Datasensing SH4 BASE-STANDARD Product Reference Manual page 10

GENERAL INFORMATION
The device, consisting in one emitting and one receiving unit housed inside strong alu-
minum profiles, generates infrared beams that detect any opaque object positioned
within the light curtain detection field.
The emitting and the receiving units are equipped with command and control functions
(no external control unit is required).
Electrical connections are made through removable pig-tails which attaches to the light
curtain through a custom connector (the same for all models) and provides one or two
M12 standard connectors from 5 to 12pin.
The synchronization between the emitter and the receiver takes place optically by
means of both the first and the last optic: no electrical connection between the two
units is required and one (of two) sync beam can be part of a blanked area.
The microprocessors guarantee the check and the management of the beams that are
sent and received through the units: the microprocessors - through some LEDs - inform
the operator about the general conditions of the light curtain and about eventual faults.
As soon as an object, a limb or the operator's body accidentally interrupts the beams
sent by the emitter, the receiver immediately switches off the OSSD output and blocks
the machine (if correctly connected to the OSSD).
The SH4 safety light curtains are used in all automation fields where it is necessary to
control and protect the access to dangerous zones. In particular they are used in Manu-
facturing industry, especially the three main vertical markets: Automotive, Electronics,
Food & Beverage. Most common vertical applications: Robotics, Metalworking, Intra-
logistic and Material Handling (incl. Packaging and Assembling), General Manufacturing.
The unit consists of modular optical units, that are made of one or more transmitter and
receiver pairs.
Each optical unit can be composed by bars containing a lot of optical units, according to
kind of model.
Receiver part is the main controller of all function, it checks and decides about safety
action in case of failure has other generic issue.
Emitter is a one task device: it runs continuously, lighting in sequence it's IR-photo emit-
ters.
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SH4 BASE-STANDARD
NOTE: This manual contains all the information necessary for the selection
and operation of the safety devices.
However, specialized knowledge not included in this technical description
is required for the planning and implementation of a safety light curtain on
a power-driven machine.
As the required knowledge may not be completely included in this manual,
we suggest the customer to contact Datasensing Technical Service for any
necessary information relative to the functioning of the light curtains and
the safety rules that regulate the correct installation.