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www.bannerengineering.com - Tel: +1-763-544-3164
P/N 122451 Rev. A
EZ-SCREEN
®
Type 2 Light Screen
Semi-Annual Checkout
WARNING . . .
Do Not Use Machine Until System Is
Working Properly
If all of these checks cannot be verified, do not
attempt to use the EZ-SCREEN Type 2/guarded
machine until the defect or problem has been corrected
(see
Troublshooting and Maintenance
in the Instruction
Manual).
Attempts to use the guarded machine under such
conditions could result in an increased risk of harm.
!
12) Initiate machine motion of the guarded machine
and,
while it is moving, insert the supplied test piece into the
defined area. Do not attempt to insert the test piece into the
hazardous parts of the machine. Upon blocking any beam,
the hazardous parts of the machine should come to a stop
with no apparent delay. Upon removal of the test piece
from the defined area, verify that
the machine does not
automatically restart
, and that the initiation devices must be
engaged to restart the machine.
13) Remove electrical power to the EZ-SCREEN Type 2.
All
OSSD outputs should immediately turn OFF, and should not
be capable of turning ON until power is re-applied and, if
a Latch Output model, a manual reset is performed (Trip
Output models require no manual reset).
10)
After both Alignment indicators are ON Yellow and the Status
Clear indicator is ON Green,
perform the trip test
(described
on the Daily Checkout card) to verify proper System
operation and to detect possible reflection problems.
WARNING . . .
If Trip Test Indicates a Problem
If the EZ-SCREEN Type 2 does not respond properly
to the trip test, do not attempt to use the System.
If this occurs, the System cannot be relied upon to stop
dangerous machine motion when a person or object enters
the defined area.
An increased risk of harm could result.
!
WARNING . . .
Before Applying Power to the
Machine
Verify that the guarded area is clear of personnel
and unwanted materials (such as tools) before applying
power to the guarded machine.
Failure to do so could result in an increased risk of harm.
!
11) Apply power to the guarded machine and verify that the
machine does not start up.
Insert the test piece into the
defined area and verify that it is not possible for the guarded
machine to be put into motion while a beam is blocked.
14) Test the machine stopping response time,
using an
instrument designed for that purpose, to verify that it is the
same or less than the overall system response time specified
by the machine manufacturer. (Banner’s Applications
Engineering Department can recommend a suitable
instrument.)
Do not continue operation until the entire checkout procedure
is complete and all problems are corrected.
15) If any decrease in machine braking ability has occurred,
make the necessary clutch/brake repairs, readjust separation
distance (Ds) appropriately, record the new Ds calculation on
the Daily Checkout Procedure card and/or in the Instruction
Manual, and re-perform the Daily Checkout procedure.
16) Examine and test the machine primary control elements
(MPCEs) and any intermediary controls (such as interface
modules) to verify that they are functioning correctly and are
not in need of maintenance or replacement.
17)
Inspect the guarded machine to verify that no other
mechanical or structural problems could prevent the
machine from stopping
or assuming an otherwise safe
condition when signaled to do so by the EZ-SCREEN Type 2.
18)
Examine and inspect the machine controls and connections
to the EZ-SCREEN Type 2
to verify that no modifications have
been made which adversely affect the System.
Do not continue operation until the entire checkout procedure is
complete and all problems are corrected.
