124 Rockwell Automation Publication 450L-UM001D-EN-P - December 2019
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 (Figure 80 on page 125
).
• There is no hazardous machine movement while the test rod is anywhere
within the protective field.
• Make sure that there are no reflective surfaces within the calculated
distance (see Minimum Distance from Reflective Surfaces on page 71
).
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 81
on page 136). 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 80 on page 125
. 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
[1.19in.]). 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 80 on page 125
) 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 39 on page 75
) is off as long
as the test rod is in the protective field. If both intensity indicators are
simultaneously green or blinking green during the static and dynamic testing, the
resolution to operate the application is not fulfilled.
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 39 on page 75
), then do not allow the machine to be
placed into operation.
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