Sensing and Control Make Possible Autopad Linear Position Sensor Features: Absolute non-contact inductive position technology Passive target Senses through non-conductive materials and fluids (e.g. plastic, glass, oil, water) Custom ASIC provides 12bit resolution Analogue 0-5V or 4-20mA output Fast response time Linear travel: 75mm, 150mm, 250mm OEM versions available customised to the requirements of your application Our advantage: No contact between target and sensor so parts cannot wear out Simple and robust construction with proven reliability; >40million Autopad sensors in the field Excellent immunity to external electromagnetic fields Completely immune to magnetic fields Immune to dirt and dust Good tolerance to geometric offsets Cost competitive performance Application General sensing applications, especially where: Reliability and ease of use are important Large magnetic fields and/or harsh EMC requirements (e.g. near motors) High vibration environments (e.g. pumps, heavy machinery) (c) Copyright TT Electronics, 2012. All rights reserved. Subject to change without prior notification. Issue: 2014.1 Wet and/or dirty environments For example, industrial automation, process control, valve positioning, materials handling, injection moulding, cutting & slitting, welding, CNC machines, hydraulic cylinders, robotics Autopad Linear Position Sensor Output Output 4.75 V / 20 mA - out of range 0.25 V / 4 mA - out of range 0 V / 0 mA - no signal Sensing Range ( ) General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics' own data and is considered accurate at time of going to print. www.ttabconnectors.com www.ttelectronics.com (c) TT Electronics plc 11.14 Sensing and Control Make Possible Autopad Linear Position Sensor Autopad Linear Position Sensor Technology Puck Pad Originally developed for demanding automotive applications, Autopad is an inductive technology which is now available for use in industrial applications. The key components are a sensor element (or Pad), a target (or Puck) and electronics, based around a proprietary ASIC. The Pad includes two PCB track structures which each form transmitter coils. These generate sine and cosine shaped spatial electromagnetic fields. The moving target is formed by a simple LC resonant circuit - the Puck. The transmitter coils are driven with a high frequency carrier (at the Puck resonant frequency), but modulated at a lower frequency in quadrature. These fields couple to the Puck and the cumulative current generated in the Puck depends on its position. The alternating field produced by the Puck induces a voltage in a third coil on the Pad -- the receiver coil. The ASIC synchronously detects this voltage signal, leaving only the modulated signal. The phase of this modulated signal is then calculated and gives a direct measurement of the Puck position. The technology can be configured for specific applications - for example, to suit a specific geometry, or with a high resolution and accuracy coarse/fine output, or with redundant output for increased reliability. Specification Interface Power supply Current consumption Sensing Range (L) Nominal target-sensor separation Analogue: 0-5V ratiometric 4.5 - 5.5V DC 20 mA Sense through nonconductive material (eg: plastic, water, oil) Linearity Hysteresis Magnetic field resistance Resolution Update rate Operating Temperature Storage temperature Electrical connections Output load Reverse polarity Overvoltage protection Cable length Sealing Approvals Analogue: 0-5V 7-25V DC 15 mA (24V) 75mm / 150mm / 250mm 2mm +/- 1.5mm 4-20mA 24V 40 mA Yes 1% full scale output None Complete Immunity 12 bit 250s -20 to 85C -40 to 125C Brown: V+, Black: Output, Blue: Gnd >1k Yes Yes, to 40 V 0.5m IP67 CE, ROHS & WEEE General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics' own data and is considered accurate at time of going to print. www.ttabconnectors.com www.ttelectronics.com (c) TT Electronics plc 11.14 Puck Sensing and Control Pad Make Possible Autopad Linear Position Sensor Drawings & Installation Part Numbers A P 0 Technology AP0 = Autopad - 0 7 5 - 0 0 1 - Sensing Range Output 075 = 75mm 150 = 150mm 250 = 250mm 001=0-5V O/P ratiometric 002=0-5V O/P, 7-24V supply 003=4-20mA O/P, 24V supply 0 0 0 Undefined General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics' own data and is considered accurate at time of going to print. www.ttabconnectors.com www.ttelectronics.com (c) TT Electronics plc 11.14