Banner EZ-SCREEN­ Safety Light Curtain Systems - Manual (Page 51)

page 51
Periodic Checkout Procedures
EZ-SCREEN Grid
Instruction Manual
6. Periodic Checkout Procedures
Study each procedure from beginning to end before you start to make sure that
you understand each step. Refer all questions to the Banner Applications
Engineering Department at the address or numbers listed on the front cover of
this manual. Checkouts must be performed as detailed in Section 6.1 below and
results should be recorded and kept in the appropriate place (e.g., near the
machine, and/or in a technical file).
6.1 Schedule of Checkouts
Initial Checkout: The procedure for initial checkout of the EZ-SCREEN Grid
System is described in Section 3.6. This procedure is performed at installation,
and at any time the System, the guarded machine, or any part of the application
is installed or altered. The procedure must be performed by a Qualified Person.
Commissioning Checkout: Should be performed at installation or whenever
changes are made to the system (either a new configuration of the EZ-SCREEN
System or changes to the machine). The procedure must be performed by a
Qualified Person.
Daily Checkout: The procedure for “daily” checkout of the EZ-SCREEN Grid
System is to be performed at each shift change or machine setup change,
whenever the System is powered up, at least daily. The procedure may be
performed by a Designated Person or a Qualified Person.
Semi-Annual Checkout: The procedure for initial checkout of the EZ-SCREEN
Grid System is to be performed at every six months, following installation of the
System. The procedure must be performed by a Qualified Person.
6.2 Trip Test
Once all Beam Status indicators are steady Green, trip test the Light Grid System
to verify proper system operation and to detect possible reflection problems,
using the test piece included with the System. With power ON:
1) Verify that the EZ-SCREEN Grid System is in Run mode;
receiver status indicators should be as follows:
Status indicator Green
All Beam Status indicators Green
Reset indicator
ON
Diagnostic Display “–” (Trip Output mode) or
“L” (Latch Output mode)
2) Pass the test piece downward through each beam at three
points: near the receiver, near the emitter, and midway between
them. In each case, verify that the appropriate Beam Status
indicator on the receiver turns steady Red and remains steady
Red while the test piece is blocking the beam. Also, verify that
the Status indicator is steady Red while any or all beams are
blocked. If the emitter and receiver are far apart, a second
person may be needed to monitor the indicators while the test
piece is used near the emitter or in the midway position.
NOTE: If beam 1 is blocked, all other Beam Status indicators will be
OFF, because beam 1 provides the synchronization signal for all
the beams.
Emitter Receiver
Figure 6-1. EZ-SCREEN Grid trip test
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164