Page 944 - Sensors and Systems - North American Catalog
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Logic Control Units
9
Logic Control Units,
Counters and Timers
9
.1
Logic Control Units,
Digital Meters
9
.2
Logic Control Units,
Rotation Speed Monitors and Standstill Controllers
9
.3
Logic Control Units,
Signal Converters
9
.4
Logic Control Units,
Sensor Output Converters
9
.5
942
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Logic Control Units
Introduction
Functional Description
Sensor signals often need to be displayed clearly on site or further
processed and used to control processes directly.
In addition to the sensors featured in the previous sections,
Pepperl+Fuchs also offers a wide range of products for signal
evaluation.
9.1
Displays and Counters
Visibility
Depending on the type, you can choose from four standard sizes
with front measurements of 48 mm x 24 mm, 48 mm x 48 mm,
96mm x 48 mm, and 32 mm x 15 mm depending on the space
available for your application.
The 96 mm x 48 mm housing design with very bright LED‑display
is ideal for situations where good readability is required for process
visualization or if the viewer is several meters away.
Type of Display
With the exception of electromechanical counters (cost-effective
numeric displays) and pure digital display units (extremely bright
LED‑display), you can choose between a high-contrast liquid
crystal display (LCD) and a light-emitting diode display (LED).
The LCD‑display is usually more cost effective and requires less
power, although it has restricted readability in low-light conditions.
Therefore, you should use a large LED display wherever good
readability is required.
Electromechanical Counters
Electromechanical counters are used in situations that call for cost-
effective counting with or without a reset function. The KCM series
is particularly well suited to this scenario.
Electronic Batch Controllers
Electronic batch controllers are used to control sequencing through
switching outputs. Electronic counters with LED displays offer
excellent readability even without the batch control function. The
KC-L Series is best suited to this purpose.
Time Measurement
The KC-L and KCT Series multifunction devices are ideal for
short- and long-term measurements as well as the measurement
of operating hours. These devices can accurately measure times
to the nearest millisecond. The measuring intervals can be started
and stopped automatically through the two inputs. For long-term
measurements, the devices can display times up to a maximum of
999,999 hours.
Measuring Speed/Frequency
Pulse intervals are measured to calculate rotational speed or
frequency. The display on the KC-L and KCT Series can easily be
scaled. The data is displayed directly in Hertz or rpm.
Multifunction Devices
The KC-L and KCT Series incorporating a time/counter/tachometer
function can be used in all situations where a device is used to
detect multiple signals and the programming needs to be quickly
customizable to the specific application. These devices are also
ideally equipped to deal with future changes in your plant while
helping you to reduce your inventory.
Displaying Analog Values
DA5 Series display units display measured analog values such
as pressure, temperature, or distance. These devices provide
excellent readability and feature a scalable numeric display of the
measured values. You can choose between a purely digital display
in 48 mm x 24 mm format and a process display in 96 mm x 48 mm
format with two relay outputs and linearization for sequential control.
Thanks to the power supply provided, you can supply the sensors
used in the application directly using these displays without using
an auxiliary power supply.
