4.4.5 Preparing for System Operation
After the initial trip test has been accomplished, and the OSSD safety outputs and EDM connections have been made to
the machine to be controlled, the EZ-SCREEN Type 2 is ready for testing in combination with the guarded machine.
The operation of the EZ-SCREEN Type 2 with the guarded machine must be verified before the combined System and
machine may be put into service. To do this, a Qualified Person must perform the Commissioning Checkout Procedure
described in
Commissioning Checkout
on page 33.
4.4.6 Commissioning 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 safety system that includes
the Banner device and the guarded machine until the defect or problem has been corrected. Attempts
to use the guarded machine under such conditions may result in serious bodily injury or
death.
Perform this checkout procedure as part of the System installation after the System has been interfaced to the guarded
machine, or whenever changes are made to the System (either a new configuration of the EZ-SCREEN Type 2 or changes
to the machine). A Qualified Person must perform the procedure. Checkout results should be recorded and kept on or near
the guarded machine as required by applicable standards.
To prepare the System for this checkout:
1. Examine the guarded machine to verify that it is of a type and design compatible with the EZ-SCREEN Type 2
System. See
Examples: Inappropriate Applications
on page 7 for a list of misapplications.
2. Verify that the EZ-SCREEN Type 2 is configured for the intended application.
3. Verify that the safety distance (minimum distance) from the closest danger point of the guarded machine to the
defined area is not less than the calculated distance, per
Calculating the Safety Distance (Minimum Distance)
on
page 11.
4. Verify that:
•
Access to any dangerous parts of the guarded machine is not possible from any direction not protected by
the EZ-SCREEN Type 2 System, hard (fixed) guarding, or supplemental safeguarding, and
•
It is not possible for a person to stand between the defined area and the dangerous parts of the machine,
or
•
Supplemental safeguarding and hard (fixed) guarding, as described by the appropriate safety standards,
are in place and functioning properly in any space (between the defined area and any hazard) which is
large enough to allow a person to stand undetected by the EZ-SCREEN Type 2.
5. Verify that all reset switches are mounted outside and in full view of the guarded area, out of reach of anyone
inside the guarded area, and that means of preventing inadvertent use is in place.
6. Examine the electrical wiring connections between the EZ-SCREEN Type 2 OSSD outputs and the guarded
machine’s control elements to verify that the wiring meets the requirements stated in
Electrical Connections to the
Guarded Machine
on page 29.
7. Inspect the area near the defined area (including work pieces and the guarded machine) for reflective surfaces (see
Adjacent Reflective Surfaces
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
Yellow. 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 Yellow 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
Optical Alignment
on page 26 to correct this situation.
11. After the Green and Yellow Status indicators are On, perform the trip test (
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.
EZ-SCREEN
®
Type 2 Light Screen
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
