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Saturday, July 31, 2010 
 
  WS-650 display (simulated)
click to enlarge
 
Laurell WS-650 Process Controller  
  • Designed specifically for ease of use 
  • Simple to program from the operator panel or your PC
  • Ability to allow process inputs from external sources
  • Designed specifically for continuous process development...
  • Operational statistics stored...continuously & permanently

Truly Unique Interactive Process Control:

  • You may now interact freely with the process or allow process inputs to direct  actions in a pre-determined way.
  • Rotate forward, reverse, or agitate back & forth (cyclically changing direction (programmed in cycles per minute)
  • Go backwards and forwards within a running program
  • Loop a sequence of instructions either waiting for an external input or just repeat it up to 255 times.
  • Change speed or acceleration rate on the fly - while running in edit mode
  • Virtually unlimited number of programs with included PC interface software)
  • Actual process, chemical, sensor names are displayed, not cryptic numbers, letters or symbols.
  • Clear messages for alarms, failures, and deficiencies indicating what is wrong
  • Each program step can be conditionally interlocked with multi-directed action
  • Step forward, step backwards, pause, stop or start within edit or run modes
  • Digital inputs (read and direct process based on: end-point detection, resistivity, temperature, pressure, level sensors, exhaust flow, safety interlocks...)
  • Digital outputs (control - valves, mixers, dampers, alarms...)
  • *Acceleration (programmable in 1 RPM/Sec. increments)
  • Speeds as slow as 1 RPM or as high as *12,000 RPM     

Standard features include:

  • Digital readout of closed loop speed control
  • Non-Volatile memory  
  • Acceleration/deceleration rate programmable in every step
  • Convenient twenty, 51 step program storage (can be rearranged in the field to a maximum of 128 programs with 8 steps each, and a minimum of 5 programs with 255 steps each if desired)
  • Looping allows each step to be repeated up to 255 times
  • Vacuum and lid interlocks - display of actual vacuum at the wafer (will not allow rotation if hold-down force is insufficient) the set point is user adjustable
  • Step time from 1 second to 99 minutes 59.9 seconds in 0.1 second increments
  • Design precludes accidentally re-running a process on the same wafer
  • Password-protected (lock programs, assign different levels access)
  • Standard communications port for PC software included - see SPIN3000

Operation:

Familiar keypad - function-oriented interface panel and graphic back-lighted information display make the learning curve just a few minutes to program and use.

*may be restricted to lower speed or accel. rate based upon substrate size, weight or chuck type


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