LS System. solutions for the. Smart Designer. precision high-speed proportional pneumatic systems

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1 LS System solutions for the Smart Designer precision high-speed proportional pneumatic systems

LS System Overview Create breakthrough applications and enhance existing applications Overcome speed and control barriers Decrease machine cycle time and increase throughput Increase machine and

2 LS System Overview Create breakthrough applications and enhance existing applications Overcome speed and control barriers Decrease machine cycle time and increase throughput Increase machine and process flexibility Allow rapid changeover capability Utilize advanced control with real-time feedback The LS System is a high speed, proportional pneumatic motion control system comprised of a specialized, patented servovalve and a dedicated valve controller. The LS system can be used in open loop and closed loop configurations. Linear proportionality at both the electrical and mechanical levels improves control and provides the motion fluidity that is preferred for automation, testing, and animation. The system allows unprecedented valve aperture control. Designers can use 1 valve where 2 or more are often needed, decreasing complexity and lowering both purchase and maintenance costs a simple and cost effective solution. Performance How Fast Is Fast? Proportional High Speed Linear Real Time 100% 80% Enfield Technologies vs. Solenoid Technology fully open 60% Control 40% Position Pressure Force Flow Velocity 20% ms 5ms Enfield Technologies valves high performance solenoid valve typical solenoid valve 4 to 7x faster 19.5ms fully closed 35.5ms

3 What is Proportional Control? Proportional control means that the output of a system is directly related to the input. System inputs include both a target value, which is the desired result such as a specific position, pressure, or force level, and the real-time measurement of actual progress toward that goal. With proportional control, the output of a system can be any interim value within a fixed range. For example, an air cylinder can be positioned anywhere between fully retracted and fully extended. In another example, a tank s pressure can be maintained anywhere between vacuum and full line pressure. Proportional control is a cost effective way to create systems with high flexibility and dynamic control. Enfield at Work Controlling the Crunch A branded snack food company prides itself on the product consistency its customers have come to expect. To process one of its flagship products, a frying operation seeks to accurately position the product within optimal temperature pockets in a frying bath. The temperature pockets are measurable, but unpredictable because of complex fluid dynamics, requiring the motion control system to have infinite variability. Using an array of heat sensors and an Enfield Technologies motion control system, the frying machine is able to continuously move the product quickly to the optimal position. Multiple Feedback System Design goal command valve current control air control Process Controller Enfield Technologies Valve Controller Enfield Technologies Valve Device with Sensor motor feedback goal feedback auxiliary feedback status feedback Motor Feedback Active closed loop valve current feedback monitors and manages valve s linear force motor Goal Feedback Active closed loop goal feedback monitors and manages the primary command instruction Auxiliary Feedback An optional secondary feedback allows for modification of the primary command signal; may also be used as an alternate command signal path Status Feedback Two state process status indicator; actual primary goal feedback level monitoring also possible

position) with adjustable threshold window comparator Capable of delivering high power/current output up to 2 Amperes with closed loop control Auxiliary input allows process controller (PLC, etc.

4 LS System Electronics LS-C10 Pneumatic Device Controller Faster. Smarter. Smoother. Low cost, high performance dedicated device controller Proportional gain adjustments 2 Khz square wave adjustable dither voltage source to eliminate sticktion friction Goal achieved signal (eg, at position) with adjustable threshold window comparator Capable of delivering high power/current output up to 2 Amperes with closed loop control Auxiliary input allows process controller (PLC, etc.) to use LS-C10 as a signal amplifier, conditioner, and manager 4-20 ma to 0-10 Vdc buffered voltage converter LS-C11 Sensor Signal Conditioner Accepts two external sensor inputs Onboard facility for a dual acting sensor Can process low voltage level output sensors such as pressure, force, or accelerometers Offset and Span adjustments (non-interacting) for each sensor input Individual outputs for each sensor Differential output of both sensors Electronics Specifications LS-C10 LS-C11 Power Requirements min ± 12 25W or 1.0 A ± W or 100mA Command Signal Input 0-10 Vdc or 4-20 ma ± 500 mv max or ± 10 Vdc Feedback Level 0-10 Vdc, 4-20 ma, ±10 Vdc - Auxiliary Feedback Level ± 10 Vdc - Voltage Output - ±10 2mA for ±100 psig Position Output 0-10 Vdc (±10 Vdc) - Response Time <100 µsec <100 µsec (10-90%, psig) Operating Temp. Range -25 C to +85 C -25 C to +85 C (-13 F to F) (-13 F to F) Optional Components - Onboard Pressure Transducer Dimensions 7.5 x 8.0 x 3.5 cm (3.0 x 3.1 x 1.4 ) 8.5 x 7.5 x 2.5 cm (3.3 x 3.0 x 1.0 ) Weight 125 g (4.4 oz.) 94 g (3.3 oz.) Mounting Direct mount plate using 4-40 screw

Technology Highlights Closed Loop vs. Open Loop If you want to control it you must measure it. Closed loop systems are actively managed using feedback from sensors that monitor actual performance.

Closed loop systems are needed when precision is required, when the system may be subjected to external disturbances, or when the desired value might change during a process.

Multi-signal processing capability Active valve current feedback control Continuous real-time monitoring and management of linear force motor Instantaneously corrects for external disturbances

5 Technology Highlights Closed Loop vs. Open Loop If you want to control it you must measure it. Closed loop systems are actively managed using feedback from sensors that monitor actual performance. This feedback is continuously compared to the desired value and corrective action is taken until the goal is achieved. While open loop systems are simpler, actual performance is left to chance. Closed loop systems are needed when precision is required, when the system may be subjected to external disturbances, or when the desired value might change during a process. Convergent controller circuitry Real-time command and feedback signal monitoring Signal disparity drives valve to converge on goal Analog processing yields a highly responsive overall system Multi-signal processing capability Active valve current feedback control Continuous real-time monitoring and management of linear force motor Instantaneously corrects for external disturbances Differential Pressure and Additional Feedback Path Provides additional feedback when the system requires more stability for varying load conditions Covers a wide range of transducer sensitivities LS System Specialized Circuitry LS-C10 Pneumatic Device Controller LS System Valve Multi-signal processing with convergent and additional control Linear motor drive control with active current feedback primary command signal feedback signal integrated circuit signal adjuster integrated circuit power stage alternate command signal or auxiliary feedback signal signal adjuster integrated circuit current sensor active current feedback linear force motor Enfield at Work Making Music A musical instrument company makes acoustic guitars using a hand layed-up laminating process. Enfield Technologies helps improve and speed the process by automating the form jigs with an advanced motion control system. Proportional control accurately positions the jigs for use in differing guitar designs. The automation of this activity results in a consistent and optimized production process, providing the guitar maker with flexible manufacturing and rapid changeover benefits.

LS System Valves LS-V25 Faster. Smarter. Smoother.

proportional spool movement virtually eliminates hysteresis Directly coupled lapped spool and sleeve Reliable operation for service life of millions of cycles Spool and sleeve precision matched to 3

accurate than solenoid valves Proportional, bi-directional control Directional control: 3 extreme positions with infinitely variable intermediate positions with controlled aperture Normally closed,

nickel-plated motor element Smooth, low noise, jitter free operation Linear Force Motor vs.

6 LS System Valves LS-V25 Faster. Smarter. Smoother. LS-V15 LS-V05 Technology Highlights LS System Valves Bi-directional linear force motor Single element moves valve spool in both directions High bandwidth (100Hz) is resistant to vibration Linearly proportional spool movement virtually eliminates hysteresis Directly coupled lapped spool and sleeve Reliable operation for service life of millions of cycles Spool and sleeve precision matched to 3 microns (3 millionths of an inch) Air bearing eliminates troublesome seals and reduces friction Unique, patented valve design Linear force motor with rare earth neodymium magnet Faster and more accurate than solenoid valves Proportional, bi-directional control Directional control: 3 extreme positions with infinitely variable intermediate positions with controlled aperture Normally closed, blocked center position when off Can be used as an ultra-fast on/off valve 3 sizes with different effective apertures cover a wide range of volume and mass flow capacities Rust resistant nickel-plated motor element Smooth, low noise, jitter free operation Linear Force Motor vs. Solenoid Although solenoids have been the workhorse of pneumatic valves, they are slow, non-linear, and hard to control. And, you need 2 of them for directional control. In its patented design, Enfield Technologies uses a specialized directly coupled linear force motor. This motor uses a voice-coil type winding and an intensified rare earth magnetic field. With low inertia and bi-directional control, a single valve operates in true linear fashion 4 to 7 times faster than a double solenoid valve, allowing more cycles in the same amount of time with fewer components.

ISO Symbol cm/s in/s 76.2 30 Nominal Speed Curves approximate matching of valves to cylinders (no load, closed loop control) Enfield at Work Zoom 50.8 20 25.

7 ISO Symbol cm/s in/s Nominal Speed Curves approximate matching of valves to cylinders (no load, closed loop control) Enfield at Work Zoom cylinder bore LS-V05 LS-V15 LS-V in cm An international marine engine manufacturer needs to accelerate the casting process of its aluminum engine components. Using Enfield Technologies servo-pneumatic control systems, the pressure profile of casting vessels is dynamically modified to accommodate the production of different parts on the same line. Using the same equipment for different parts eliminated changeovers, lowers capital equipment expenditures, and increases productivity. Valve Specifications LS-V05 LS-V15 LS-V25 Max. Aperture (mm 2 ) 5mm 2 15mm 2 25mm 2 Max. Valve Coefficient (C v ) Flow Capacity (@ 80 psig line pressure) 128 NI/m 345 NI/m 985 NI/m (6 SCFM) (16.21 SCFM) (46 SCFM) Wattage 3.4 Watts 3.2 Watts 2.6 Watts Maximum Effective Command Current 0.97 A 0.94 A 0.85 A (current required to open fully in either direction) Ports UNF-3B 1/8" NPTF 1/4" NPTF Dimensions (length, width, height) 6.5 x 2.5 x 3.1 cm 8.3 x 3.5 x 4.7 cm 12.8 x 5.0 x 7.7 cm (2.6" x 1" x 1.2") (3.3" x 1.4" x 1.9") (5.0" x 2.0" x 3.0") Weight 107 g (3.8 oz.) 340 g (12 oz.) 669 g (23.6 oz.) Inductance 1.7 mh Air Pressure Range vacuum to 10 bar (28" Hg vacuum to 150 psig) DC Resistance 3.6 Ω Temperature Range -23 C to +46 C ambient (-10 F to +115 F) Time Constant 0.47ms Electrical Connection 3 pin pico M8 female end cable to male screw-on valve terminal, Response Time 2.5 ms 24 AWG cable Bandwidth 100Hz Mediadry non-lubricated air, vacuum, non-flammable & non-corrosive dry gases (0.3 micron fine grade coalescing filter with 5 micron pre-filter preferred)

8 Application Development and Support Custom Product Development Repair and Testing Services Manufacturing of Servo-Pneumatic Systems Innovation and Service Enfield Technologies pledges continuous innovation and dedication to customer service. High in-stock availability and same-day shipping Prompt response to sales and technical inquiries Advanced engineering services Standard 1 year warranty and extended warranties available Volume and OEM program pricing Market-driven product development Online account management (status, history, orders, shipment tracking, customer service case management) Online resources include 2D and 3D CAD drawings, tech notes, application notes and educational materials. Direct online purchasing and charge card acceptance Enfield Technologies, LLC 41 Monroe Turnpike Trumbull, CT USA tel fax toll free North America Enfield Technologies, LLC. All rights reserved. Enfield Technologies name and logo are trademarked. These products are protected by one or more of the following US patents: 5,960,831 and 5,460,201. Caution: Installation and operation of electronic and compressed air systems involves risk. Users should be appropriately trained and take appropriate safety precautions. ver

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