Banner EZ-SCREEN LPM Series - Reduced Resolution (Floating Blanking)

Figure 20. DIP switch settings to program mute configuration options
6.3.6 Reduced Resolution (Floating Blanking)
Reduced Resolution increases the minimum diameter of an object that
the light screen can reliably detect anywhere within its defined area.
This allows objects of a certain maximum size to interrupt the defined
area without causing a Trip condition (that is, the OSSDs turn Off).
Use Reduced Resolution only when necessary. In reduced resolution
applications, the safety (minimum) distance always increases due to the
larger depth penetration factor (Dpf). In either case, see Calculating the
Safety Distance (Minimum Distance) (p. 19) to determine safety
distance.
Beams of Defined Area
Press Break Die
Workpiece
Figure 21. Reduced Resolution
With 2-beam reduced resolution enabled, any two consecutive beams (except for the sync beam), can be blocked without
causing a stop condition. Thus, multiple "holes" are created in which 14 mm systems will detect a 34 mm object and ignore
a 16 mm object. Similarly, 25 mm sensors will detect a 65 mm object and ignore a 36 mm object. See Figure 39 (p. 64) for
DIP-switch
configuration. During operation, the green Status indicator flashes when reduced resolution is enabled.
WARNING:
• Use reduced resolution and fixed blanking only when necessary
• Failure to follow these instructions could result in serious injury or death.
• Completely fill any holes created in the sensing field with the blanked object or increase the
safety (minimum) distance to account for the larger resolution.
Model Reduced Resolution Setting Maximum Size of Undetected Objects Resulting Resolution
14 mm Resolution Off (Not Applicable) 14 mm (0.55 mm)
On (2-beam) 16 mm (0.63 mm) 34 mm (1.34 mm)
25 mm Resolution Off (Not Applicable) 25 mm (0.98 mm)
On (2-beam) 36 mm (1.42 mm) 65 mm (2.56 mm)
EZ-SCREEN Low-Profile System with Integral Muting
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