14
Installation/Configuration ER600
4.3
CONNECTIONS
Below is an explanation on how to carry out all the electrical connections and necessary signals for starting up the system.
IMPORTANT!
Before running the cables, check that the sections are correct and that conform with the maximum distances.
IMPORTANT!
The end of the stranded conduction must not be consolidated with a soft-solder welding in the points where the
conductor is subject to contact pressure.
Therefore it is not allowed to solder the terminals of the cables connected to the terminals of the devices.
4.3.1
Connecting the data Bus
Connect the terminals
+,
+D
,
D
and
─
the cable to the 4 wires of the bus; this will enable the communications among the control panel,
readers, keypads, any expansions present.
The data bust requires no terminal resistors.
The cable shieldings can be connected together in the control panel at the negative pole (
─
) of the power supply.
The figure below demonstrates how to connect the various devices to each other via the bus line.
Figure 4 - Connections via bus