16 Installation
EXOcompact Dual Port - Low Level EXOline
EXOcompact Dual Port C152D and C282D have an un-isolated communication port (Port
#2), Low Level EXOline. Except for the isolation all other characteristics are compatible
with EXOline and the two types could be mixed in a network without any problem.
If you connect two controllers (master – slave) with un-isolated communication ports, please
observe the following demands:
When using the same power supply for two controllers connected with un-isolated
communication ports, you must connect G0 to G0 and G to G. They must not be cross-
connected! See an example with EXOcompact Dual Port and Regio Midi in the above
figure.
The longest communication cable length is 300 m between un-isolated master/slave
ports.
A maximum of 32 controllers is allowed.
The communication cable must be well separated from power cables and other possible
interfering (EMI) cables.
A repeater with isolated power supply (e.g. Repeat485 from Regin) is recommended to
prolong the communication distance and number of controllers.
I/O Description
Power supply for AC powered models
The 24V AC supply, typically a 230V/24V transformer, is connected to contacts GO (2)
signal ground and G (1), phase. The GO (2) terminal should normally be connected to earth.
The EMI earth ( ) must be connected to the earth rail or similar to protect against
disturbances. Each process connection has active transient protection, which is led to the
EMI earth ( ).
EXOcompact is a 24V AC powered controller. The digital outputs are triacs,
switching AC loads.
The +C output is used to power supply auxiliary equipment requiring 24VDC power.
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