8 | BA-40100-02-V17
TOPAX
®
DX
Multichannel controller
Fig. 3: Spacing of hole for mounting the device (left) and the device dimensions
4.3 Structure of the device
The TOPAX DX device is composed of two parts, a rear and a front hous-
ing. They are mechanically connected with two pivots and electrically
connected with a flat cable.
4.3.1 Rear housing
Consists of rear housing with the motherboard, in which the cable con-
nections are screwed in.
On the motherboard there are the main modules for the functioning.
Depending upon the model, two input assemblies are available together
with one output assembly. For networking purposes with connection to
a PC, an additional interface (RS485) is available. All assemblies are
attached to the main board by plug connectors and fastened with sev-
eral nuts.
4.3.2 Front housing
The front housing contains the display board and the keyboard. A colour
display is included to show measurements and allow for adjustment. The
operation takes place with 6 function keys as well as a control cross with
"OK" key. The keys are integrated in a keyboard and react to contact. All
displays of the individual menus appear as plain text.
Fig. 4: Front and rear housing (left) with display and rear housing.
4.4 Technical components
Besides the main board, the following can be fitted in addition
• up to 2 input components
• an output component and
• an Interface module (RS 485)
To operate the TOPAX DX at least one entry component has to be built in.
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
Digital 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. 5: Arranging the components on the main board
4.4.1 Main board (order no. 78402)
Besides this function, to incorporate the further components, the main
board is made up of the following connections:
• 8 analogue power inputs (0/4...20mA)
• 8 digital inputs
• Alarm relay
• Power supply
4.4.2 5-fold Input block (Code 78403):
With 5 measurement inputs for:
• Dinsinfection (single amperimetric electrode or encapsulated
electrode) (0/4...20 mA)
• pH single-rod measuring cell
• Redox single-rod measuring cell
• Temperature sensor Pt100
• position feedback of a servo motor with potentiometer
171 mm
267 mm
302 mm
240 mm
171 mm
267 mm
302 mm
240 mm
Reverse side
