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Each Power Distribution Output relay has a 2 Amp Positive Temperature Coefficient
(PTC)-protected output and a yellow indicator LED. The yellow LED illuminates if
the PTC is active. Each relay also has a red indicator LED, which indicates the relay
state. If the relay is active, the LED is illuminated.
For field wiring, attach the negative terminal of the load to the NEG output terminal of
the Power Distribution Output relay. Attach the positive load terminal to either the
Normally Open or Normally Closed terminal of the Power Distribution Output relay.
Refer to
Caution:
cable shield should be grounded at the panel only. Grounding at both ends can cause
ground loops which can be disruptive. Do not bundle these wires with
communication, reader, or supervised input wiring.
To minimize premature contract failure and increase system reliability, a contact
protection circuit (HAS part number S-4) is highly recommended. Locate the
protection circuit as close as possible to the load.
The Power Distribution Output board can be connected to an external Fire Alarm
Control Panel (FACP). When the FACP input signal is active, it will turn off the
selected relays on the Power Distribution Output board. An eight-position DIP switch
is used to select which Power Distribution Output relays are affected by the FACP
input. To make an output respond to the FACP input, move the associated DIP switch
to the OFF position. To have the relay ignore the state of the FACP input, move the
DIP switch to the ON position.
The Power Distribution Output board has a green LED that indicates the status of the
external FACP input. The LED will turn on when the input is active and turn off when
inactive.
Table 4: NetAXS Relay and Power Distribution Board DIP Switch Associations
Default
Function
Door 1
Door 2
Door 3
Door 4
Auxiliary
Auxiliary
Auxiliary
Auxiliary
NetAXS Access Control Unit NX4L1 Installation Guide, Document 7-901099, Revision A
Figure 9
on page 20 for a wiring example.
The cable used must be sized for the current load and should be shielded. The
NetAXS Board
Relay
1
2
3
4
5
6
7
8
NetAXS™ NX4L1 Installation
Power Distribution
Power Distribution
Output Board Relay
Output Board DIP
Switch
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
Installation
19
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