Advent Communications
209297 – DCU5000 Drive Control Unit Page 15 of 42
4.8. F7: FREEWHEEL DETECTED
A drive axis freewheel has been detected. It is possible that a freewheel on a drive
display can clear itself and this alarm shows the cause of the axis becoming
uncalibrated.
Possible causes:
Axis hitting physical end stop.
Moving antenna under high wind or snow loading.
This alarm is latched, and has to be cleared through the alarm clear menu option.
4.9. F8: END OF TRAVEL DETECTED
A drive axis travel limit has been detected. The axis causing this will become
uncalibrated.
Possible causes:
Severe axis stall or freewheel causing the calculated angle which the soft stop
uses to be seriously in error.
4.10. F9: TX POL SWITCH FAILED
The TX polarisation switch, if fitted, has been detected in an illegal state or will not
respond to switch commands. Possible causes:
Manual operation of the switch with the DCU on will trigger this alarm.
Switch is disconnected.
Switch is stuck or jammed.
4.11. F10: AZIMUTH STOW SENSOR FAILED
The sensor used to detect the azimuth tab markers has failed. Possible causes:
Sensor disconnected.
Sensor failure.
Metal stuck in sensor.
4.12. F11: ELEVATION STOW SENSOR FAILED
The sensor used to detect the elevation tab markers has failed. Possible causes:
Sensor disconnected.
Sensor failure.
Metal stuck in sensor.
4.13. F12: POL STOW SENSOR FAILED
The sensor used to detect the polarisation markers has failed. Possible causes:
Sensor disconnected.
Sensor failure.
Metal stuck in sensor.
4.14. F13: EL DP SENSOR FAILED
Currently not used in the DCU5000 system. If seen please report the occurrence to
Advent Communications customer support.
4.15. F14: FA DP SENSOR FAILED
Currently not used in the DCU5000 system. If seen please report the occurrence to
Advent Communications customer support.
4.16. F15: EL STOWED SENSOR FAILED
Currently not used in the DCU5000 system. If seen please report the occurrence to
Advent Communications customer support.
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