May 22, 2023
EZ-SCREEN SLS Safety Light Curtain Instruction Manual
36
•
•
•
Verify the Test input is jumpered (if used) and the System is set to the factory defaults for initial checkout and optical align-
ment. (Factory defaults are for Trip Output, 2-Channel EDM, Reduced Resolution OFF, and Scan Code 1.)
For the initial checkout, the
EZ-SCREEN SLS
System must be checked without power being available to the guarded ma-
chine. Final interface connections to the guarded machine cannot take place until the light screen system has been checked
out. This may require lockout/tagout procedures (refer to OSHA1910.147, ANSI Z244-1, or the appropriate standard for con-
trolling hazardous energy). These connections will be made after the initial checkout procedure has been successfully com-
pleted.
Verify:
Power has been removed from (or is not available to) the guarded machine, its controls or actuators; and
The machine control circuit or the Interface Module is not connected to the OSSD outputs at this time (permanent
connections will be made later); and
EDM is configured for No Monitoring (see
Machine Primary Control Elements (MPCE) and External Device Monitor-
NOTE:
If beam 1 is blocked, Zone indicator 1 is red and all others are off. Beam 1 provides the synchro-
nization signal.
Configuring the System for Initial Checkout
5.8.1
Initial Power-Up
5.8.2
Inspect the area near the light screen for reflective surfaces, including work pieces and the guarded machine. Reflec-
tive surfaces may cause light beams to reflect around a person in the light screen, preventing the person from being
detected and not stopping the machine motion (see
1.
Eliminate the reflective surfaces as much possible by relocating, painting, masking, or roughening them. Remaining
problem reflections will become apparent during the trip test.
2.
Verify that power is removed from the
EZ-SCREEN SLS
System and from the guarded machine and that the OSSD
safety outputs are not connected.
3.
Remove all obstructions from the light screen.
4.
Leaving power to the guarded machine off, make power and earth ground connections on both the emitter and receiv-
er cables (see
"Generic Wiring Diagrams" on page 47
).
5.
Power up the
EZ-SCREEN SLS
System only.
6.
Verify that the input power is present to both the emitter and the receiver. At least one indicator on both the emitter
and the receiver should be on and the start-up sequence should cycle.
7.
◦
◦
◦
◦
◦
◦
Watch both the emitter and the receiver Status indicators and the receiver Zone indicators to determine the light
screen alignment status.
Lockout Condition
(emitter or receiver)—the Status indicator single-flashes red, and the receiver Zone and
Reset indicators are off. Proceed to
for diagnostic information.
Normal Operating Mode
(emitter)—The green Status indicator is on.
Test mode (5-pin emitters only): A flashing green System Status indicator (Test input open).
Receiver Latch Condition, all optical beams clear
—the receiver red Status indicator is on and the amber Re-
set indicator is double-flashing; green Zone indicators are on. When the receiver is configured for Latch Out-
put, the outputs are on only when all beams are clear and after a manual reset. If a reset routine can cause a
Clear (Run) condition, optimize the alignment as described in the following section. If a Clear (Run) condition
cannot be achieved, see “Blocked condition” below.
Clear (Run) Condition
(receiver)—The green Status indicator is on (or flashing green if reduced resolution is
enabled), and the amber Reset indicator is on. All green Zone indicators are on. To optimize alignment and
maximize excess gain, slightly loosen the sensor mounting screws (x4) and rotate one sensor left and right,
noting the positions where the Status indicators turn red (Blocked condition); repeat with the other sensor
"Optically Align the SLS Components" on page 37
). Center each sensor between those two positions and
tighten the end cap mounting screws, making sure to maintain the positioning as the screws are tightened.
The sensor lenses must directly face each other. Proceed to
"Perform a Trip Test" on page 40
optical alignment is verified.
A Blocked Condition
(receiver)—The red Status indicator is on, the amber Reset indicator is on, one or more
red Zone indicator(s) are on, identifying the location of the blocked beams, and the number of blocked beams
"Optically Align the SLS Components" on page 37
8.
© Banner Engineering Corp.
Summary of Contents for EZ-SCREEN SLS
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