Banner EZ-SCREEN­ Safety Light Curtain Systems - Manual (Page 70)

A person who, by possession of a recognized degree or certificate of professional training, or who, by extensive knowl-
edge, training and experience, has successfully demonstrated the ability to solve problems relating to the subject matter
and work.
Run Signal:
The input signal monitored by the Controller that, when detected, causes one or more Safety Outputs to turn ON, if their
other associated input signals are also in the Run state. In this manual, either the input device or the device signal is
said to be in the Run state.
Safety-rated device:
A device that is designed to an applicable safety standard and when properly applied, reduces the level of risk.
SELV:
Separated or safety extra-low voltage power supply, for circuits without earth ground. Per IEC 61140: “A SELV system
is an electrical system in which the voltage cannot exceed ELV (25 V ac rms or 60 V ripple free dc) under normal
conditions, and under single-fault conditions, including earth faults in other circuits.”
Simultaneous:
The setting that permits a signal disparity between channels within the input device for a limited time, without going into
a fault condition. If a signal disparity exists for more than 3 seconds, then a fault condition occurs.
Single-channel:
Having only one signal line for a safety input or Safety Output.
Start up test:
For certain safety devices, like safety light screens or safety gates, it can be an advantage to test the device on power
up at least one time for proper function. If ‘Start up Test’ has been selected for a safety light screen and the light screen
is clear at power up, it would be necessary to cycle the light screen one time (from ON to OFF and back to ON), even if
the Controller has been configured for auto power up.
Stop Signal:
The input signal monitored by the Controller that, when detected, causes one or more Safety Outputs to turn OFF. In
this manual, either the input device or device signal is said to be in the Stop state.
System Reset:
The term used to describe a manual system reset operation required for one or more Safety Outputs to turn ON after
Controller power-up, when configured for manual power-up, and lockout (fault detection) situations.
UL:
Underwriter’s Laboratory
EZ-SCREEN® Type 2 Light Screen Instruction Manual
70 www.bannerengineering.com - tel: 763-544-3164 122452 rev. B