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4. Features of the system
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Fig. 2 shows an example of a compressed air station
with a GD Connect 12:
The connection of the compressors with GD Pilot is
directly via the RS485 interfaces.
The size of the compressed air receiver equals the
parameter "Receiver volume" that has to be set on
the GD Connect 12.
A programmable digital input at the GD Connect 12
can monitor a warning or error message from a
dryer.
A further programmable digital input at the GD
Connect 12 can be used to set a selection switch,
for example, for switching to a different profile (e.g.
for pressure reduction).
The RS485-3 interface allows the customer to read
data from the GD Connect 12, e.g. the status of the
compressors, and to activate a profile or reset a
statistics counter, for example.
The data is transmitted via the ModBus protocol.
An optional PROFIBUS interface can be retrofitted
if required.
Communication to the customer is also provided by
digital inputs or outputs.
If the distance to further filters, dryers or selection
switches is too great or if the number of inputs and
outputs on the GD Connect 12 is too small, an
extension module can be added.