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7. Inspect the area near the
defined
area (including work pieces and the guarded machine) for
reflective
on page 16). Remove the
reflective
surfaces if possible by
relocating
them,
painting,
masking or roughening
them. Remaining problem
reflections
will become apparent during the Trip Test.
8. Verify that power to the guarded machine is
Off.
Remove all
obstructions
from the
defined
area. Apply power to the EZ-SCREEN
Type 2 System. Latch Output models: (Manual Power-Up), both Alignment indicators will be
flashing
amber. Perform a manual
reset (open the reset switch for 1/4 second, then close it).
9. Observe the Status and Alignment indicators:
• Lockout: Status Blocked
flashing
red
• Blocked: Status Blocked On red Alignment indicators On,
Off,
or one of each Status Clear
Off
• Clear: Status Clear On green Alignment indicators both On Status Blocked
Off
• Latch:
(defined
Status Blocked On red Alignment indicators
flashing
amber area clear) Status Clear
Off
10. A Blocked
condition
indicates that one or more of the beams is misaligned or interrupted. See the Alignment procedure in
situation.
11.
After
the green and amber Status indicators are On, perform the trip test (
on page 28) on each sensing
field
to verify
proper System
operation
and to detect possible
optical
short circuits or
reflection
problems. Do not
continue
until
the EZ-
SCREEN Type 2 passes the trip test.
Important: Do not expose any individual to any hazard during the following checks.
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 may result in serious bodily injury or death.
12. Apply power to the guarded machine and verify that the machine does not start up.
13. Interrupt (block) the
defined
area with the supplied test piece and verify that it is not possible for the guarded machine to be
put into
motion
while the beam(s) is blocked.
14.
Initiate
machine
motion
of the guarded machine and, while it is moving, use the supplied test piece to block the
defined
area.
Do not
attempt
to insert the test piece into the dangerous parts of the machine. Upon blocking any beam, the dangerous parts
of the machine must come to a stop with no apparent delay.
15. Remove the test piece from the beam; verify that the machine does not
automatically
restart, and that the
initiation
devices
must be engaged to restart the machine.
16. Remove electrical power to the EZ-SCREEN Type 2. Both OSSD outputs should immediately turn
Off,
and the machine must not
be capable of
starting
until
power is re-applied to the EZ-SCREEN Type 2.
17. 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. A Banner
Applications
Engineer can recommend
a suitable instrument.
Do not
continue
operation
until
the
entire
checkout procedure is complete and all problems are corrected.
EZ-SCREEN
®
Type 2 Light Screen
42
www.bannerengineering.com - Tel: 763.544.3164