LINK Systems Max Presence Sensing Device - Manual (Page 2)

Link Lite Black Max Section 1 - User Requirements
1-1
1. IMPORTANT REQUIREMENTS
AND RESPONSIBILITIES THAT
THE USER/EMPLOYER MUST
MEET WHEN USING LINK LITE
BLACK MAX LIGHT CURTAINS
The Link Lite Black Max light curtain is a
presence sensing device whose most
common use is to enhance protection of
personnel from point of operation hazards
on industrial machinery. A light curtain
performs the simple function of a light
activated switch that can be used to
provide a signal as to whether something
or someone is in the sensing field between
its transmitter and receiver units. It
cannot, as a stand alone component,
provide personnel safety enhancement or
other function. Only when a light curtain
is properly applied, installed, adjusted, and
used as a component of a production
system whose other components also meet
the requirements for use of a light curtain
does it act, in conjunction with other
components of the system, to enhance
personnel safety. Because only the user
/employer has continuous knowledge and
control over all elements of production
system design and use (and attendant
hazards), both OSHA regulations and
ANSI standards assign the employer the
responsibility for providing and insuring
the use of properly applied and adjusted
point of operation safeguarding.
It is the user's/employer's responsibility to
read, understand, and enforce the
following requirements when using a Link
Lite Black Max as a safeguarding device.
Link Electric and Safety Control Co. takes
no responsibility where its light curtains
are improperly installed, adjusted, or used,
and where machines on which its light
curtains are used are not properly
maintained.
1.1. Machine and Machine Control
Construction Requirements
All light curtains depend on the electrical,
mechanical, pneumatic, and/or hydraulic
control components and drive systems of
the machine to stop hazardous motion
when the light curtain gives a stop signal
to the machine control. If machine control
components or drive systems fail to
function properly, the machine may fail to
stop, or may not stop quickly, even though
the Black Max is functioning properly.
Install Black Max light curtains for
safeguarding only on machines or
production systems that meet the
following requirements.
1. The machine construction must comply
with any applicable OSHA or ANSI
standards for such a machine.
2. The machine design and construction
must allow hazardous action to be stopped
quickly at any time or position within its
cycle.
3. The machine action must be
electrically controllable.
4. The electrical, pneumatic, and/or
hydraulic control system that governs
machine action must be designed and
constructed so that de-energization of
electrical components or loss of pressure
results in stopping the machine action.
WARNING! Do not install the Black Max
on full revolution mechanical power presses
or any other machinery that can only be
stopped at the end of a complete cycle.
Serious injury may result, because the
machine cannot immediately respond to a
stop signal.