Motor Drive - RESEARCH CONCEPTS RC3050 User Manual

RC3050 Antenna Controller

2.2.2 Motor Drive

J7 is an MS3102A22-20S connector, which terminates three motor cables. The minimum wire size for
these cables is 16AWG.
J7
E AZ Drain
G
Az Drive
F Az Return
D El Drain
H
El Drive
J El Return
C Pol Drain
A
Pol Drive
B Pol Return
The RC3050A is designed to drive 12 to 36 volt DC azimuth, elevation, and polarization motors. The
absolute maximum allowed motor current is 12 Amps. The RC3050A employs a built-in, solid-state
motor controller (model 25A8 from Advanced Motion Controls. The motor drive module supports IR
compensation, current limiting, dual speed operation, and dynamic braking. The drive train is also
protected with resettable fuses.
The RC3050B is designed to drive 90 volt (3/4 horsepower max) or 180 volt (1.5 horsepower max) DC
azimuth and elevation motors. Ideally, 90 volt DC motors would be specified with 115 VAC input power
and 180 volt DC motors with 230 VAC input power. 180 volt motors cannot be used with 115 VAC input
power. The motor drive in the RC3050B is the model KBPB by KB Electronics . This motor drive
supports IR compensation, current limiting, dual speed operation, and dynamic braking.
The polarization drive of the RC3000B is designed to power a 12 volt DC motor which draws less than
400 ma.
The following table describes the polarity of the RC3000's motor drive output signals.
Axis RC3050 Connector
J7 Terminals
Azimuth G, F
Elevation H, J
Polarization A, B
Research Concepts, Inc.; 5420 Martindale Road; Shawnee, Kansas 66218-9680 USA
Chapter 2
DC MOTORS
AZIM
ELEV
POL
dri
Polarity
For azimuth CW movement, terminal G has the higher potential.
For elevation UP movement, terminal H has the higher potential.
For polarization CW movement, terminal A has the higher
potential.
13
Installation 13
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