CARLO GAVAZZI UWP 3.0, Руководство пользователя, Страница: 21 / 45

How to install an UWP 3.0 system
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1.3.1.3 Isolator feature
In addition, the isolator feature contributes to the separation of the sides of the bus for maximum safety.
The primary and secondary Dupline® signals are isolated, which means the primary side, made up of the
modules connected to the Dupline® generator, will continue to operate in the case of a short circuit on
the secondary side, made up of the modules connected to the Dupline® repeater.
As shown in the example below, the modules connected to the Dupline generator (shown in the green
box) will continue to operate in the case of a short circuit on the secondary side (shown in the red box)
Example 3
:
UWP 3.0 SB2REP230
As soon as the short circuit is removed, the secondary side will automatically become operational again.
N.B. In the case of a short circuit on the primary Dupline® side, the secondary Dupline® also goes down:
until the short circuit is removed (see above), neither of the Dupline sides will operate.
1.3.1.4 Placing the SB2REP230 in a project
To wire a Dupline repeater into a network, the Dupline transparent module SH1DUPFT has to be used:
the terminals on the top of the
SH2MCG24 are connected to the Transparent module and the Dupline
repeater just has to be plugged into the local bus connector. The Dupline® repeater is typically mounted
in a different cabinet some distance from the
SH2MCG24 .
The secondary side has to be connected to the terminals REP+ and REP- (see pictures on pages 18 and
19).
The Dupline repeater is able to regenerate the bus voltage starting from a minimum value of 5.5V: care
must be taken to connect it before the voltage drops to below this minimum voltage.
Recommendation:
On each bus branch it is not possible to connect more than one repeater in series: the connection shown
in the picture below must be avoided
.
SH2MCG24 SB2REP230 SB2REP230 Dupline® modules
PRIMARY DUPLINE® SIDE
SECONDARY DUPLINE® SIDE
PRIMARY DUPLINE® SIDE SECONDARY DUPLINE® SIDE
Dupline®
modules
Dupline®
modules