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CONTROL-1500A Single Axis Antenna Controller
RESET
POS
JAMMED
A/E-1:
This mode allows the user to examine the error status of the motor drive circuits and reset
them if a fault has occurred. The status of the antenna drive is displayed on the top line below
the 'POS' banner and the status of the polarization drive is displayed below the 'POL' banner.
Polarization errors will only be shown if a rotating feed is present (the 24 vdc Rot Feed
CONFIG mode item is set to Yes).
A DRIVE error indicates that the drive circuits detected an over current fault and shut down. A
JAMMED error indicates that the antenna actuators were commanded to move but no
movement was detected. A RUNAWAY error indicates that antenna movement was detected
when the actuators were not energized. A SENSOR error indicates backwards movement of
the polarization position sense potentiometer. Any antenna drive error condition can be reset
by pressing the key designated on the bottom line of the display. Errors are covered in chapter
6.
DELETE
POS
SELECT SAT
GALAXY6
This mode allows the user to delete satellites from non-volatile memory. The SCROLL
UP/DOWN and ENTER keys are active.
RE-SYNC
POS
SELECT SAT
GALAXY6
The antenna position can be corrupted by any number of causes (sensor failure, lightning
strike, faulty shield connection, etc). If there is an error in the position counts, the controller
cannot properly position itself on the satellites stored in non-volatile memory, and the limits are
not valid. In this situation, it is necessary to re-synchronize the controller's internal position
count.
To resynch the antenna, the operator positions the antenna on a known satellite which has
previously been stored in the controller's non-volatile memory (preferably a Ku band satellite,
since the beamwidth of the antenna is narrower at Ku band than at C band). The user then
activates RE-SYNC mode, and uses the SCROLL UP/DOWN keys to select the satellite name
with which the antenna is currently aligned. When the ENTER key is hit, the controller's
internal antenna position count register is initialized to the position associated with the satellite
DAWNco • 3340 S. Lapeer Rd • Orion, MI 48359-1320 • Ph (248) 391-9200 • Fax (248) 391-9207 • sales@DAWNco.com
e
POL
SS
RST
MODE
POL
SS
DEL
MODE
POL
SS
FIX
MODE
Chapter 2
Basic Function Description
8
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Table of Contents
Troubleshooting
