Original instructions, Safety instructions—maintenance, Checklist – Rockwell Automation 440L GuardShield PAC Type 4 Safety Light Curtain User Manual
Page 24: Daily inspection
GuardShield™ PAC Safety Light Curtain Installation Instructions
22
Original instructions
Checklist
Before the initiation of the GuardShield PAC the responsible
person should work through the following checklist.
Cable check prior to initiation:
Switch the GuardShield PAC on and check its
function by observing the following:
Safety Instructions—Maintenance
Note:
1. For safety reasons all inspection results should be recorded.
2. Only persons, who clearly understand the functioning of the
GuardShield PAC and of the machine, may carry out an
inspection.
3. If installer, planning engineer and operator are different
people, make sure that the user has sufficient information
available to carry out the inspection.
1.
o
The power supply is solely connected to the
GuardShield PAC.
2.
o
The power supply is a 24V DC device, that must comply
to all applicable standards of the Machinery Directive
2006/42/EC, and the product standard (IEC 61496).
3.
o
Proper polarity of the power supply at the GuardShield
PAC.
4.
o
The transmitter connection cable is properly connected
to the transmitter, the receiver connection cable is
properly connected to the receiver.
5.
o
The double insulation between the light curtain output
and an external potential is ensured.
6.
o
The OSSD outputs are not connected to +24V DC.
7.
o
The connected switching elements (load) are not
connected to 24V DC.
8.
o
No connection to a conventional power supply.
9.
o
If two or more GuardShield PAC are to be used, make
sure that each system is properly installed, in order to
avoid optical interference.
10.
o
2 seconds after switching on, the system starts to work
properly, if the protective field is free of obstructions.
IMPORTANT
Prior to powering up the GuardShield PAC
system, the responsible person should review
the following Checklist.
ATTENTION
Never operate the GuardShield PAC before
carrying out the following inspection.
Improper inspection can lead to serious or
even deadly injury.
Daily Inspection
Operate the machine and check, if the hazardous movement will
stop under the following circumstances.
1.
o
Approach to hazardous machine parts must only be
possible through the protective field of GuardShield
PAC.
2.
o
Operators cannot step through the sensing area while
working on dangerous machine parts.
3.
o
The safety distance of the application is bigger than the
calculated value.
4.
o
The optic front cover is neither scratched nor dirty.
5.
o
The protective field is interrupted.
6.
o
Hazardous machine movement stops immediately, if
the protective field is interrupted by the test rod
directly in front of the transmitter, directly in front of
the receiver and in the middle between transmitter and
receiver.
7.
o
No hazardous machine movement while completely
interrupting any of the PAC beams.
8.
o
The power supply of the GuardShield PAC is turned off.
IMPORTANT
If any of the above conditions do not result in
the hazardous motion of the machine
ceasing, do not allow the protected machine
to be placed in operation.