Rockwell Automation 440L GuardShield PAC Type 4 Safety Light Curtain User Manual
Page 3
 
GuardShield™ PAC Safety Light Curtain Installation Instructions
1
Original instructions
Conditions required for proper use of the
GuardShield PAC Safety Light Curtain
Please make sure you read and understand these requirements before you select and install the 
GuardShield PAC safety light curtain. GuardShield PAC safety light curtains are perimeter access 
safeguarding devices. These safety light curtains are intended to be used to provide perimeter access 
safeguarding of personnel around a variety of machinery.
The GuardShield PAC family of safety light curtains are general purpose presence sensing devices 
which are designed to protect personnel working on or near machinery.
The installation of the GuardShield PAC safety light curtains must comply with all applicable federal, 
state, and local rules, regulations, and codes.
It is the responsibility of the employer to properly install, operate and maintain the product as well as 
the machinery on which the GuardShield PAC presence sensing device is installed.
GuardShield PAC safety light curtains must be properly installed by qualified personnel.
GuardShield PAC safety light curtains are presence sensing devices and will not protect personnel 
from heat, chemicals, or flying parts. They are intended to signal a stop of hazardous machine motion 
when the sensing field is broken.
GuardShield PAC safety light curtains can only be used on or around machinery which can be 
stopped anywhere in its stroke or cycle.
GuardShield PAC safety light curtains should never be used for guarding full revolution clutched 
machinery.
The effectiveness of the GuardShield PAC safety light curtains depend upon the integrity of the 
machine control circuit. The machinery that the GuardShield PAC presence sensing device is installed 
on should have control circuitry that is fail safe in design.
All stopping mechanisms for the machinery should be inspected regularly to ensure proper 
operation. The protected machinery must have a consistent reliable and repeatable stopping time.
ATTENTION
Failure to read and follow these instructions can lead to misapplication or misuse of the 
GuardShield safety light curtains, resulting in injury and damage to equipment.