Banner EZ-ARRAY Lens Shields Manuel d'utilisateur télécharger pdf (Page 3)

EZSS Series Snap-On Lens Shields

P/N 127944 rev. B 3

Banner Engineering Corp. • Minneapolis, MN U.S.A.

www.bannerengineering.com • Tel: 763.544.3164

Adjacent Reflective Surfaces

Use of the EZSS series lens shield may increase the distance “d” shown in Figure 2

below. The surface of the shield may increase the potential angle of the beams from that

shown in the figure (without the shield in place). It is important to perform the trip test

with the lens shield in place. If the trip test indicates an optical short circuit, refer to

the EZ-SCREEN Instruction Manual, Section 3.1.6 for information on eliminating problem

reflections.

Maintenance

To prevent loss of excess gain, the shields should be cleaned when they become dirty.

Remove dirt and/or oil from the front face of the shield using a mild detergent or

window cleaner and a soft cloth. Avoid industrial cleaning agents or cleaning agents

containing alcohol, as they may damage the polycarbonate shield material.

Replacement

The shield should be replaced when it becomes pitted or scratched, or excess gain will

be decreased.

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 System. Perform the trip test, as

described in Section 3.4.4 of the EZ-SCREEN

Instruction 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 bodily injury or death.

Do not position reflective surfaces

within the shaded area

Receiver with

lens shield

Emitter with

lens shield

For distance D, with lens shields:

Operating Range to 3 m (10'): d = 0.26 m (10")

Operating Range > 3 m (>10'): d = 0.0875 x R (m or ft)

Operating

Range (R)

Figure 2. Adjacent reflective surfaces

1 2 3 4

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Banner EZ-ARRAY Lens Shields Manuel d'utilisateur Page 3

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