Also
requires
concurrent
use
of
both
hands,
but
an
anti-repeat
feature
is
required.
machine.
Make
sure
you
adjust
it
properly,
otherwise
the
device
may
be
ineffective.
Operation
is
stopped
when
the
sensing
field
(photoelectric,
radio
frequency
or
electromagnetic)
is
disturbed.
These
devices
must
be
carefully
maintained
and
adjusted,
and
they
do
not
protect
the
operator
in
the
event
of
a
mechanical
failure.
Source:
Ontario
Ministry
of
Labour
both
hands
prevents
the
operator
from
entering
the
danger
area.
One
limitation
is
only
the
operator
is
protected.
TWO-HAND
TRIP
2
4
5
1
SENSING
DEVICES
THIRD
EDITION
OF
CSA
Z432
—
SAFEGUARDING
OF
MACHINERY
-
NOW
AVAILABLE
When
industrial
machines
are
used
in
the
workplace,
the
moving
machine
parts
have
the
potential
to
cause
severe
injuries.
The
third
edition
of
CSA
Z432
covers
changing
technology,
design,
manufacturing,
maintenance
and
more.
Training
based
on
the
new
edition
–
in
convenient
onsite
format
-
is
also
available.
