AMETEK 955DQ Brik LDT - Manual (Page 4)

4 1080 N. Crooks Road • Clawson, MI 48017 • 800.635.0289 • 248.435.0700 • Fax 248.435.8120 • www.AMETEKAPT.com
Overview
The Series 955DQ BRIK with Quadrature Output is an
accurate, auto-tuning, non-contact, Linear Displacement
Transducer in an economical, low profile package. The
transducer utilizes our field proven magnetostrictive
technology to give absolute position, repeatable to .006%
of the sensing distance. The streamlined anodized
aluminum extrusion houses the sensing element and
electronics. The magnet moves over the sensing
element that determines the position and converts it to
incremental outputs.
Features
The 955DQ has a truly unique feature. This LDT has
auto-tuning capability, the ability to sense a magnet other
than the standard slide magnet and adjust its signal
strength accordingly.
There is an indicator LED that is located at the connector
end of the probe and provides visual status information
regarding the operation of the probe. Green indicates
proper or normal operation. Red indicates the loss of
the magnetic signal or a probe failure. When the probe
is in the normal mode of operation, the LED with remain
illuminated continuously.
LED Colors
Green Magnet is present and within the active range.
Red Fault, the LDT has lost its signal from the magnet or the
magnet has moved into the Null or Dead zone.
Yellow Used when in the communication/program mode.
Note: The series number on your LDT is a record of all
the specific characteristics that make up your unit. This
includes what interface type it is, its output signal and
range, the type of connector the unit uses, and stroke
length. For a translation of the model number, see
Section 3.8 Catalog Numbering System.
The 955DQ BRIK with Quadrature Output provides an
A quad B digital output signal that is proportional to the
position of the slide magnet assembly along the length
of the probe. The quadrature output makes it possible
to have a direct interface to virtually any incremental
encoder input or counter card, eliminating costly absolute
encoder converters and special PLC interface modules.
This model can be ordered with 1 to 9999 cycles per inch
of output resolution. The transducer features an input to
re-zero the probe “on the fly”. Another unique feature is
the “Burst” mode. An input on the transducer triggers a
data transfer of all the incremental position data relative
to the transducer’s absolute zero position. This is how
the incremental output can provide absolute functionality.
The “Burst” input can be used to achieve absolute
position updates when power is restored to the system
or anytime an update is needed to re-zero or home the
machine without having to move the machine.
Chapter 1 Hardware Overview