Computerized Motion Control (CMC-4)

 

The minimum micro-step move is 49 nm. The system has an accuracy and repeatability of approximately 0.5 micrometers. The following specifications are listed for you:

Motorized Drives:

  • Travel: 1.25"/ 2.00" (30 mm / 50 mm)
  • Speed: Up to 2 mm/sec no load
  • Positioning Accuracy: ~ 0.2% of travel
  • Bi-directional Repeatability: ~ 1.0 micron
  • Minimum Incremental Motion: 0.003 to 0.8 µm

Translator Stages:

  • Angular Deviation: ~ 200 mrad
  • Centered Load Capacity: 35 / 47 lb (16 / 19 kg)
  • Vertical Load Capacity: 15 lb (6.8 kg)
  • Threaded holes: 1/4-20 on 1" centers or M6x1.0 on 25mm centers

Lead Screw - 80 Threads / inch (80 revolutions / inch)

(1 / 80 x 25.4 x 103 = µm / revolution)
317.5 µm / revolution

Step Motor - 400 full steps / revolution.

(317.5 µm / 400 = 0.79375 µm / step)(400 / 317.5 = 1.2598 full steps / µm)

Controller - 16 micro-steps / full step. (See IM 483 manual)

1.2598 full steps / µm.
(16 x 1.2598 = 20.157 micro-steps / µm.)
(1 µm / 20.157 = .04906 µm / micro-step)

 

Three acceleration profiles are supported. They are best described with the following graphs: