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RC3050 Antenna Controller
Chapter 1
Introduction
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FEATURE BOARD. The feature board contains circuitry to provide power transformation for supplying
required voltages to other modules.
ANALOG BOARD. The analog board contains circuitry to control the antenna motors and condition antenna
feedback signals. The analog board provides the following major functions:
- generation of azimuth and polarization limit indications based on sensed potentiometer feedback
- conditioning of elevation inclinometer input
- conditioning of azimuth stow and elevation up/down/stow limit switch inputs
- activation of relays (based on digital board control) to direct motor drive signals from the DC motor control
module.
DC MOTOR CONTROL MODULE. The solid state DC motor speed and reversing control module contains
circuitry for antenna motor regulation. This module provides:
- acceleration adjustment for smooth motor acceleration
- deceleration adjustment for ramp down time when motor speed lowered
- anti-plug instant reverse, solid state dynamic braking
- current limiting circuitry to protect the motor against overloads and demagnetization and to
limit inrush current during startup
- IR compensation to improve load regulation
POWER ENTRY MODULE. The power entry module allows the RC3050 to be configured for 115 or 230
VAC operation.
POWER TRANSFORMER. The power supply module transforms AC input voltage to a regulated DC voltage
for use by the digital and drive boards.
1.3.2 System Interface Requirements
The RC3050 is designed to interface with several different mobile antenna mounts. This manual attempts to
describe installation and operation in a manner applicable to all mounts.
The typical interfaces required for the RC3050 to perform all its automatic functions are described in section
4.2 (External Interface Specifications). Known differences to these interfaces and how they are
accommodated for a particular mount are described in appendix A (Mount Specific Data).
1.3.3 Operational Overview
The RC3050 allows easy antenna operation via its menu based user interface. The screen displayed to the
user is based on the current controller mode. Controller modes are divided into two major groups -
operational and programming. The operational modes provide for the normal operation of the antenna. The
programming group provides for initial configuration of the controller and will typically not be used on a day by
day basis. The following example highlights the basic modes of operation provided by the RC3050.
Operational Group Functions
MANUAL. After powering up, the RC3050 enters MANUAL mode. In MANUAL mode the user may jog the
antenna in azimuth, elevation and polarization.
Az
El
Pol
180.0 –12.3 -90
F
CW
DOWN CCW
AUTOMATIC STOW/DEPLOY. From the AUTO mode, the user may ask for the antenna to be automatically
moved to the stow or deploy positions.
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Research Concepts, Inc.; 5420 Martindale Road; Shawnee, Kansas 66218-9680 USA
www.researchconcepts.com
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