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• EDM is configured and wired per application requirements (1-channel or no monitoring, see

External Device

Monitoring

on page 41)

6.3.2 Initial Power-Up

1. Inspect the area near the light screen for reflective surfaces, including work pieces and the guarded machine.

Reflective surfaces may cause light beams to reflect around a person in the light screen, preventing the person from

being detected and not stopping the machine motion (see

Adjacent Reflective Surfaces

on page 24).

2. Eliminate the reflective surfaces as much as 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 LS Basic System and from the guarded machine and that the

OSSD safety outputs are not connected.

4. Remove all obstructions from the light screen.
5. With the power to the guarded machine Off, make external device monitoring (EDM), power, and earth ground

connections on both the emitter and receiver cables (see

Reference Wiring Diagrams

on page 43). The +24 V dc

(brown wire) and 0 V dc (blue wire) should be connected to a SELV-rated supply and GND (green/yellow wire) to

earth ground. If the installation does not allow direct connection to earth ground via the cordset, the earth ground

must be provided via the mounting brackets.

6. Power up the EZ-SCREEN LS Basic 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 Status indicators and the receiver Alignment indicators to determine the

light screen alignment status:

• An Emitter Lockout Condition—the emitter Status indicator is single-flashing red; the receiver Status

indicator is solid red, and the receiver's 7-segment display reads CH1.

• A Receiver Lockout Condition—the receiver Status indicator is single-flashing red, with Alignment and Run

mode indicators Off, and the receiver 7-segment display shows an Error Code.

• Normal Operating Mode (emitter)—the Status indicator is solid green.
• Clear (Run) Condition (receiver)—the Status indicator is solid green, and the Run mode indicator is solid

amber. All Alignment indicators are solid green.

• A Blocked Condition (receiver)—The Status indicator is solid red, Run mode indicator is solid amber, one or

more Alignment indicator(s) are solid red, identifying the location of the blocked beams, and the number of

blocked beams is displayed.

Note: If beam 1 is blocked, the Alignment indicator 1 will be red and all others Off. Beam 1 provides
the synchronization signal.

9. Proceed to

Optical Alignment

on page 36.

6.3.3 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.

Verify the optimal alignment, adjusting the sensor rotation with the power on:

1. Verify that the emitter and the receiver are pointed squarely at each other. Use a straight edge (for example, a level)