Kaman ThreadChecker User Manual

TM
ThreadChecker
Universal
Noncontact Thread Detection
System User’s Manual
Copyright © 2008 Kaman Aerospace Corporation PART NO: 860510-001A Kaman Precision Products Last Revised: 6/8/11 Measuring & Memory Systems 217 Smith Street Middletown, CT 06457 www.kamansensors.com or 860-632-4442
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This apparatus, when installed and operated per the manufacturer’s recommendations, conforms with the protection requirements of EC Council Directive 89/336/EEC on the approximation of the laws of the member states relating to Electromagnetic Compatibility. Please refer to the Declaration of Conformity or contact Kaman Precision Products for details.
Copyright © 2008 Kaman Aerospace Corporation PART NO: 860510-001A Kaman Precision Products Last Revised: 6/8/11 Measuring & Memory Systems 217 Smith Street Middletown, CT 06457 www.kamansensors.com or 860-632-4442
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ThreadChecker Universal
Kaman’s ThreadChecker Measuring System is a noncontact linear proximity measuring system. This low-cost, easy-to-use system makes precision static and dynamic measurements of the presence or absence of a thread.
Features Summary / Advantages
Easy to Use
Universal Electronics for All Sensor Types and Target Types
Built in Self Test
Small size for efficient system integration: less than 4 cubic inches (80cc)
Flexible packaging and performance.
Several sensor options.
Flexible Switched Output Options (window or level comparator / inversion of limit)
available to user
Low power consumption ThreadChecker Unit
The ThreadChecker system consists of two subassemblies: the sensor with integrated cable, and the signal conditioning electronics module with power and output cable. The ThreadChecker electronics uses a standard 24AWG cable to bring +15 Vdc to +30 Vdc into the electronics and provide outputs for the analog voltage and switch functions.
Theory of Operation
The ThreadChecker system is an eddy current system. The sensor coil is resonated and the amount of impedance change in the output is measured by the electronics. The proximity of the target to the sensor coil will cause the sensor coil to change impedance.
The signal is then processed and filtered to obtain an analog voltage proportional to the target position or displacement.
Cable Connections and Power I/O Cable Color Chart:
Wire Color Signal
BROWN Vin 15-30vdc
BLUE GND WHITE SWITCHED OUTPUT BLACK Vout 0-10v
Copyright © 2008 Kaman Aerospace Corporation PART NO: 860510-001A Kaman Precision Products Last Revised: 6/8/11 Measuring & Memory Systems 217 Smith Street Middletown, CT 06457 www.kamansensors.com or 860-632-4442
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Electronics The ThreadChecker electronics has one switch and two LEDs visible in the enclosure to provide various setup and status functions. The power led indicates that power is applied and everything is functional if it is green. Red or flashing red on the power LED indicates a problem. The thread or status LED indicates the presence or absence of a thread or teach status (see application information). The ThreadChecker electronics and sensors utilize SMA type coaxial connectors: female on the electronics, and male on the sensor cable. Four probe configurations for detecting internal threads are currently available from 2mm to 10mm, and two probe configurations for detecting external threads are available, more configurations are created regularly (check with Kaman sales for current configurations). The sensor must be attached snugly (finger tight) to the electronics assembly for the unit to function properly.
Adjustment and Calibration The ThreadChecker requires calibration to the users configuration before use. NOTE: solid red on the power LED means that it does not recognize the sensor or the sensor is disconnected. If the sensor is connected and this condition persists after a teach then the electronics does not recognize the sensor and it may be faulty.
The switched output can be adjusted using the teach modes. See application information for more details.
Switched Output Operation The ThreadChecker’s switched output is a simple on / off switch. The switch can be adjusted to trip anywhere along the sensor range using application teach modes.
Cleaning The ThreadChecker is designed to have limited operation while immersed in liquids. Some solvents may damage electronics module, sensor, or power I/O cable. Clean the unit with a damp cloth.
EMI Performance
The ThreadChecker conforms with the applicable standards of Council Directive for Generic for Light Industrial and Commercial Use. Under some EMI environments, at specific frequencies, the ThreadChecker unit may experience a change in output voltage. In general, when exposed to those environments covered by the EMC directive, the user can expect less than 5% deviation of output. Contact Kaman for specific data or for recommended solutions if you experience problems with the ThreadChecker.
Copyright © 2008 Kaman Aerospace Corporation PART NO: 860510-001A Kaman Precision Products Last Revised: 6/8/11 Measuring & Memory Systems 217 Smith Street Middletown, CT 06457 www.kamansensors.com or 860-632-4442
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