8 | Maintenance Instructions TOPAX DX | BA-40100-0-V04
Chapter 4: Installation
Fig. 4.3: Spacing of hole for monting the device (left) and the device dimensions.
4.3 Product overview
The TOPAX
®
DX device is composed of two parts, a rear and
a front housing (see Abb. 4.1). The rear shell of the housing is
electrically connected with a flat cable with the front one.
Rear housing
consists of rear housing with the motherboard, in which the cable
connections are screwed in. On the motherboard there are the
main modules for the functioning.
Depending upon the model, two input blocks are available to-
gether with an output block. For networking purposes with con-
nection to a PC, an additional interface (RS485) is available. All
blocks are connected by plug connectors to the motherboard and
fastened with several screws. TOPAX ® DX requires at least one
input block for trouble-less operation.
Front housing
On the front housing there are the display plate and the key-
board. A colour display is available for displaying measurements
and adjustments. The operation takes place with 6 function keys
as well as a control cross with „OK“ key. The keys are integrated
in a glass keyboard and react to contact. The function of the
key is signalled with a tone. All announcements in the individual
menus are written in clear text.
Fig. 4.4: front shell (left) with display and rear shell of the device.
4.4 Technical components
Besides the main board, the following can be fitted in addition
(see paragraph 4.5).
• up to two input components
• an output component and
• an interface component
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
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. 4.5:Adjustment of the technical components on the main board
Mainboard (Order-No. 78402)
The mainboard holds the technical components and has its own
connectors::
• 8 analog powerinputs (0/4-0 mA)
• 8 digital inputs
• Alarm relay
• Power supply
5-fold input board (Order-No. 78403)
with 5 measurement inputs for:
• Free chlorine (amperometric or membrane covered elec-
trode) (0/4-0 mA)
• pH value combination electrode
• Redox combination electrode
171 mm
267 mm
302 mm
240 mm
171 mm
267 mm
302 mm
240 mm
