Banner EZ-SCREEN Low-Profile Safety Light Curtain Systems - Manual (Page 33)

P/N 133487
31
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Overview
P/N 140044 rev. E 31
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
EZ-SCREEN LP
Instruction Manual Installation and Alignment
3.4 Light Screen Initial Checkout
The initial checkout procedure must be performed by a Qualified
Person (see Section 4.1). It must be performed only after
configuring the System and after connecting the emitter and
receiver per Section 3.3.
Configuring the System for Initial Checkout
Verify that the emitter and receiver both are set to the factory
defaults for initial checkout and optical alignment. (Receiver
factory defaults are for trip output, 2-channel EDM, reduced
resolution OFF, aux output, inverted display OFF, and scan
code 1. Emitter factory defaults are for reset, fault output OFF,
inverted display OFF, and Scan Code 1. See Figure 4-1.)
Initial checkout is performed on two occasions:
• To ensure proper installation when the System is first installed,
and
• To ensure proper System function whenever any maintenance
or modification is performed on the System or on the
machinery being guarded by the System. (See Section 6.1 for
a schedule of required checkouts.)
For the initial checkout, the EZ-SCREEN LP System must be
checked without power being available to the guarded machine.
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 controlling hazardous energy). These connections will be
made after the initial checkout procedure has been successfully
completed.
Verify that:
• 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, per Section 3.5.3.
3.4.1 Initial Power-Up and Optical Alignment
1. Inspect nearby areas for reflective surfaces, including
work pieces and the guarded machine. Reflective 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 Section 3.1.6.
Eliminate the reflective surfaces as possible by relocating
them, painting, masking or roughening them. Remaining
problem reflections will become apparent during step 5.
2. Verify that power is removed from the EZ-SCREEN LP
System and from the guarded machine and that the OSSD
safety outputs are not connected. Remove all obstructions
from the light screen.
Leaving power to the guarded machine OFF, make power
and earth ground connections on both the emitter and
receiver cables (see Figures 3-23 to 3-26) and then power up
the EZ-SCREEN LP System (only).
Verify that input power is present to both emitter and
receiver. At least one indicator on both emitter and receiver
should be ON and the start-up sequence should cycle.
3. Observe both the emitter and the receiver Status indicators
and the receiver Zone indicators to determine light screen
alignment status:
• An Emitter Lockout condition – the emitter Status indicator
single-flashing Red; the receiver Status indicator ON Red,
7-segment display reads “CH1”. Proceed to Section 5 for
diagnostic information.
• A Receiver Lockout condition – the emitter Status indicator
ON Green; the receiver Status indicator single-flashing Red,
Zone and Reset indicators OFF. Proceed to Section 5 for
diagnostic information.
• Normal operating mode (emitter) – the Status indicator ON
Green.
• A Latch condition (receiver), all optical beams clear – the
receiver Status indicator ON Red and the Reset indicator
double-flashing Yellow; Zone indicators ON Green. When the
receiver is configured for Latch Output, the outputs are ON
only when all beams are clear and after a manual reset (see
Section 1.4.8). If a reset routine can cause a Clear (Run)
condition, optimize the alignment as described in step 4. If
a Clear (Run) condition can not be achieved, see “Blocked
condition” below.
• A Clear (Run) condition (receiver) – the Status indicator ON
Green (or flashing Green if reduced resolution is enabled),
and the Reset indicator ON Yellow. All Zone indicators ON
Green.
• A Blocked condition (receiver) – the Status indicator ON
Red, the yellow Reset indicator ON, and one or more Zone
indicator(s) ON Red, identifying the location of the blocked
beams, and the number of blocked beams will be displayed.
Proceed to step #4.
NOTE: If beam 1 is blocked, Zone indicator 1 will be Red and
all others OFF. (Beam 1 provides the synchronization
signal.)
NOTE: If the emitter Test input is open, the receiver’s
7-segment Display will indicate the total number
of beams in the system (minus one) and all Zone
indicators will be Red (except for 14-beam systems,
where Zone 1 indicator will be Green).