STIEBEL ELTRON SOM 9s - Manual (Page 102)

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SOM 9s
Smart Display SD3 / Large Display module gA3
The Smart Display is designed for simple connection to
controllers with VBus
® . It is used for visualising data issued
by the controller: collector temperature, tank temperature
and energy yield of the solar thermal system. The use of
high-efficiency LEDs and filter glass assures a high optical
brilliance and good readability even in poor visibility condi-
tions and from a larger distance. An additional power supply
is not required. One module is required per controller.
The GA3 is a completely mounted large display module for
visualization of collector- and tank temperatures as well as
the heat quantity yield of the solar system via one 6-digit
and two 4-digit 7-segment-displays. An easy connection
to all controllers with VBus
® is possible. The front plate is
made of antireflective filterglass and is printed with a light-
resistant UV-lacquering. The universal VBus
® allows the
parallel connection of 8 Large Displays as well as additional
VBus
® modules.
AM1 Alarm module
The AM1 Alarm module is designed to signal system failures.
It is to be connected to the VBus
® of the controller and
issues an optical signal via the red LED if a failure has occur-
red. The AM1 also has a dry contact relay output, which can
e. g. be connected to a building management system (BMS).
Thus, a collective error message can be issued in the case of
a system failure. Depending on the controller and the sen-
sors connected, different fault conditions can be signalled, e.
g. sensor failures, excess or negative system pressure as well
as errors in the flow rate, such as a dry run of the pump.
The AM1 Alarm module ensures that occurring failures can
be immediately recognized and repaired, even if the system
and the controller are difficult to access or located in a
remote place. Thus, the reliability and the stable yield of the
system are ensured.
10.3 Visualization modules
The VBus ® / LAN interface adapter is designed for the direct
connection of the controller to a PC or router. It enables
easy access to the controller via the local network of the
owner. Thus, controller access, system parametrization and
data charting can be effected from every workstation of the
network. The VBus
® / LAN interface adapter is suitable for
all controllers equipped with a VBus ® . A full version of the
ServiceCenter software is included.