Banner EZ-SCREEN SLSP14-450Q88, Instruction Manual

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Important: Resetting a safeguard must not initiate hazardous motion. Safe work procedures require a start-up procedure to be
followed and the individual performing the reset to verify that the entire hazardous area is clear of all personnel before each
reset of the safeguard is performed. If any area cannot be observed from the reset switch location, additional supplemental
safeguarding must be used: at a minimum, visual and audible warnings of machine start-up.
Adjacent Reflective Surfaces
WARNING: Avoid Installation Near Reflective Surfaces
Avoid locating the defined area near a reflective surface; it could reflect sensing beam(s) around an object or
person within the defined area, and prevent its detection by the EZ-SCREEN Type 2. Perform the trip test, as
described in this manual, to detect such reflection(s) and the resultant optical short circuit. Failure to prevent
reflection problems will result in incomplete guarding and could result in serious injury or death.
A reflective surface located adjacent to the defined area may deflect one or more beams around an object in the defined area. In the
worst case, an optical short circuit may occur, allowing an object to pass undetected through the defined area.
This reflective surface may result from shiny surfaces or glossy paint on the machine, the workpiece, the work surface, the floor, or the
walls. Beams deflected by reflective surfaces are discovered by performing the trip test and the periodic checkout procedures. To
eliminate problem reflections:
• If possible, relocate the sensors to move the beams away from the reflective surface(s), being careful to maintain adequate
separation distance
• Otherwise, if possible, paint, mask, or roughen the shiny surface to reduce its reflectivity
• Where these are not possible (as with a shiny workpiece or machine frame), determine the worst-case resolution resulting from
the optical short circuit and use the corresponding depth penetration factor (Dpf or C) in the Safety Distance (Minimum
Distance) formula; or mount the sensors in such a way that the receiver's field of view and/or the emitter's spread of light are
restricted from the reflective surface
• Repeat the trip test (see Trip Test on page 28) to verify that these changes have eliminated the problem reflection(s). If the
workpiece is especially reflective and comes close to the defined area, perform the trip test with the workpiece in place
d
d
d
Operating Range (R)
Emitter Receiver
Do not position reflective surfaces
within the shaded area
top view
side view
For 0.2 to 3 m (8" to 10') Operating range: d = 0.26 m (10")
For Operating range > 3 m (>10'): d = 0.0875 x R (m or ft)
Figure 5. Adjacent Reflective Surfaces
Use of Corner Mirrors
EZ-SCREEN Type 2 may be used with one or more corner mirrors. Mirrors are not allowed for applications that would allow undetected
personnel access into the safeguarded area. The use of glass-surface corner mirrors reduces the maximum specified emitter/receiver
separation by approximately 8 percent per mirror, as follows:
SSM and MSM Series Glass-Surface Mirrors
Corner Mirrors Max. Emitter / Receiver Range
1 13.8 m (45 ft)
2 12.7 m (42 ft)
3 11.7 m (38 ft)
EZ-SCREEN
®
Type 2 Light Screen
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