Table 9: Termination diagrams
Type of field device Type of input/
output
Termination diagrams
NS8000 series sensors SA Bus
Network Stat with Terminals
(Fixed Address = 199)
SA Bus
Input/Output wiring validation
The SNC includes integral wiring validation for onboard
Inputs/Outputs with a default state application. The SNC
controllers ship with a default state that can assist in
validating the wiring of the input and output terminals
before downloading an application file. No special actions
need to be taken to make use of this feature. Apply power
to the SNC controller and connect to the device with
a Site Management Portal UI to view the integral I/O
points in the controller. The points are viewable under
the Local Hardware folder of the device and are named
according to the I/O they represent, for example UI-1. It
is possible to upload the default state application with the
Site Configuration Tool (SCT), as needed.
The default state creates I/O points for all connections
on the input and output terminals. It assumes all
Universal Inputs (UIs) are Nickel temperature sensors. All
Configurable Outputs (COs) are treated as Binary Outputs
(BOs) with an initial value of 0. The default state also takes
input from a Network Sensor at address 199. If there is
no connected Network Sensor, the startup of this default
state is delayed by 30 seconds as the controller attempts
to establish connection with the sensor. For more details
about the default state workflow, refer to information on
the FAN-410.
Note: The SNC is not currently supported at MAP
Gateway release 5.1.
Setting the EOL switch
The network devices at the end of an FC Bus segment
must be set as network terminated devices. The SNC
has one red EOL switch labeled FC EOL for the FC Bus
connection that sets the supervisory controller as a
network terminated device on the bus.
To set a SNC as an FC Bus terminated device, position the
switch on the EOL switch to the ON position as shown in
Figure 11.
Figure 11: FC Bus EOL switch: ON (Up) position
Note: The SNC is shipped with the EOL switch in the
initial factory position, ON (up) position as shown
in Figure 11. If the SNC is not a terminated device
on the FC Bus, reposition the EOL switch to the Off
(down) position.
Set the EOL switches appropriately for the FC Bus.
For the RS-485 connection, set the EOL termination to
ON (or install an EOL terminator) for the two devices
located at either end of each bus segment on an RS-485
Bus. Set the EOL switches to off (or do not install an EOL
terminator) for all other devices on the bus segment on
an RS-485 Bus.
Powering on the SNC
Apply power to the SNC. The device requires
approximately three minutes to start up and become
operational. See LED test sequence at startup.
Startup is complete and the SNC is operational after the
HEARTBEAT LED flashes blue/purple at 1 Hz and the red
FAULT LED is off.
F4-SNC Installation Guide 17
To Next Page
Loading...
