Swing Arm Installation

• wiki: Swing arm installation day log
• Installation schedule with pictures as word document
• Report on the absolute encoder measurements
• Report on the laser tracker measurements (open)

Personal MPIA

• ML - Michael Lehmitz
• WG - Wolfgang Gaessler

Personal LBTO

• Technician
• scissor lift
• crane
• telescope
• electronical
• mechanical

Dates

• June 13 and backup June 27-30 cable trail installation second round - Steward
• Start packing latest July 5 - MPIA
• Shipping latest July 10 - MPIA
• Delivery 18 July - LBTO
• Pad mount 1-14 August
• Swing arm installation 15-23 August

What to take back

• measurement/picture on harbor for final design
  • LUCI interfacing
  • position on windbrace
  • positioning for dust cover
• measurement/picture on collision switch

Detailed schedule

15.08 Unpacking and preparation (3h)

• WG, ML, LBT technician
• crane(LBT), all the boxes delivered(MPIA), swing arm cabinet powered locally and connected to rotate the axis
• telescope on horizon

Installation of SX cabinet (5h)

• WG, ML, HG, LBT technician
• scissor lift(LBT), crane(LBT), Cabinet (MPIA), cabinet mounts (MPE through MPIA), screws (??)
• telescope on horizon

16.08 Installation of Junction Box (4h)

• ML, LBT technician
• scissor lift (LBT), crane (LBT)
• telescope on horizon

Power cable and interlock cable installation from junction box to cabinet (4h)

• WG, ML, LBT technician electronics, telescope operator
• scissor lift(LBT), power cables (MPIA)
• telescope on horizon

17.08 Temporary cabling of swing arms for movement of drilling template (2h)

• ML, LBT technician
• scissor lift (LBT), crane (LBT)
• telescope on horizon

Installation of SX swing arm (3h)

• WG, HG, LBT technician
• scissor lift (LBT), crane(LBT), SX swing arm + attachment screws (MPIA)
• telescope on horizon

Installation of DX swing arm (3h)

• WG, HG, LBT technician
• scissor lift(LBT), crane(LBT), DX swing arm + attachment screws (MPIA), washer plate (LBT?)
• telescope on horizon

18.08 Motor cable installation from Motor to cabinet (6h)

• WG, ML, LBT technician electronics, telescope operator
• scissor lift(LBT), motor cables (MPIA), flexible conduct (LBT/Steward)
• telescope on horizon
• TBD if the flexible conduct will be attached to the telescope on the fly or later. How much drilling is needed?

Verification of Swing arm electronics and interlocks not moving the arm (check interlocks with web interface) (2h)

• WG, ML, LBT technician
• laptop (MPIA), network extension from swing arm cabinet to save place (LBT)
• telescope on horizon

19.08 Absolut encoder installation (4h)

• WG, ML, LBT technician, telescope operator
• scissor lift(LBT), laptop (MPIA), network extension from swing arm cabinet to save place (LBT)
• telescope on zenith and horizon

Harbor installation (4h)

• WG, ML, LBT technician
• scissor lift(LBT)
• telescope on horizon

20.08 Verification motion control (2h)

• WG, ML, LBT technician, telescope operator
• laptop (MPIA), network extension from swing arm cabinet to save place (LBT)
• telescope on zenith

Adjust the limit switches, index switches and travel ranges with final verification (4h)

• WG, ML, LBT technician, telescope operator
• scissor lift(LBT), laptop (MPIA), network extension from swing arm cabinet to save place (LBT)
• telescope on zenith and horizon

21.08 Contingency

22.08 Test of swing arm adjustment with laser tracker and position verification

• WG, LBT technician: telescope operator, laser tracker operator
• scissor lift(LBT), laptop (MPIA), adjustment tools (MPIA), laser tracker + retro reflector (LBT)
• telescope on zenith and horizon

23.08 Test of swing arm adjustment with laser tracker and position verification

• WG, LBT technician: telescope operator, laser tracker operator
• scissor lift(LBT), laptop (MPIA), adjustment tools (MPIA), laser tracker + retro reflector (LBT)
• telescope on zenith and horizon

General Task list

• Mount points prepared
  • gluing of lower mount
  • drilling in upper and lower mount
• The swing arm will be delivered fully mounted

TODO

1. After gluing attach again the drilling template
2. Turn arm
3. Remove drilling template
4. Lift arm to mounting point
5. Attach arm
6. Measure the mount depth for absolute encoder
7. Install absolute encoder

~ 2 days (1 day per arm) partially in parallel with electronic installation possible.

Electronic installation

• SCP ready
• Cabinet mount point prepared
• Cabinet and cabling delivered
• ARGOS cable trail installed
• [With 4.] Swing arms installed

TODO

1. Installation of SX cabinet (1 day ML/WG, LBTO - telescope, crane, tools, scissor lift)
2. Cable installation SCP in tree house to Cabinet (1 day ML, LBTO - telescope, crane, electrician, tools, scissor lift)
   • Cabling SCP - cabinet
   • Power + Interlock (different cable trails?)
   • Cabinet side ready for plugging, SCP side prepared for finishing
   • Finishing connection to SCP
   • Connecting cable to cabinet
3. Verification of Interlock and electronic with ARGOS swing arm simulator, ARGOS in simulation (1/2 day ML/WG, LBTO - mount control, telescope, scissor lift)
   • Check interlock with mount control (for possible cases see ARGOS-MPIA-VER-ELE-001-SwingArmController)
4. Cable installation cabinet SX to motor SX and motor DX (1 day ML/WG, LBTO - telescope, crane, electrician, tools, scissor lift)
   • Cabling cabinet SX - motor SX
   • Connect cables to cabinet
   • Connect cables to motor
   • Cabling cabinet SX - motor DX
   • Cabling cabinet SX - motor SX
5. Verification motion control (1/2 day ML/WG)
   • relative movements and some switch checking
6. Adjust the limit switches, index switches and travel ranges. (1/2 day ML/WG, LBTO - telescope, scissor lift)

~ 4 1/2 days