Banner EZ-SCREEN­ Safety Light Curtain Systems - Manual (Page 5)

page 5
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
System Introduction
EZ-SCREEN Grid
Instruction Manual
Five sensor configurations are available, with two, three or four beams; emitters
have short-range and long-range versions. (Receivers are the same for both
long-range and short-range operation.) Beam spacing ranges from 300 mm to
584 mm (12" to 23"), depending on the model. The configuration (the overall
length and beam spacing) required for an application is determined by the
application and the safety standards being followed. Models SG..E/R2-584 and
SG..E/R3-533 are based on recommendations in ANSI/RIA R15.06 and ANSI B11
standards. Models SG..E/R4-300, SG..E/R3-400, and SG..E/R2-500 are based on
recommendations in EN 999. See pages 60 and 61 for a list of applicable safety
standards. Emitters and receivers do not need matching serial numbers to work
together; any emitter may be used with any receiver of the same length and beam
configuration. Figure 1-1 shows the sizes and beam configurations of the models
available.
The emitter/receiver beams feature a narrow effective aperture angle (EAA) for
effective long-range sensing — up to 70 meters, depending on model. The EAA
satisfies IEC 61496-2 (type 4), including requirements for extraneous reflections
and misalignment.
Cabling is accomplished in one of two ways. User-supplied cable may be hard-
wired into the emitter and receiver housings, using the removable terminals in
the end cap of each sensor, or Mini-style quick-disconnect models are available
for easier installation; see pages 57-58. See Section 2.5 for cable specifications
and Section 3.7 for wiring instructions.
Banner EZ-SCREEN Grid components may be purchased individually or in kits.
Kits include one emitter, one receiver, a keyed reset switch, and standard
mounting hardware for both sensors. When purchased separately, the emitter
and receiver each include one cable gland, mounting hardware for one sensor,
plus the accessory spanner wrench. The Key Reset switch also is available
separately, or the user may provide other means to reset the system (see
specifications in Section 2.5 for switch requirements).
The OSSD (solid-state safety outputs) are capable of performing a “handshake”
communication with the Muteable Safety Stop Interface (MSSI) or Universal
Safety Stop Interface (USSI) that are found on other Banner Engineering safety
products. The handshake protocol is satisfied by any Banner Engineering Safety
Category 4 (per ISO 13849-1/EN954-1) device with OSSD outputs or MSSI/USSI
inputs.
To ensure a Safety Category 4 (per ISO 13849-1/EN954-1) interface between the
two devices, the MSSI/USSI provides a “handshake request” that Banner
Engineering safety devices with OSSD solid-state outputs are capable of
responding to. This handshake verifies that the interface between the two devices
is capable of detecting certain unsafe failures that may occur, such as a short-
circuit to a secondary source of power or to the other channel, high input
resistance or loss of signal ground.