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August 2 and 3, 2010
KOSMOS INSTRUMENT ELECTRONICS (IE)
Dan PappalardoOhio State University
Department of Astronomy
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KOSMOS IE
• What is included in Instrument Control?– Motor/Mechanism control– Position feedback– Process variable indication– Any I&C that is not image
acquisition/detector control
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MODS/OSMOS IE FEATURES
• All mechanisms use stepper motors• All mechanism control channels use
identical controller• All mechanisms use identical cabling• Multiple mechanisms can be moved
simultaneously, typically about 4.
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KOSMOS IE = OSMOS IE
• Mechanism suite• Microlynx 7 motor controller• Comtrol Serial Port Server• Wago I/O node• Item Frame and internal panels• OSU Motor Board• Power Supply (65VDC)
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Inst Electronics System Diagram
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WAGO 750 I/O SYSTEM ML7 MOTOR CONTROLLERS
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KOSMOS IE ≠ OSMOS IE
• Different shutter and non-OSU camera electronics may have shutter control going through IE
• Shutter has position feedback via RS-232 which could be read by IE
• Low power sleep mode that shuts off 65V power and motor controllers will be added.