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 Diverse Redundancy Design
Concept
TRIAD safety light curtains
utilize the diverse redundancy design concept. This gives the
safety light system a higher level of redundancy and control
reliability. The two microprocessors are of different design,
and the microprocessor or parallel programs are run and made
up from different instruction sets written by different programmers.
Self-Checking
Circuitry
TRIAD safety light curtains
self-check every 20 milliseconds. Self-checking is the ability
to electronically verify that all of the systems critical internal
circuit components and their redundant counterparts or back-ups
are operating properly.
Redundant
Captive Contact Safety Relays
Redundant relays assure
safety if an output relay should fail. SuperLight VI utilizes
safety relays which have force-guided contacts. The contacts
are mechanically locked together so that if one set of contacts
weld, the other contacts cannot change state. If one should fail,
code 5-6 will be displayed on the diagnostic display.
Extra Safe
Design
Provides two methods
of fail-safe design. One utilizes two microprocessors and two
captive contact relays, and one uses four watchdog timers monitoring
the system and the captive contact relays.
External Diagnostic
Display
Standard on all TRIAD
safety lights is the "Quickview Diagnostic Display."
Alpha-numeric display shows status and fault codes of the unit.
This is an excellent safety and maintenance feature.
Control Reliable
System
Critical components of
the SuperLight VI are duplicated so that a single component failure
will not cause an unsafe condition. If a component does fail,
the units self-checking circuitry recognizes the situation and
initiates a safe stop of the machine.
Powerful Infrared
Light Source
TRIAD safety lights utilize
powerful, safe, and predictable infrared light as its sensing
source. This gives the system greater reliability and enhances
machine utilization by minimizing nuisance trips and shutdowms
caused by dirt, coolants, lubrication mists and machine oils.
TRIAD safety lights are highly immune to EMI, RFI, and ambient
light conditions and are unaffected by strobe lights and weld
flash generated light sources.
Extensive
Testing
TRIAD safety lights incorporate
extensive testing and burn-in to establish a high degree of product
reliability and safety. |
