User manual

when approaching the satellite from the azimuth clockwise direction and another
when approaching the satellite from the azimuth counter-clockwise direction. To
test for this, move the antenna well past the satellite in the azimuth clockwise
direction and then manually move the antenna counter-clockwise at slow speed
until the peak is reached. Repeat the procedure approaching the satellite from the
opposite direction. The difference in azimuth position between the 2 peaks is the
mechanical hysteresis. If mechanical hysteresis exists try to eliminate the it. If
this is not possible, always approach each satellite from the same direction as it
was approached when the satellite was originally programmed into memory.
THE ANTENNA AZIM ERROR or ANTENNA ELEV ERROR OCCUR
To determine the cause of this error, go the RESET mode. One of the following
error messages will be displayed: JAMMED, RUNAWAY, or DRIVE. Here are
the likely causes of each of these errors:
JAMMED
This error indicates that the drive was commanded to move, but movement was
not sensed. This can be caused by a mechanical jam at the antenna, or the
antenna may be moving but position feedback pulses are not getting back to the
controller. Determine which condition exists.
If the antenna is not moving there may either be a faulty motor, a wiring problem,
a mechanical limit switch has been encountered, or the breaker in the drive circuit
has tripped (the breaker may be reset from the back of the unit). If the antenna is
moving but position pulses are not reaching the controller, check the sensor
wiring of the sensor module in the antenna actuator.
RUNAWAY
This error occurs when position pulses are recorded but the antenna has not been
commanded to move. Check the items listed in Section 3.2 - Azimuth and
Elevation Position Sense. If this error occurs just after the antenna has been
moving and the drive signals are released, review the 'Deadband’ CONFIG mode
items described at the end of section 4.10.8. Also see the paragraph in this section
entitled ‘CONFIGURING THE RUNAWAY SENSING SYTEM’.
DRIVE
This error indicates that the controller's electronic over-current sensing has
detected an over-current condition and has shut the drive down. There are pots
which control the level at which the electronic over-current sensing trips. These
pots may have to be adjusted. Please consult the factory. Under no
circumstances should the load current supplied by the controller be allowed to
exceed 8 amps for more than several seconds.
THE AUTOPOL SYSTEM DOES NOT SEEM TO WORK PROPERLY
This error is usually caused by the horizontal and vertical polarizations for a
given satellite being programmed at the same position. If you turn off the