Nautel NX100, Preinstallation Manual

Page: 78 / 99

NX100 Pre-installation Manual Planning control/monitor connections
Issue 3.2 2017-03-31 Page 8-9
Remote outputs
Up to 16 remote outputs, that indicate either the presence of various alarms or the status of operator
controlled circuits, are available for remote monitoring on connectors J3, J4 and J5 on the remote
interface PWB (A11A4). The sources and active logic levels of these remote outputs are user-defined.
See
Table 8.3 on page 8-10 for a list of output options and their descriptions. See Table 8.4 on
page 8-11 for the associated output terminals and status LEDs (see “LED configuration” ) on the
remote interface PWB.
A switching device for each remote output provides the desired active logic when a true condition
exists. Nautel presets all remote outputs for Logic ‘0’ Active.
If the remote output is configured as Logic ‘0’ Active (see the NX100 Operations and Maintenance
Manual ), then the remote output’s switching circuit will provide a current-sink-to-ground when a logic
true condition exists and an open collector for a logic false condition.
If the remote output is configured as Logic ‘1’ Active (see the NX100 Operations and Maintenance
Manual ), then the remote output’s switching circuit will provide an open collector when a logic true
condition exists and a current-sink-to-ground for a logic false condition.
LED configuration
The remote interface PWB contains a bi-colour LED (DS1 through DS16) and a shorting jumper
(E1 through E16) for each of the 16 remote outputs. Each LED can be configured to glow green for
a status output or red for an alarm output, by setting the position of the associated shorting jumper.
For a status output, install the shorting jumper to short positions 1 and 2 of its post. For an alarm
output, install the shorting jumper to short positions 2 and 3 of its post. See
Table 8.4 on page 8-11
to determine the LED and shorting jumper associated with each remote output.
Below each LED is a blank, white label to allow for labelling of the status/alarm output.
Remote output connections
Remote outputs 1 through 16, as required, connect to terminals of connectors J3, J4 and J5 on the
remote interface PWB (A11A4). See
Table 8.4 on page 8-11 to determine the output terminal
associated with each remote output.