Datalogic DM3610, Reference Manual, Page: 15 / 157

INTRODUCTION
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1.4 DATALOGIC PHOTOELECTRIC SENSOR
The optional
Datalogic Photoelectric Sensor is used in two-head dimensioning system to
detect the presence of an item in the dimensioning area.
The photoelectric sensor is used in singulated systems where the packages are separated by
an open space between the trailing edge of one package and the leading edge of the next.
The photoelectric sensor enables a programmable transmit point at a defined distance from
the sensor. Without the photoelectric sensor, the DM3610 can be run in continuous trigger
mode
(see Modify Settings | Tach/Trigger/Transmit in chapter 4) .
Depending on the application, these devices may need to be configured differently. While the
photoelectric sensor and tachometer work well with belt conveyors, a special configuration is
needed for tilt-tray and cross-belt sorter applications.
Figure 9
: Photoelectric Sensors
1.5 TACHOMETER
The tachometer provides a continuous pulse to the system, which provides feedback on
conveyor speed and can be used to help track the package position along the length of the
conveyor.
Figure 10: Tachometer, Mounting Bracket, and CableDM3610 in DWS Systems