STACIS - Model III -Advanced Active Vibration Cancellation System

Initially designed to isolate precision microlithography, metrology, and inspection equipment in advanced semiconductor factories, STACIS is now the industry standard solution for the most sensitive instruments in noisy environments, including but not limited to semiconductor fabs, failure analysis labs, nanotechnology research, nanofabrication facilities, and materials research.

STACIS III includes a new and improved digital controller, the DC-2020. With a new dual-core processor and Ethernet as well as USB serial ports on the front and rear panels, this new advanced control system provides the user with a modern and easy to use Graphical User Interface (GUI). With many hundreds of successful installations worldwide, STACIS is the ideal vibration cancellation system for the most vibration-sensitive instruments.

Hundreds of times stiffer than air isolators, STACIS suffers from none of the limitations of air vibration isolation systems. There is no "soft" suspension and, unlike active air systems, STACIS can be placed beneath a tool with an internal active air isolation system with both systems fully optimized.

The unique serial design and proprietary high-force piezoelectric technology 
results in a wide active bandwidth from 0.6 Hz to 150 Hz and unmatched, truly active vibration isolation with 90% vibration reduction starting at 2 Hz.

Performance Specifications

• Active degrees of freedom : 6
• Active bandwidth : 0.6 Hz - 150 Hz
• Passive natural frequency : 18 Hz vertical and horizontal
• Effective active resonant frequency : 0.5 Hz
• Isolation at 1 Hz : 40% - 70%
• Isolation at ≥2 Hz : ≥90%
• Settling time after a 10 lb (4.5 kg) step input (10:1 reduction) : 0.3 sec
• Internal noise :
• Operating load range per isolator : Low capacity: 400-1100 lbs (182-500 kg)
• Med capacity: 900-2100 lbs (410-955 kg)
• Hi capacity: 1900-4500 lbs (864-2045 kg)
• Stiffness (1000 lb / 454 kg mass, Med capacity isolator) : 40,000 lb/in. (73 x 105 N/m)
• Magnetic field emitted at maximum 4 in.(102 mm) from the isolator

Isolator Design, Dimensions, and Environmental and Utility Requirements

• Environmental and safety : CE and RoHS compliant
• Active isolation elements : Piezoelectric actuators with minimum 3300 lb. (1500 kg) capacity receive signal from a high-voltage amplifier with an output of up to 800 VDC. Vertical actuators support the isolated payload.
• Passive isolation element : single stiff isotropic elastomer (no compressed air supply required)
• Vibration sensor elements : downward facing geophone type inertial sensors that measure floor vibration below the isolator and deliver voltage proportional to the velocity of vibration motion
• Active feedback control loop : Floor vibration is measured, processed and attenuated below the spring supporting the isolated surface
• Isolator dimensions (WxDxH) : 11.75 x 12.5 x 10.8 in.
• 300 x 320 x 275 mm
• Isolator weight : 75 lb (34 kg)
• Operating temperature : 50° - 90° F 10° - 32° C
• Storage temperature : -40° - 130° F -40° - 55° C
• Humidity : 80% Maximum at 68 degrees F (20 degrees C), Maximum dewpoint: 18 degrees C
• System power requirements : 100, 120, 230, 240 VAC
• 50/60 Hz AC;
• CE compliant
• Floor displacement :
• Isolator count per system : minimum of 3
• Options : laminated stainless steel platforms, frames, risers, leveling devices, earthquake restraints, lifthoods

DC-2020 Controller Specifications

• Dimensions (WxDxH) : 19 x 8.5 x 1.75 in.
• 483 x 216 x 45 mm
• Weight : 6.3 lb (2.9 kg)
• Processor : 150/75 MHz dual core
• Sampling rate : 10 kHz
• Analog outputs : 16 channels
• Analog inputs : 16 channels
• Status light : single LED
• Front panel ports :
• 1x serial USB 2.0
• 1x serial Micro-USB
• 1x Ethernet RJ-45
• 2x BNC
• Rear panel ports : 
• 1x serial USB 2.0
• 1x Ethernet RJ-45
• 1x RS-232 DB-9 legacy serial for legacy STACIS 2100 isolators
• User interface : Front panel LCD display
• Character menu on HyperTerminal
• Extended GUI for Microsoft Windows
• Embedded Ethernet GUI