prodis
®
Digital Process Meter PD-INC
Version 2.1.0
www.asm-sensor.com
9
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Description
The process meter prodis
®
-INC is designed for use with incremental -position sensors to display angles and
displacements. The fast counter processes 90° phase shifted A,B signals (quadrature signals) for direction
and counting information. When using ASM sensors resolutions up to 5 µm resp. 2 angular minutes are
possible. The sensor excitation voltage is supplied from the meter.
With four membrane keys all parameters can be programmed for the -special application. An index pulse
and a reference switch can be used for calibration of the measurement system. Optional comparator function
with two relays and four NPN open-collector outputs are available. With the RS-232 interface data can be
transmitted easily to a PC, printer or PLC.
Quadrature signal A
Quadrature signal B
Zero or Index signal Z
Reference signal T
(multiple function)
The reset of the display takes place for the condition (A & B & Z) resp. (A & B & Z & T).
The
Zero signal
is a pulse signal unique within the measurement range and explicit to the phase of the
quadrature signal to reset the prodis
®
-INC meter.
The
Index signal
is a multiple periodical pulse signal within the measurement range and explicit to the
phase of the quadrature signal, e.g. the zero signal of an incremental encoder that appears at every single
turn.
The
Reference signal
is a pulse signal unique within the measurement range to enable the reset of the
prodis
®
-INC meter, e.g. mechanical -reference contact for end position recognition.
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