Kaman Aerospace Corporation
Kaman Precision Products
Copyright © 2019
PART NO: 860510-001A
Last Revised: 2019.10.22
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.
