Removal and replacement of ADU modules
98-133966-G1
Chapter 8: Service & maintenance
8-41
8888
Service & maintenance
8.5.8
Replacing motor and encoder
The ADU is equipped with three (3) DC-motors, two of which are
identical, and one (1) step motor, for the axes:
• Elevation (DC motor).
• Azimuth (DC motor).
• Cross Elevation (DC motor).
• Polarisation motor (step motor).
The DC-motors are all brush less motors, controlled by their individual
DDM. The step motor is controlled by its PMM. To each of the DC-
motors and step motor a corresponding encoder provides feedback of
its position.
For step-by-step instructions see:
Removing the Elevation Motor and Encoder
Inserting a new Elevation Motor and Encoder
Inserting a new Azimuth Encoder
Removing the X Elevation Motor and Encoder
Inserting a new X Elevation Motor and Encoder
Removing the Polarisation Motor
Inserting a new Polarisation Motor
Removing the Polarisation Encoder
Inserting a new Polarisation Encoder
Figure 8-45: Motors and encoders
Polarisation encoder
Polarisation
motor
Azimuth encoder
Azimuth motor
Elevation
motor & encoder
X elevation
motor & encoder
SAILOR900TM.book Page 41 Monday, September 16, 2013 11:01 AM
Содержание Sailor 900 VSAT
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Страница 257: ...Appendices SAILOR900TM book Page 1 Monday September 16 2013 11 01 AM ...
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Страница 338: ...CE R TTE H 2 Appendix H Approvals 98 133966 G1 SAILOR900TM book Page 2 Monday September 16 2013 11 01 AM ...
Страница 340: ...Eutelsat S A H 4 Appendix H Approvals 98 133966 G1 SAILOR900TM book Page 4 Monday September 16 2013 11 01 AM ...
Страница 354: ...Index 10 Chapter Index 98 133966 G1 SAILOR900TM book Page 10 Monday September 16 2013 11 01 AM ...
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