Limit Switches - RESEARCH CONCEPTS RC3050 User Manual

RC3050 Antenna Controller

2.2.4 Limit Switches

J3 (DB-15 Female) connects to the azimuth stow, elevation stow, elevation up and elevation down limit
switches.
J3 9 AZ Stow +
7 AZ Stow -
10 EL Up +
14 EL Up -
5 EL Down +
6 EL Down -
11 EL Stow +
13 EL Stow -
2 Pol Stow +
1 Pol Stow -
4 Drain
The + side of each limit switch circuit supplies 12 VDC. This 12 VDC supply is protected by a resettable
fuse rated at 250 mA.
The azimuth stow switch must be closed when at the azimuth stow position. If the azimuth stow limit
switch cable is severed, the RC3050 will think that the azimuth is not at the stowed position. Logic
within the RC3050 will not allow elevation to move below the elevation down limit switch if an azimuth
stowed condition is not recognized.
The elevation up switch must be open when the elevation axis has reached the up limit. If the elevation
up limit switch cable is severed, the RC3050 will think that the elevation axis is at the up limit. Logic
within the RC3050 will not allow the elevation axis to move up if an up limit condition is recognized.
The elevation down switch must open when the elevation axis has reached the down limit. If the
elevation down limit switch cable is severed, the RC3050 will think that the elevation axis is below the
down limit. Logic within the RC3050 will not allow the azimuth axis to move when the elevation down
condition is recognized.
The elevation stow switch must open when the elevation axis has reached the stow position. If the
elevation stow limit switch cable is severed, the RC3050 will think that the elevation axis is at the stow
position. When the elevation stow limit is sensed, the RC3050's hardware also internally generates an
elevation down indication. Logic within the RC3050 will not allow the elevation axis to move down when
the elevation stow condition is recognized.
Research Concepts, Inc.; 5420 Martindale Road; Shawnee, Kansas 66218-9680 USA
Chapter 2
LIMIT SWITCHES
NC
Azimuth Stow
NO
Elevation Up
NO
Elevation Down
NO
Elevation Stow
NO
Polarization Stow
Switch Annotations are for the Limit Conditi
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Installation
limit_sw.dw
www.researchconcepts.com
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