Introduction; Features; System Description - Banner EZ-SCREEN Instruction Manual

2 Introduction

2.1 Features

2.2 System Description

NOTE: This manual refers to an emitter and its receiver, and their cabling, or a cascade of emitters and their
receivers and their cabling as "a System".
Banner EZ-SCREEN LP emitters and receivers provide a redundant, microprocessor-controlled, opposed-mode
optoelectronic "curtain of light", or "safety light screen". EZ-SCREEN LP typically is used for point-of-operation
safeguarding, and is suited to safeguard a variety of machinery.
The EZ-SCREEN LP emitters have a row of synchronized modulated infrared (invisible) light-emitting diodes (LEDs) in a
compact metal housing. Receivers have a corresponding row of synchronized photodetectors. The light screen created by
the emitter and receiver is called the defined area; its width and height are determined by the length of the sensor pair
and the distance between them. The low-profile housing provides maximum sensing within minimum space; its defined
area (sensing area) is equivalent to the height of the housing. The maximum sensing range is 4 m (13 ft), which decreases
if corner mirrors are used. The sensing area extends from end to end of the housing; there is no "dead zone." Specialty
brackets allow easy mounting of cascaded sensors, without any loss of resolution between sensor pairs.
In typical operation, if any part of an operator's body (or any opaque object) of more than a pre-determined cross section
is detected, the solid-state Output Signal Switching Device (OSSD) safety outputs turn OFF. These safety outputs are
connected to the guarded machine's Final Switching Devices (FSDs) that control the machine primary control elements
(MPCEs), which immediately stop the motion of the guarded machine.
Electrical connections (power, ground, inputs, and outputs) are made via M12 (Euro-style) quick-disconnects or unique RD
(removable disconnect) cordsets, depending on model.
All models require a supply voltage of +24 V dc ±15%.
Both the emitter and the receiver feature 7-segment diagnostic displays and individual LEDs to provide continuous
indication of operating status, configuration, and error conditions.
EZ-SCREEN LP is extensively FMEA (Failure Mode and Effects Analysis) tested to establish an extremely high degree of
confidence that, when appropriately installed, no system component will (even if it should fail) cause a failure to danger.
• A two-piece optoelectronic safeguarding device
• Creates a screen of synchronized, modulated infrared sensing beams that
extend from end-to-end of the housing (no "dead" zone)
• Low-profile compact package for smaller production machines
• 14 mm or 25 mm resolutions
• Defined areas of 270 mm (10.6 in) or 550 mm (21.6 in)
• 100 mm to 4 m (4 in to 13 ft) sensing range
• Zone and Status indicators plus digital display to indicate number of
beams blocked, detailed diagnostics
• FMEA tested to ensure control reliability
• Highly immune to EMI, RFI, ambient light, weld flash, and strobe light
• Vibration-tolerant, factory burned-in emitter and receiver circuitry for
toughness and dependability
• Safety PLC input compatible (per OSSD specifications)
www.bannerengineering.com - Tel: 763.544.3164
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EZ-SCREEN LP Limited Function Safety Light Screen
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