Banner EZ-SCREEN LPM User manual

EZ-SCREEN
®
LPM Safety Light Screen
System Semi-Annual Checkout Procedure
Printed in USA 10/11 P/N 150219 rev. A
To Be Performed Every Six Months Following System Installation:
Perform the procedure contained on this Semi-Annual Checkout card every six months following System installation, or whenever changes are
made to the System (either a new configuration of the EZ-SCREEN LPM or changes to the machine). Semi-Annual checkouts must be performed by a
Qualified Person (as defined by OSHA and in the Safety Glossary of the manual). A copy of the checkout results should be kept on or near the machine: see
OSHA 1910.217(e)(1).
To prepare for this checkout, configure the EZ-SCREEN LPM as it will
be during machine operation.
The Qualified Person must:
1. Examine the guarded machine to verify that it is of a type and
design compatible with the EZ-SCREEN LPM. See Section 2.3
of the Instruction Manual for a list of appropriate applications and
limitations.
2. Verify that the minimum separation distance from the closest
hazard point of the guarded machine to the defined area is not less
than the calculated distance, determined in Section 3.1.1 of the
Instruction Manual and indicated here: _____________.
3. Verify that:
  •Access to any dangerous parts of the guarded machine is not
possible from any direction not protected by the EZ-SCREEN LPM,
hard guarding, or supplemental safeguarding, and
  •It is not possible for a person to stand between the safety light
screen and the dangerous parts of the machine, or
  •Supplemental safeguarding and hard guarding, as described
by the appropriate safety standards, are in place and functioning
properly in any space (between the safety light screen and
any hazard) which is large enough to allow a person to stand
undetected by the EZ-SCREEN LPM. See sections 3.1.2 and 3.1.3
of the Instruction Manual.
4. Verify that:
•The reset switch is mounted outside the guarded area, out of
reach of anyone inside the guarded area and
•The key or other means of preventing inadvertent use is in
place.
5. Examine the electrical wiring connections between the
EZ-SCREEN LPM OSSD outputs and the guarded machine’s control
elements to verify that the wiring meets the requirements stated in
Section 4.
6. Inspect the area near the defined area (including work pieces and
the guarded machine) for reflective surfaces. (Reflective surfaces
may cause System beams to reflect around a person in the light
screen, preventing the person from being detected and not stopping
the machine motion.) Remove the reflective surfaces as possible by
relocating them, painting, masking or roughening them. Remaining
problem reflections will become apparent during step 10.
7. Apply power to the EZ-SCREEN LPM. Ensure that power to the
guarded machine is OFF. Remove all obstructions from the defined
area. If the System is configured for Latch mode, the receiver Reset
indicator will be double-flashing. Perform a manual reset (close the
reset switch for 1/4 to 2 seconds, then open the switch). Verify that
the Reset indicator is ON steady.
8. Observe the receiver Diagnostic Display to verify that the System is
set to the desired operating mode (Trip Output - “–”; Latch - “L”).
Observe the status indicators on the receiver to determine System
status:
•Lockout: Status flashing Red
All others OFF
 •Blocked: Status ON Red
One or more Zone indicators ON Red
Reset ON Yellow
 •Clear: Status ON Green*
All Zone indicators ON Green
Reset ON Yellow
 •Latch: Status ON Red
(defined All Zone indicators ON Green
area clear) Reset flashing Yellow
 •Muted: Mute Device Input Indicators ON Yellow
Mute Lamp ON (if used)
The Display flashes a “-“ (Trip) or “L” (Latch)
* The Green indicator will be flashing if Reduced Resolution is
enabled.
9. If in a Clear condition, go to step 10. If in a Lockout condition,
refer to Section 6 of manual. A Blocked condition indicates that
one or more of the beams is misaligned or interrupted. To correct
this situation:
a. Check carefully for any obstruction in the beam path.
b. Check for contamination. Clean the emitter and receiver
windows as required (see Section 6.4 of the manual).
c. If the defined area is completely clear of obstructions,
realign the emitter and receiver, as described in Section 4.3.4 of
the manual.
If the System is in a Latch condition, perform a manual reset.
Ensure that the System is not in a muted condition or that bypass/
override is enabled.
10. Once the Status indicator and all Zone indicators are 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 LPM does not respond properly to the
trip test, do not attempt to use the machine. If this occurs,
the EZ-SCREEN LPM cannot be relied upon to stop dangerous
machine motion when a person or object enters the defined area.
Serious bodily injury or death could result.

Banner Engineering Corp., 9714 Tenth Ave. No., Minneapolis, MN 55441 • Phone: [phone] • www.bannerengineering.com • Email: [email protected]
EZ-SCREEN
®
LPM Safety Light Screen Semi-Annual Checkout
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.
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 dangerous parts
of the machine. Upon blocking any beam, the dangerous 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 LPM. All OSSD
outputs should turn OFF, and should not be capable of turning ON
until power is re-applied and, if in Latch Output mode, a manual reset
is performed (Trip Output mode requires no manual reset).
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 can recommend a suitable instrument)
15. If any decrease in machine braking ability has occurred, make
the necessary clutch/brake repairs, readjust separation (safety)
distance (“Ds” or “S”) appropriately, record the new distance
calculation on the appropriate Daily Checkout Procedure card and/or
in the 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 LPM.
18. Examine and inspect the machine controls and connections
to the EZ-SCREEN LPM to verify that no modifications have been
made which adversely affect the System.
19. If the Muting feature is used:
Do not expose any individual to hazard while attempting to initiate a
mute cycle.
19a Verify that the mute devices are intact and operating properly.
19b Initiate a normal mute cycle. Observe the receiver Diagnostic
Display (see step 8). Verify:
- Status indicator is Green
- MD1 and MD2 indicators are Yellow
- Display flashes a “-“ (Trip) or “L” (Latch)
19c If used, verify that the external mute indicator is ON.
19d Interrupt the safety light screen with the test piece selected in
step 10. Verify:
- Status indicator is Green
- Zone indicator(s) are Red identifying location of interruption
- Display flashes no. of blocked beams or CH1 if beam 1 is blocked
19e Clear the safety light screen (before the Mute Timer expires). Verify
that the Zone indicator(s) are all Green, the Display flashes a “-“
(Trip) or “L” (Latch) and the external mute indicator (if used) is ON.
19f Clear (or deactivate) the mute devices and verify:
- External mute indicator (if used) is OFF
- Status indicator is Green
- MD1 and MD2 indicators are OFF
- Display shows a solid “-“ (Trip) or “L” (Latch)
19g Verify that it is not possible for an individual to trigger the mute
devices (block both photoelectric beams or actuate both switches)
to initiate a mute and then pass through the defined area without
being detected and a subsequent stop command being issued to
the machine. If Muting option 7 is selected, verify that a mute cycle
cannot be initiated from the non-hazardous side of the installation.
20. If the Override or Bypass feature is used:
20a Ensure that the positioning of the OR1 and OR2 switches allows the
operator full view of the hazardous area and the area being guarded
by the safety light screen. Verify that the location is not within reach
from inside the safeguarded space.
20b With muting de-activated, interrupt the safety light screen with the
test piece. If Mute Dependent Override is used, also block one
mute device, and then verify:
- The external mute indicator, if used, is flashing
- Status indicator is Red
- MD1 or MD2 indicator (whichever is blocked) is Yellow
- Display flashes no. of blocked beams or CH1 if beam 1 is blocked
If the Bypass feature is used:
- The external mute indicator, if used, is OFF
- Status indicator is Red
- Zone indicator(s) are Red identifying location the interruption
20c Initiate an override/bypass by activating the OR1 and OR2 switches
within 3 seconds of each other.
20d While the light screen is interrupted, verify:
- External mute indicator, if used, is ON
- Status indicator is Green
- Display flashes number of blocked beams
20e Verify that the override drops out after 60 seconds or the bypass
drops out after 5 minutes. To initiate another override or bypass,
return switches to the original condition, wait 3 seconds, and then
activate both Override switches again within 3 seconds of each
other.
21. If all checks cannot be verified, shut machine down and do not use
until the problem(s) has been corrected. Refer to user’s manual,
Section 6.
Do not continue operation until the entire checkout procedure is complete
and all problems are corrected.
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 serious bodily injury or death.
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 LPM/guarded machine until the defect or problem has
been corrected (see Section 6 of the manual). Attempts to use the
guarded machine under such conditions could result in serious
bodily injury or death.