Project: DEIMOS
Stage: Grating Tilt #3
ID #: KDGC-003A
Engineer: J. Osborne

Mechanical Description of Stage: 6" X 8" grating rotator. Tilt angle is maintained even when out of position. (e.g. no "Home"-ing is required.)

Electronic Description of Stage:

Required setting accuracy: Sub arc-second!

1. Speed, temperature, accuracies, electrical power, pressurized air, lubricant, coolant, N2 purge, ...
2. Primary (inner) and secondary (outer) limits. These can be magnetic, optical, or physical contact

1. Uphill defined as motor (or driven end of shaft) in lowest position

1. "Coarse" if from optical interupter, "Fine" if from an encoder index pulse. Home is defined as zero counts.
2. Primary limits signal the controller to stop motion. Secondary limits cut motor power and require intervention to move out of them.

• Gear reduction function: Two stages of friction drive plus timing belt and sprocket:  923.9 X 60/24 = 2309.75

• Backlash:
• Forward:
• Reverse:

• Repeatability:
• Forward:
• Reverse:
• Fiducial:
• Type:
• Location:
• Encoder:
• On motor:
• On stage:
• Air Cylinders:
• Air Solenoids:
• Air pressure:

NOTES:

Electronic Drawing(s) #EL-3062 and EL-3063

Sign conventions are such that a positive motion of the motor turns the motor in a CW direction as viewed from the drive shaft looking back into the motor, and will drive the stage towards the forward limit.