CARLO GAVAZZI UWP 3.0, Руководство пользователя, Страница: 22 / 45

How to install an UWP 3.0 system
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Example of correct wiring:
The example below shows a correct network design, where the installer has placed the Dupline® DIN-
rail modules in different cabinets and the distances have been calculated by considering the cable section
and the voltage drop due to the bus-powered connected modules.
In the main cabinet, shown by the black square in the picture above, the installer has placed the UWP
3.0 and the SH2MCG24 .
The other cabinets are shown in colours:
- the red one is 150 metres from the UWP 3.0 : the repeater is not necessary because of the short
distance and the small load connected
- the yellow cabinet is next to the purple one and they are 170 metres away from the Dupline
generator. Here the installer has placed 6 Din-rail modules (SH2RE16A4), which do not generate
too high a voltage drop since, in normal conditions, the consumption of the 4 relay modules
supplied by the bus is 6mA (even if this value increases when a relay is switched on/off)
- in the purple cabinet, the installer has placed another 6 SH2RE16A4 modules
- the green cabinet is 700 metres away from the violet cabinet and the repeater is placed here to
boost the current and voltage, which otherwise are not sufficient to supply the other relay modules
placed here.
Example of Dupline Bus current calculation (see the voltage-drop file)
To calculate the voltage drop at the end of the 700m, as shown in the green cabinet in the picture above, the installer
has to use the
excel file, available in our Product Selection website, in the UWP 3.0 and SH2MCG24 pages.
The data used to calculate the voltage drop in the example above is:
- Cable section: 0.75 mm;
- Number of modules in the yellow and violet cabinets: 12
- Consumption of a SH2RE16A4: 6mA
- Total consumption of the network: about 72 mA
- Voltage measured at the end of the 700m: 5.5V
Cabinet 2
Smart Dupline modules
(e.g. 6 SH2RE16A4)
Cabinet 3
Smart Dupline modules
(e.g. 6 SH2RE16A4)
Cabinet 4
SB2REP230
Main Cabinet
UWP 3.0+SH2MCG24
1
7
0
m
5 m
700 m
150 m
Cabinet 5
Smart Dupline modules
(e.g. 4 SH2RE16A4)