Banner EZ-SCREEN SLS, Instruction Manual

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May 22, 2023
EZ-SCREEN SLS Safety Light Curtain Instruction Manual
108
D
Defined Area
The "screen of light" generated by a safety light curtain system, defined by the height and the safety distance (minimum
distance) of the system.
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.
E
Emitter
The light-emitting component of a safety light curtain system, consisting of a row of synchronized modulated LEDs. The
emitter, together with the receiver (placed opposite), creates a "screen of light" called the defined area.
External Device Monitoring (EDM)
A means by which a safety device (such as a safety light curtain) actively monitors the state (or status) of external de-
vices that may be controlled by the safety device. A lockout of the safety device will result if an unsafe state is detected in
the external device. External device(s) may include, but are not limited to: MPCEs, captive contact relays/contactors, and
safety modules.
F
Failure to Danger
A failure which delays or prevents a machine safety system from arresting dangerous machine motion, thereby increas-
ing risk to personnel.
Final Switching Device (FSD)
The component of the machine’s safety-related control system that interrupts the circuit to the machine primary control
element (MPCE) when the output signal switching device (OSSD) goes to the OFF-state.
Fixed Blanking
A programming feature that allows a safety light curtain system to ignore objects (such as brackets or fixtures) which will
always be present at a specific location within the defined area. The presence of these objects will not cause the
system’s safety outputs (for example, Final Switching Devices) to trip or latch. If any fixed objects are moved within or re-
moved from the defined area, a Lockout condition results.
Floating Blanking
See Reduced Resolution .
FMEA (Failure Mode and Effects Analysis)
A testing procedure by which potential failure modes in a system are analyzed to determine their results or effects on the
system. Component failure modes that produce either no effect or a Lockout condition are permitted; failures which
cause an unsafe condition (a failure to danger) are not. Banner safety products are extensively FMEA tested.
G
Guarded Machine
The machine whose point of operation is guarded by the safety system.
H
Hard (Fixed) Guard
Screens, bars, or other mechanical barriers affixed to the frame of the machine intended to prevent entry by personnel in-
to the hazardous area(s) of a machine, while allowing the point of operation to be viewed. The maximum size of the
openings is determined by the applicable standard, such as Table O-10 of OSHA 29CFR1910.217, also called a "fixed
barrier guard."
Harm
Physical injury or damage to the health of people, which may result through direct interaction with the machine or through
indirect means, as a result of damage to property or to the environment.
Hazard Point
The closest reachable point of the hazardous area.
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