The Allen-Bradley GuardMaster
SC300 is a Type 3, vision-based
protective device for use in a variety
of machine guarding applications.

The latest addition to the
Rockwell Automation safety optoelectronic
product family, the
hand detection safety sensor,
is a compact Type 3, SIL 2,
IEC 62061, PLd EN ISO
13849-1 vision-based
protective device, that uses
image-processing
technology to
detect the intrusion of objects
through its detection window.

The safety-sensing function is
performed by a single image sensing
device, which views a single twodimensional
image against a passive
pattern as the background. Detection
principle is based on an object of a
certain resolution blocking the
image-sensing device’s view of the
pattern.

Targeted at light and medium
industrial machine guarding tasks,
GuardMaster SC300 can be used for
frame openings from 400 x 400mm
to 1500 x 1500mm. It is easy to
install and set up, providing a cost
effective, 20ms response, handdetection
solution that can
replace 24-30mm safety light
curtains. Its small size and
detection offset allows it to
be mounted on the inside
or outside corner of a
frame opening,
maintaining the
opening while helping
protect the SC300.

The unit is used
with reflective tape, which defines
the boundaries of the sensing field.

No software is required to program
or teach the device the style of the
opening to be guarded.