Kaman ThreadChecker Manuel d'utilisateur télécharger pdf (Page 6)

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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The Switched output

This is an opto-coupled solid-state relay. While the switched output can handle a

substantial amount of voltage & current (see specifications) it is not infinite. Connect

external devices accordingly. There are two modes of operation for the switched

output: Window comparator and compatibility/level comparator mode. You can easily

switch between the two modes by holding down the button on power up. It will

remember the last mode it was set up for the next time you power on. The ‘ON’ polarity

of the switch can also be inverted. Operation is as follows:

Standard Window Comparator Mode

In standard mode it is a ‘window’ comparator. The switch will be closed (to ground)

when it detects a threaded (or “good”) hole. Otherwise the switch will be open.

Compatibility (Level comparator) Mode

In ‘compatibility’ mode the switch is open when detecting no thread, and closed (to

ground) when it detects a thread or open air.

Inverting the Switch Polarity

The polarity of this output can be inverted (in either mode) so that the open and closed

stated are reversed. To do this; after the unit is powered on, press and hold the teach

button on the unit for more than 10 seconds. To re-invert the output press and hold the

teach button for more than 10 seconds after the unit has been powered on. Note that

in compatibility mode the status led mirrors the opto-isolated switch state.

The Analog Output

The analog output will read a 5V difference between the threaded and unthreaded

holes after calibration. The ‘air’ (i.e. no target) value will always be the highest voltage

and will be at or near saturation (10V). The direction of the output depends on the

sensor and target type but typically for aluminum targets the system will read 7.5V on

the threaded hole and 2.5V on the unthreaded hole while for magnetic (or ferrous)

target it will read 7.5V on the unthreaded hole and 2.5V on the threaded hole. For

small diameter sensors in large diameter holes there ends up being a substantial

amount of gain on the analog output and so it may appear to be noisy.

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Kaman ThreadChecker Manuel d'utilisateur Page 6