO2
DO1
78404
78403
78402
DO7 DO6 DO5
DO0
78399
PC interface RS 485(hidden)
78406
+ -
+ -
+ - + - + - + - + - + -
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
20 mA Power Outputs
Digitale Outputs
36
37
38
PE
N
L
power generator
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
5-fold input block
Alarm relays
39
40
41
43
44
45
46
42
35
95
96
B
A
3-fold
input block
Plugin connector
to the display circuit board
Fig. 4.14: Rear casing with main board, 5-fold input block „78403“, 3-fold input
block „78404“, output board „78399“ and interface board „78406“.
Main board („78402“)
Terminal clip Function
0/4-0 mA Analogue power outputs (see paragraph 10)
1
+
Measurement output
0/4...0 mA
free chlorine
-
3
+
Measurement output
0/4...0 mA
pH-value
4
-
5
+
Measurement output
0/4...0 mA
REDOX
6
-
7
+
Measurement output
0/4...0 mA
Temperature or programmed as
controller output
8
-
9
+
Measurement output
0/4...0 mA
Bonded Chlorine or programmed
as controller output
10
-
11
+
Measurement output
0/4...0 mA
Conductivity or programmed as
controller output
1
-
13
+
Continuous controller
output, 0/4...0 mA
programmed as controller output
14
-
15
+
Continuous controller
output, 0/4...0 mA
programmed as controller output
16
-
Terminal clip Function
Digital inputs
17
Potential free input
Water shortage (normally ON or
normally OFF)
18
19
Potential free input
Filter cleaning (normally ON or
normally OFF)
0
1
Potential free input
Level pre-alarm Controller 1
(normally ON or normally OFF or
not active)
3
Potential free input
Level alarm Controller 1
(normally ON or normally OFF or
not active)
4
5
Potential free input
Level pre-alarm Controller
(normally ON or normally OFF or
not active)
6
7
Potential free input
Level alarm Controller
(normally ON or normally OFF or
not active)
8
9
Potential free input
free
30
31
Potential free input
Activate night-time reduced
operation
3
33
A
PC interface
Inbuilt interface for Software-
Update
34
B
35
GND
36
Alarm relay as bus
alarm
Opener
37
Middle contact
38
Closer
