Rockwell Automation Publication 450L-UM001D-EN-P - December 2019 123
Chapter 8
Safety Instructions
Maintenance
Regular Inspection
The following inspection actions must be done regularly. For example, the
frequency of inspection must be daily or according to the risk assessment.
1. Approach to hazardous machine parts must only be possible by passage
through the GuardShield safety light curtain protective field.
2. Operators cannot step through the sensing area while working on
dangerous machine parts.
3. The safety distance of the application is bigger than the calculated value.
4. The optic front cover is not scratched or dirty.
The inspection interval for 1
…4 are:
• Daily or whenever the machine setting is changed (electrical or
mechanical.
• Whenever a light curtain component (stick and/or plug-in) is replaced.
• According to the requirements of local regulation or an application-
specific standard.
• According to the inspection instruction and the risk assessment of the
application.
LASER LIGHT CLASS 2 HAZARD: Do not stare into beam. The 450L-E safety
light curtains are equipped with an integrated laser alignment aid (see Laser
Alignment on page 20).
ATTENTION: Never operate the 450L safety light curtain before conducting
the Regular Inspection
. Improper inspection can lead to serious, or even
deadly, injury.
Confirm that all power to the machine and safety system is disconnected during
electrical installation.
Before powering up the 450L safety light curtain system, the responsible person
reviews the checklist:
• For safety reasons, all inspection results are recorded.
• Only people who clearly understand the function of the 450L safety light
curtain and the machine, can perform the inspection.
If the installer, engineer, and operator are different people, they all must have
sufficient information available for the inspection.