RC4500 Antenna Controller Chapter 3 Mechanical & Electrical Installation
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Connector J7 Antenna I/O Signal Descriptions (continued):
Pin # Signal Name Description
19 Emergency Stop Status Emergency Stop input.
When current flows in this circuit, the controller assumes that the
AIU Emergency Stop is not active. If the controller senses that the
Emergency Stop is active, the controller disables antenna control
and displays the ‘Emergency Stop’ message.
16 Emergency Stop Return This is the return associated with the Emergency Stop input.
21, 22 AZ Fast Command,
EL Fast Command
Azimuth and Elevation Fast/Slow pull down type current drivers
(outputs).
When fast speed is specified, these drivers conduct.
Return current flows out the Drive Common pins.
23 Drive Enable This output is used to reset the Azimuth and Elevation drives.
The driver conducts when the antenna drives are enabled, the
driver shuts off (does not conduct) to reset the Azimuth and
Elevation motor drives.
Return current flows out the Drive Common pins.
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