Research Concepts RC2500 - Manual (Page 68)

RC2500 Antenna Controller Chapter 7 Error Codes 61
Research Concepts, Inc. • 5420 Martindale Road • Shawnee, Kansas • 66218-9680 • USA www.researchconcepts.com
TRACK CONFIG
This error code indicates that at least one of the following CONFIG mode items is corrupt: Max Track
Error, Search Enable, or Search Width. See section 5.8.10.
7.2 TRACK MODE ERRORS
Should one of the following errors occur during TRACK operation, the controller will display an error
message mid-position of the second row on the display. All tracking operations will halt until the error is
corrected.
JAMMED
If the controller does not sense feedback/position changes from the resolver-to-digital converter while it
asserts the drive lines, it will halt the drive signals and display the JAMMED message. To reset the error
use the mode key to enter RESET mode and reset the axis that was shut down. See Section 5.6.
LIMIT
The controller encountered an azimuth or elevation limit during a track movement operation. This
represents a serious error because it means the limits have to be changed to allow tracking of this
satellite. When installing the antenna, be sure to set the limits wide enough to allow ample tracking over
the entire range.
RUNAWAY
This error indicates a runaway or large, unexpected position change. The controller will shut down the
drive experiencing this error and will have to be reset in RESET mode. Section 5.6
DRIVE
This error indicates a drive system fault due to over-current or drive failure. The controller will shut down
the drive experiencing this error and will have to be reset in RESET mode. Section 5.6
PEAK LIMIT
This error indicates that the antenna moved too far in either azimuth or elevation while attempting to peak
the antenna. This error is described in section 4.4.6 - Tracking Problems.
SYSTEM
System errors were summarized in section 7.1.
CHECKSUM
This error indicates the memory in the satellite's track table or header has been corrupted. The only way
to correct this error is to re-initialize the satellite by re-storing it in SETUP mode. See Section 5.5.
7.3 OPERATIONAL TROUBLESHOOTING TIPS
ANTENNA MUST BE PEAKED MANUALLY AFTER AN AUTO-MOVE
The Controller returns to approximately the correct position but must be re-peaked manually to achieve a
good signal. This is generally an indication of mechanical hysteresis (slop) between the antenna pointing
position and the position sensor. When this occurs the antenna will peak up in one position when
approaching the satellite from the west and another when approaching the satellite from the east. To test
for this, move the antenna quite a distance west of the satellite and manually move the antenna east at
slow speed until the peak is reached. Repeat the procedure when approaching the satellite from the
east. The difference in azimuth position between the 2 peaks is the mechanical hysteresis. In this