Rockwell Automation Allen-Bradley 140M, Руководство пользователя

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110 Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
Chapter 8 Safety Instructions
Operate the machine and check if the hazardous movement stops under the
following circumstances.
• The protective field is interrupted.
• If the test rod directly in front of the transmitter or receiver, or between
the transmitter and receiver, interrupts the protective field, the
hazardous machine movement stops immediately (see
Figure 85 ).
• There is no hazardous machine movement while the test rod is anywhere
within the protective field.
• Verify that there are no reflective surfaces within the calculated distance
(see
Minimum Distance from Reflective Surfaces on page 66 ).
Before introducing the test rod, verify that the protective field is free. Both
intensity indicators are green at the stick, which acts as the receiver (see
Figure 42 on page 68 ). If the two intensity indicators are not green, adjust the
sticks until the intensity indicators are green. Move the test rod through the
protective field as indicated in
Figure 85 . Use test rod 450L-AT-14 for the light
curtain with finger resolution (14 mm [0.56 in.]) and test rod 450L-AT-30 for
the light curtain with hand resolution (30 mm [1.19 in.]). The catalog number of
the test rod is printed on a label on each rod. The protective field must always
be interrupted:
• If the test rod is placed at any angle anywhere within the protective field
(static).
• If the test rod is moved (according to Figure 85 ) with the axis of the test
rod normal to the plane of the detection zone, at any speed from 0…0.3
m/s (dynamic).
The interruption of the protective field is displayed at the indicator diodes.
Verify that the minimum of one intensity indicator (
Figure 42 on page 68 ) is
off as long as the test rod is in the protective field. If both intensity indicators
are simultaneously green or flashing green during the static and dynamic
testing, the resolution to operate the application is not fulfilled.
Figure 85 - Proper Testing of Protective Field Using Test Rod
Additionally, a more detailed inspection must be conducted:
• Whenever a machine setting is changed.
• The local regulation or an application-specific standard requires an
inspection.
ATTENTION: If any of the previous conditions do not stop the hazardous
motion of the machine or simultaneously lead to two green intensity
indicators (see
Figure 42 on page 68 ), then do not allow the machine to be
placed into operation.
IMPORTANT If one or more mirrors are used (see Mirrors on page 67 ), inspect each
protective field separately. The movement of the test rod is also
performed directly in front of the mirrors.