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LBT Q1 2007 Engineering Review

LBT Q1 2007 Engineering Review. MCSC Mount Control System. Highlights (Q1/2007). No planned work during Q1/2007 ELFR motor brushes failed March 15, damaging the motor windings. The motor is now operational but winding damage may impact its lifespan. Open Issues. Technical

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LBT Q1 2007 Engineering Review

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  1. LBT Q1 2007 Engineering Review MCSC Mount Control System

  2. Highlights (Q1/2007) • No planned work during Q1/2007 • ELFR motor brushes failed March 15, damaging the motor windings. The motor is now operational but winding damage may impact its lifespan. LBT Q1 2007 Engineering Review

  3. Open Issues • Technical • Azimuth main encoder • Installation of remaining elevation main encoder read heads • Motor encoder jumps • Occasional unexplained elevation tracking errors • ELFR motor winding damage • All brushes must be inspected and replaced if necessary • Schedule • None • Financial • None • Resource • MCS competing for resources against rotator development effort • Unable to access elevation motors due to safety concerns LBT Q1 2007 Engineering Review

  4. Progress (Q1/2007) • Unexplained elevation tracking errors now appear to be linked to the HBS runout • Encoder jumps have apparently subsided since ELFR motor brush replacement LBT Q1 2007 Engineering Review

  5. Planning (Q2/2007) • April 25 : • Azimuth main encoder review • May 14 : • Farrand Controls visits • May 22 : • Elevation encoder heads installed • May 21-24 : • Elevation and azimuth motor encoder tests • Azimuth and elevation servo maintenance • TBD: • Elevation motor brush inspection and replacement • TBD: • Azimuth main encoder rework LBT Q1 2007 Engineering Review

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