10 Glossary
The following terms are used in this manual. Where possible,
definitions
are from the U.S. and
international
product performance
standards that govern the design of the Banner device. For more
definitions,
A
ANSI (American
National
Standards
Institute)
Acronym for the American
National
Standards
Institute,
an
association
of
industry
representatives
that develops technical standards (including
safety standards). These standards comprise a consensus from a variety
of industries on good
practice
and design. ANSI standards relevant to
application
of safety products include the ANSI B11 Series, and ANSI/RIA
R15.06. See
on page 53.
Automatic
Reset
The safety input device control
operation
setting
where the assigned
safety output will
automatically
turn on when all of its associated input
devices are in the Run state. No manual reset
operation
is required for
the safety output to turn on when controlled only by safety input devices
configured
for
Automatic
Reset. When
Automatic
Reset is selected, the
input device may be said to be
configured
to run in Trip mode.
C
CE
Abbreviation
for "Conformité Européenne" (French
translation
of
"European Conformity"). The CE mark on a product or machine
establishes its compliance with all relevant European Union (EU)
Directives
and the associated safety standards.
Change of State (COS)
The change of an input signal when it switches from Run-to-Stop or Stop-
to-Run state. Dual-channel input signals, have two possible
configurable
COS
settings
describe the signal disparity limits that can exist between
channels before a fault
condition
is registered: simultaneous and
concurrent. If simultaneity is a requirement or a concern for the
application,
the user has to ensure that he made the right
selection
during
configuration.
Closed-Open Debounce Time
The
time
it takes to bridge a
jittery
input signal or bouncing of the input
contacts to prevent nuisance tripping of the Controller. Adjustable from 6
ms to 100 ms. The default value is 6 ms (50 ms for mute sensors). A
longer closed-open debounce
time
will also
affect
and increase the
response
time
of the system and/or the machine response
time.
Code
Validation
The
configuration
code
file
inspection
process
automatically
performed
by the Controller to verify that the
configuration
code has not been
corrupted or altered in any way.
Commissioning
The process of
operationally
checking a Safety Controller
installation
on a
working machine, in order to verify that the control system is working
properly.
Complementary Contacts
Two sets of contacts which are always in opposite states.
Concurrent
The
setting
that permits an
indefinite
signal disparity between channels,
without going into a fault
condition.
A fault
condition
is created if the
Stop signal changes back to a Run signal before its allied signal changes
to the Stop state. Both signals must change from the STOP state to the
RUN state before the dual-channel device is considered to be in the RUN
state.
Configurable
Describes a control device that has
pre-defined
and pre-tested
operational
parameters that can be selected or enabled, in order to
accommodate a variety of control
application
requirements.
Configuration
A selected set of
pre-defined
and pre-tested input and output device
properties
and logic
relationships
that
define
the
operating
algorithm
that the Safety Controller uses to control hazardous machine
motion.
Confirmation
The two-step process where a new or
modified
configuration
is sent to a
Controller for code
validation,
and a copy of the validated code is sent
back from the Controller to the PCI for manual parameter (I/O and
System
settings)
verification.
D
Defined
Area
The "screen of light" generated by a safety light screen system,
defined
by the height and the safety distance (minimum distance) of the
emitter
and receiver. When the
defined
area is interrupted by an opaque object
of a
specified
cross
section,
a Trip or Latch
condition
results.
Designated Person
A person or persons
identified
and designated in
writing,
by the
employer, as being appropriately trained and
qualified
to perform a
specified
checkout procedure.
Diverse-Redundancy
The
practice
of using components, circuitry or
operation
of
different
designs, architectures or
functions
to achieve redundancy and to reduce
the possibility of common mode failures.
Dual-Channel
Having redundant signal lines for each safety input or safety output.
EZ-SCREEN
®
Type 2 Light Screen
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