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®
EZ-SCREEN
Type 2 Light Screen
2. Eliminate the reflective surfaces as much possible by relocating, painting, masking, or roughening them. Remaining problem
reflections will become apparent during the trip test.
3. Verify that power is removed from the EZ-SCREEN Type 2 System and from the guarded machine and that the OSSD safety
outputs are not connected.
4. Remove all obstructions from the light screen.
5. Leaving power to the guarded machine Off, make power and earth ground connections on both the emitter and receiver cables
(see
Generic Emitter Wiring Diagram
6. Power up the EZ-SCREEN Type 2 System only.
7. Verify that the input power is present to both the emitter and the receiver. At least one indicator on both the emitter and the
receiver should be On and the start-up sequence should cycle.
8. Watch both the emitter and the receiver LED indicators to determine the light screen alignment status.
Power/Fault LED (Green)
Figure 12. Emitter Status Indicators
•
Lockout Condition—on the emitter, the green Power indicator is flashing or on the receiver, the red Status Blocked
indicator is flashing. See
•
Normal Operating Mode—to the emitter, the green Power indicator is ON.
•
Test Mode, input fault: On the receiver, the red Status Blocked indicator is On and the green Status Clear indicator is
On. Test input open at power-up.
•
Receiver Latch Condition, all optical beams clear—on the receiver, the red Status Blocked indicator is On and both
yellow Alignment indicators are flashing. For Latch Output receivers, the outputs are On only when all beams are clear
and after a manual reset. If a reset routine can cause a Clear (Run) condition, optimize the alignment as described in
Optical Alignment
•
Clear (Run) Condition—on the receiver, the green Status Clear indicator is On Green, and both yellow Alignment
indicators are On. To optimize alignment and maximize excess gain, slightly loosen the four sensor mounting screws
and rotate one sensor left and right, noting the positions where the red Status Blocked indicator turns On; repeat with
the other sensor (see
the end cap mounting screws, making sure to maintain the positioning as the screws are tightened. The sensor lenses
should directly face each other. Proceed to
•
A Blocked Condition—on the receiver, the red Status Blocked indicator is On, and both yellow Alignment indicators are
On or Off. To remedy, perform the
4.3.3 Optical Alignment
CAUTION: Ensure that no individuals are exposed to any hazard if the OSSD outputs turn ON when the emitter and receiver
become aligned.
26
on page 32).
Troubleshooting and Lockout Conditions
on page 26. If a Clear (Run) condition cannot be achieved, see "Blocked condition" below.
Optical Alignment
on page 26). Center each sensor between those two positions and tighten
Trip Test
Optical Alignment
www.bannerengineering.com - Tel: 763.544.3164
Alignment LEDs
(Yellow)
Status Blocked LED (Red)
Status Clear LED (Green)
Figure 13. Receiver Status Indicators
on page 38 for diagnostic information.
on page 28 once optimum optical alignment is verified.
on page 26 procedure.
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