Paper Pre-End (Paper Low) Sensor Option - Hengstler eXtendo X-56 Operating Manual

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eXtendo Thermal Printer Family
The eXtendo
sensor has a light source on one side of the paper and the detector on the other side
of the paper. When the light is blocked and cannot reach the detector, the printer
concludes that paper is present. When the light does reach the sensor, the printer
concludes that there is no paper present.
The through-beam sensor can also be used in a manner similar to a Black Mark
sensor. Instead of a Black Mark, a hole is used in the paper. The through-beam
sensor is located on the centerline of the paper path. This is the only location it may
use.

3.6.2. Paper Pre-End (Paper Low) Sensor Option

When ordered with the Paper Pre-End Sensor option, the eXtendo
with a paper pre-end sensor to be mounted by the customer. The sensor is a reflex
type, meaning that it senses paper by bouncing light off the paper and detecting its
reflection. The sensor is equipped with a 300 mm long cable to allow flexible
mounting by the customer, and the sensor itself is mounted on a small printed circuit
board with a hole to be used for mounting it. Simply mount the sensor where it will
detect paper low (it is often mounted facing the side of the paper roll, so that as the
diameter of the paper roll decreases, it eventually loses the reflection of the light and
changes state), and plug the PPE sensor into the upper sensor connector on the
control board. While the exact distance of the sensor from the paper varies from
application to application, it is typically 2-5 mm for optimal sensing.
If a paper roll holder and Paper Pre-End (Paper Low) Sensor were both ordered, the
PPE sensor will be mounted to the paper roll holder, and the sensor connector need
only be plugged into the eXtendo
shows the PPE sensor itself, while Figure 6 is the input circuit to the Paper Pre-End
(Paper Low) input.
The lower sensor connector is for an Auxiliary Sensor, which can be mounted as
desired by the customer. The status of this sensor will be reported when the
eXtendo
located below the Paper Pre-End (Paper Low) Sensor connector.
Figure 6 shows the input circuit for these sensor connectors. (Fig. 6 represents the
circuit for either the Paper Low or Auxiliary Sensor pair; these two inputs are wired
identically.) Please note that each sensor input has two connectors, one on each
side of the printer. The Paper Pre-End (Paper Low) Sensor connectors are
designated CN6 and CN6', while the Auxiliary Sensor connectors are CN8 and CN8'.
Only one connector of each pair (for example, CN6 and CN6') should be connected
at one time.
Part No. D 684 124
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can also use a through-beam sensor in OEM applications. This type of
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status is requested via the interface. The Auxiliary Sensor connector is
Mod. No. 4 080812 LEV
HENGSTLER
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controller board, (if necessary). Figure 5A below
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will be shipped
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