Banner EZ-SCREEN­ Safety Light Curtain Systems - Manual (Page 8)

page 8
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
System Introduction
EZ-SCREEN Grid
Instruction Manual
1.3 Control Reliability
In addition to physical location requirements, safety standards require a safety
system such as the EZ-SCREEN Grid to fulfill some internal requirements. For
example, for an optical safety system to be used in a Safety Category 4
application (per ISO 13849-1/EN954-1), it must be third-party certified to the
type 4 requirements of IEC 61496-1 and -2.
EZ-SCREEN Grid’s microprocessor-based circuitry features a “diverse-redundant”
design, in which two microprocessors of different design, running from different
instruction sets, constantly check all system components, including each other.
In addition, EZ-SCREEN Grid is extensively FMEA (Failure Mode and Effects
Analysis) tested to establish an extremely high probability that no system
component will ever (even if it does fail) cause a failure to danger.
1.4 EZ-SCREEN Grid Operating Features
The Banner EZ-SCREEN Grid System features several selectable functions: trip or
latch output, external device monitoring (EDM), and scan code setting. These
settings are configured within the sensors, behind the threaded access port on
the front of each sensor and in the sensor wiring configuration; see Section 4.1
for more information.
Selectable Trip/Latch Output
The setting for latch or trip output also determines whether the System will enter
Run mode automatically or require a manual reset (see Section 4.1). If the
system is set for trip output, other measures must be taken to prevent a pass-
through hazard; see Section 3.3.2 for more information.
BE AM S
1
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SC AN
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BEAMS
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EZ-SCREEN Grid
BANNER ENGINEERING CORP., USA
888.373.6767
STATUS
SCAN
CODE
2
1
1 1
ON
2 3 4
SC AN CO DE
2
1
T
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1
2
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1
E D M E D M
2
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A
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BE AM S
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2
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EZ -SC RE EN Gri d
BA NN ER EN GI NE ER ING CO RP ., US A
888 .37 3.6 767
E
D
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2 T 1 T 1
1 L 2 L 2
SCAN
CODE
BEAMS
1
2
R
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S
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EZ-SCREEN Grid
BANNER ENGINEERING CORP., USA
888.373.6767
Receiver Emitter
ST ATUS
EZ -S CRE
EN G rid
BA NN ER E NG IN EE RIN G CO RP ., US A
88 8.3 73 .67 67
Scan Code
Select Switch
Scan Code
Select Switch
Beam Status Indicators
(One for Each Beam) –
Bi-color Red/Green
Trip/Latch and EDM
Select DIP Switches
7-Segment
Diagnostic Display
7-Segment
Diagnostic Display
Reset Indicator –
Yellow
Status Indicator –
Bi-color Red/Green
Status Indicator –
Bi-color Red/Green
Wiring Chamber
End Cap
Configuration
Access Port
Figure 1-5. EZ-SCREEN features