Banner EZ-SCREEN­ Safety Light Curtain Systems - Manual (Page 17)

page 17
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Installation and Alignment
EZ-SCREEN Grid
Instruction Manual
3.2 Security Protocol
Certain procedures for installing, maintaining and operating the EZ-SCREEN Grid
system must be performed by either Designated Persons or Qualified Persons.
A Designated Person is identified and designated in writing, by the employer, as
being appropriately trained and qualified to perform the specified checkout
procedures on the EZ-SCREEN Grid system. A machine operator so designated
may be a Designated Person. The Designated Person is empowered to:
• Perform manual resets and hold possession of the reset key, and
• Perform the Daily Checkout Procedure (see Section 6).
A Qualified Person, by possession of a recognized degree or certificate of
professional training, or by extensive knowledge, training and experience, has
successfully demonstrated the ability to solve problems relating to the installation
of the EZ-SCREEN Grid System and its integration with the guarded machine. In
addition to everything for which the Designated Person is empowered, the
Qualified Person is empowered to:
• Install the safety light grid system,
• Perform all safety light grid checkout procedures (see Section 6),
• Have access and make changes to the internal light grid configuration settings
and hold possession of the Banner spanner wrench that opens the
configuration access port plug, and
• Reset the system following a lockout condition.
Resetting the System
System resets are performed using an external Reset switch. This switch must be
located outside the guarded area, and not within reach of anyone inside the
guarded area (see Section 3.4). Its location should provide a clear view of the
entire safeguarded area. If any hazardous areas are not within view from the
switch location, additional means of safeguarding must be provided.
The switch should be protected from accidental or unintended actuation (e.g.,
through the use of rings or guards).
If supervisory control of the Reset switch is required, a key switch may be used,
with the key kept in the possession of a Designated or Qualified Person. Using a
key switch will also provide some level of personal control, since the key may be
removed from the switch. This will hinder a reset while the key is under the
control of an individual, but must not be relied upon solely to guard against
accidental or unauthorized reset. Spare keys in the possession of others or
additional personnel entering the safeguarded area unnoticed may create a
hazardous situation.
Reset Routine
The EZ-SCREEN requires a manual reset to clear a latch condition and resume
operation following a stop command. To perform a manual reset, close the
normally open Reset switch for a least 1/4 second, but not longer than 2
seconds, and then re-open the switch. Internal lockout conditions also require a
manual reset to return the system to RUN mode after the failure has been
corrected and the input correctly cycled.