Original instructions, Safety instructions—maintenance, Checklist – Rockwell Automation 440L GuardShield Type 4 and Remote Teach User Manual User Manual
Page 23: Daily inspection
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GuardShield™ Safety Light Curtain User Manual
21
Original instructions
Checklist
Before the initiation of the GuardShield the responsible person should
work through the following checklist.
Cable check prior to initiation:
Switch the GuardShield 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 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.
Daily Inspection
Operate the machine and check, if the hazardous movement will stop
under the following circumstances.
1.
o
The power supply is solely connected to the GuardShield.
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.
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 are to be used, make sure that
each system is properly installed, in order to avoid optical
interference.
10.
o
Two seconds after switching on, the system starts to work
properly, if the protective field is free of obstructions.
ATTENTION
Assure that all power to the machine, and safety
system is disconnected during electrical
installation.
Prior to powering up the GuardShield system,
the responsible person should review the
following Checklist.
IMPORTANT
1.
o
Approach to hazardous machine parts must only be
possible through passage through the protective field of
GuardShield.
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 the test rod is
anywhere within the protective field.
8.
o
The power supply of the GuardShield is turned off.
9.
o
If the blanking function is activated, check all sections of
the protective field with the appropriate test piece.
Never operate the GuardShield before carrying
out the following inspection. Improper
inspection can lead to serious or even deadly
injury.
ATTENTION
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.
IMPORTANT