VX3 TO VX6 INSTALLATION MANUAL CONTROL AND MONITOR WIRING
PAGE 1.8.4 VERSION 1.0 2023-08-16
Remote Outputs
Six (6) remote outputs, that indicate either the presence of various alarms or the status of operator
controlled circuits, are available for remote monitoring on the REMOTE I/O-B 9-pin male D-sub
connector on the rear panel of the exciter/controller assembly (see VX3 to VX6 - Control/Monitor
Connections on page 1.8.11). The sources and active logic levels of these remote outputs are preset
at Nautel. See Table 1.8.2 on page 1.8.5 for a list of the factory preset outputs, their descriptions and
their associated output pins on the REMOTE I/O-B 9-pin male D-sub connector.
A switching device for each remote output, configurable through the front panel UI, provides the
desired active logic state, when a true condition exists.
For example, if a remote output is configured as Output Low When On (see the VX Operations and
Maintenance Manual for the specific text displayed on the front panel UI), then the remote output’s
switching circuit will provide a current-sink-to-ground when a logic true (on) condition exists and an
open collector for a logic false (off) condition.
Each switching circuit must present impedance between the switching device and a dc voltage source
that limits current flow to no more than 20 mA. Each circuit's positive voltage source must not exceed
24 V dc. The internal +12 V supply is capable of providing 250 mA for all active status outputs. If you
require more current capability, use an appropriate external power supply.
Remote Output Connections
Remote outputs 1 through 6, as required, connect to terminals of REMOTE I/O-B 9-pin male D-sub
connector on the rear panel of the exciter/controller assembly. See Table 1.8.2 on page 1.8.5 to
determine the output pin associated with each remote output.
Nautel provides a D-sub mating connector (Nautel Part # JS223) and connector shell (Nautel Part #
JS225) in the ancillary kit to facilitate customer connections to the controller, as applicable. The JS223
connector accepts 24-30 AWG wire.
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