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6.0 Operation and Setup
Avlite’s AV-OL-CTRL-T3 Obstruction Control Unit can connect to four components: a single
red and white Combined Medium Intensity obstruction beacon (CMI), and three red, single
fixture obstruction lights (LI).
An External Photocell allows the lights to automatically switch between day and night
mode. The Photocell output can also be overridden for system testing and maintenance via
the Photocell Bypass Switch.
The Control Unit automatically evaluates the T3 lights for operation and performance while
providing local and remote display of information and alarms; operators can conveniently
view the lights’ real time status from the web based Star2M™ portal.
6.1 Product Overview
6.1.1 T3 Controller
The T3 Control Unit provides power, control and monitoring of
the light fixtures in the system.
For safety and security, the control unit comes with a safety
interlock which prevents access to the controller while the
system is powered on.
The Controller is available in two input power configurations;
a universal AC or DC and comes with remote monitoring via
Star2M with either GSM or Satcom telemetry types as options.
By default, the control unit comes with 2 dry contacts for
external monitoring of both the CMI and LI single light fixtures
which receive the associated alarm (i.e. Group 2 for the CMI and Group 1 for the LI single
fixture lights) in the event of a power or LED fault.
Note: External dry contact monitoring is unavailable if remote monitoring via GSM or
Satcom has been enabled
A Photocell Bypass Switch is provided with the Control Unit to override the Photocell output
for system testing and maintenance. It is factory-set to AUTO (auto day/night) mode.
To test the function of lights for day operation, turn the Photocell Bypass Switch to the Day
position. The CMI should flash white while the LI Single light fixtures remain off.
To test the function of lights for night operation, turn the Photocell Bypass Switch to the
Night position. The CMI should be illuminated red and should either flash (for CMI Type
A & B) or remain steady-burning (for CMI Type A & C). All LI Single Fixtures should be
illuminated red.
To return to the Auto mode, return the switch to the Auto position.
Note: Time delays are to be expected when changing modes. Allow up to 1 minute to
change between functions.