Rockwell Automation 440L GuardShield PAC Type 4 Safety Light Curtain - Manual (Page 6)

GuardShield™ PAC Safety Light Curtain Installation Instructions
4
Original instructions
This Class 1, eye safe laser is switched from a low output power
state to a high output power state (and back again) by means of
control circuitry which detects reflected laser light from a
temporary blockage of the emitted laser light. This is most
commonly accomplished by a person’s finger placed over the
laser overlay window. There is also an automatic shutdown
feature that switches the laser diode from the high power state to
the low power state, if there is no finger or other interruption
detected for a period of five minutes.
During the high output mode of operation, the laser is pulsed at a
rate of approximately 2 Hz in order to facilitate finger detection in
high ambient light conditions.
Safety Precautions
Principles for Safe Use and Symbols Used
The following instructions are preventive warnings to ensure the
safe and proper operation of the GuardShield PAC. These
instructions are an essential part of the safety precautions and
therefore have to be observed at any time.
Throughout this manual we use the labels ATTENTION and
IMPORTANT to alert you to the following:
Failure to observe may result in dangerous
operation
ATTENTION: Identifies information about practices of
circumstances that can lead to personal injury or death, property
damage, or economic loss.
ATTENTION helps you
• Identify a hazard
• Avoid a hazard
• Recognize the consequences
IMPORTANT: Identifies information that is especially important
for successful application and understanding of the product.
ATTENTION
Use of controls or adjustments or
performance of procedures other than those
specified herein, may result in hazardous
radiation exposure.
ATTENTION
ATTENTION
Potentially hazardous situation, which, if not
prevented, might lead to serious or deadly
injury.
Failure to observe may result in dangerous
operation.
Specialist Personnel
The GuardShield PAC safety light curtain must be installed,
commissioned and serviced only by a qualified person. A qualified
person is defined as a person who:
• Has undergone the appropriate technical training
and
• Who has been instructed by the responsible machine
operator in the operation of the machine and the currently
valid safety guidelines
and
• Who has read and has ongoing access to these installation
instructions
Proper Use
The GuardShield PAC safety light curtain must be used only as
defined in the “Range of Uses of the Device.” It must be used only
by qualified personnel and only on the machine where it has been
installed and initialized by qualified personnel.
If the device is used for any other purposes or modified in any
way, warranty claims against Allen-Bradley Guardmaster shall
become null and void.
General Protective Notes and
Protective Measures
ATTENTION
be maintained at all times.
Additional mechanical protective devices have to be
installed in a way that hazardous machine elements cannot
be reached without passing through the protective field.
The GuardShield has to be installed in a way that operators
can only operate within the sensing area.
Improper installation can result in serious injury.
Never connect the outputs to +24V DC. If the outputs are
connected to +24V DC, they are in ON-state and cannot stop
hazardous spots at the machine/application.
Never expose the GuardShield to flammable or explosive
gases.
Regular safety inspections are imperative (see maintenance).
Do not repair or modify the GuardShield. The GuardShield
safety light curtain is not field repairable and can only be
repaired at the factory. Removal of either of the GuardShield
endcaps will void the warranty terms of this product.
The GuardShield PAC must not be used with
machines that cannot be stopped electrically
in an emergency.
The safety distance between the GuardShield
and a dangerous machine movement has to
IMPORTANT
Safety Notes
Please observe the following items in order to
ensure the proper and safe use of the
GuardShield safety light curtain.