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If the power supplies are distributed correctly, to establish the type of cable and cross-sections to be used, follow the instructions below:
- Cable between button and module input: electrical cord, with minimum cross-section of 0.22 mm2 and maximum length of 20 m
- Cable between entrance modules (without on-board relay): electrical cord with minimum cross-section of 0.50 mm2
- Cable between modules with on-board relay or between junction boxes or panels (load nodes with greater absorption): electrical cord with
minimum cross-section of 0.75 mm2, preferably with screen at the negative of a single power supply unit (particularly in the presence of
inductive loads such as motors or neon lamps).
1.3 - COMMUNICATION TYPE
All devices communicate directly between themselves without a supervision/control unit, and therefore the communication time dos not vary as
the system expands: it takes the same amount of time for two modules speak to each other whether the system consists of 2 or 200 modules.
A SimpleHome system can be perceived as a set of several subsystems, each one capable of controlling up to 255 devices and a bus section up to
2 km long; individual subsystems do not require a supervisor, which on the other hand is necessary if the subsystems need to exchange information
between themselves.
Modules with inputs, when the status of one of these changes, send a single message which can be destined for:
- another module, to activate an output;
- a zone, i.e. to a group of common outputs belonging to the same group;
- to the supervisor, if complex scenarios are required or if the command needs to be sent to another SimpleHome subsystem.
To clarify the concept of the ZONE, let us consider the following example: all outputs (distributed across several modules) controlling the lights on
a fl oor or in a building belong to the same ZONE, and these can be controlled individually; alternatively, to switch them all off at once, simply use a
single button connected to an input module which will send an off message to ZONE1 and therefore to all users belonging to it.
1.4 - DIGITAL AND ANALOGUE MODULES
Modules with inputs and outputs can be divided into two macrofamilies:
- digital modules: have inputs which read an open or closed status (ON/OFF or 1/0) and outputs which control
an on or off status (ON/OFF);
- analogue modules: have inputs which read a scale of values (from 0 to 255) in 0-10 V voltage, such as temperature
sensors, and outputs which assume a variable value from 0 to 10 V (e.g. light dimmer adjustment).
Another difference between the various modules is the container:
- fl ush-mounted modules: generally used to collect status information for buttons/switches and send it over the bus; they also have
low-power outputs for checking local indicator lights or controlling local external relays;
- DIN rail modules: have relay power outputs for controlling electrical loads even at 230 Vac (lights, automations, etc.);
they also have on-board inputs which are the same as those on fl ush-mounted modules.
Finally, DIN rail modules differ in terms of relay power (6A or 16A) and due to the fact that the 6A modules use relays with
NO (normally open) contact and a common every 4 outputs, while 16A modules use voltage-free switching contacts
(each with its own common).
1.5 - MODULE IDENTIFICATION
Modules are all produced with the serial number 1, but several modules with the same serial number cannot be connected to the bus: the very fi rst
thing that should be done is therefore to assign a different serial number to each module using the confi guration program, as described in detail in
this manual.
We recommend never using serial number 1 in system confi guration, so that you can always add an new module later on, as explained in the chapter
relating to confi guration software.
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