Encrypted Module Network
The power supply incorporates encrypted RS-485 communications technology. Network power is supplied by
the N+ and N- terminals. Connection of the communications and network power should be performed according
to the diagram shown. It is important that the N+ network communications power be 12VDC supplied from an
independent battery backed power supply unit or a networked module capable of supplying the required
voltage to all devices on the RS-485 network.
N
A
N
+
N
-
N
B
Network communications input
from the Controller or previous
module
Always connect the power supply NA and NB terminals to the NA and NB terminals of the communication
network.
Shield is frame
grounded at
one point
Shields are
connected together
and Isolated
Shielded Cable
Network Module
Shielded Cable
Shield not
connected
NA
N+
N-
NB
NA
N+
N-
NB
NA
N+
N-
NB
V+
V-
Power Supply
Controller
The diagram above shows how a single power supply can be connected to supply the module network. This
connection is suitable for smaller systems, provided that the following values are
all
lower than or equal to the
values outlined in the Technical Specifications section of this manual:
⦁
Maximum total output current,
⦁
AUX DC output current,
⦁
Controller bell DC output current, and
⦁
Total combined current
PRT-PSU-DIN-2A | Protege DIN Rail 2A Intelligent Power Supply | Installation Manual
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