SY-SIX-CTRL-DIN-1D | Synergis IX DIN Rail Single Door Controller | Installation Manual
Last Updated August 2018
12
Encrypted Module Network
The Controller incorporates encrypted RS-485 communications technology. Connection of the
communications should be performed according to the following diagram.
PSU or
equivalent 12V DC
Shield is frame
grounded at
one point
Shields are
connected together
and Isolated
Shielded Cable
Controller
Network Module
Network Module
Shielded Cable
Shield not
connected
supply
NA
N+
N-
NB
NA
N+
N-
NB
NA
N+
N-
NB
Always connect the Controller's NA and NB terminals to the NA and NB terminals of the expansion devices
and keypads. The N+ and N- must connect to a 12V power supply source capable of supplying the peak
current drawn by all modules. If a shielded cable is used, the shield must be connected at only one end of the
cable. DO NOT connect a shield at both ends.
Warning:
The 12V N+ and N- communication input must be supplied from only one point. Connections from
more than one 12V supply may cause failure or damage to the units supplying power.
Make sure that the power supply can supply enough current for the peak load drawn by all modules
connected to the 12V supply, including the Controller itself.
Module Wiring
The recommended module network wiring specifications are:
Belden 9842 or equivalent
24AWG twisted pair with characteristic impedance of 120ohm
Maximum total length of cable is max 900m (3000ft)
CAT5e / CAT6 are also supported for data transmission when using ground in the same cable (to a
maximum length 100m (328ft))
Warning
: Unused wires in the cable must not be used to carry power to other devices.
