Pinnacle Systems SLT Series - Manual (Page 20)

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SLT Series
Diagnostics and Troubleshooting
that mechanically the beams should be
hitting the center of the mirror , the
beams may hit the next mirror slightly
off center due to inaccuracies between
the optical and mechanical centers.
Once the mirrors and pylons are placed
in mechanical alignment, start adjusting
the mirror closest to the Emitter Pylon.
This will af fect the location that the
beams strike the next mirror, and so on.
Nearby obstructions may fall into the
field of view if the mirrors are not
correctly adjusted.
Other Light Curtains
. The infrared
beams that leave the Emitter Pylon
spread out like a flashlight and
sometimes may end up hitting the
Receiver Pylon of another pair of light
curtains. This can sometimes throw off
both sets of light curtains and keep one
or both sets RED.
To determine if this is happening, turn
off all light curtains and try one set at a
time. You may have to place a blinder
to keep one unit from seeing another.
Reflections
. Highly reflective material
near the light curtain can cause the
infrared light to bounce around and
keep the unit RED. To determine if this
is happening, temporarily cover up any
reflective material (i.e., polished metal)
and re-align the pylons and the unit
should go GREEN. You have to paint
the offending object to clear up the
problem.
Dia Dia Dia Dia Diagnostic Displa gnostic Displa gnostic Displa gnostic Displa gnostic Display Codes y Codes y Codes y Codes y Codes
.1. Blinking ....
If the decimal points on the display are
blinking, this indicates that the
computers have not received a single
beam from the Emitter Pylon. This
means that either the Emitter Pylon is
not on, you are blocking the sync (top)
channel, a bad Emitter Pylon, or an
alignment problem.
0 ..................... Clear
Definition:
No obstructions found.
Status:
GREEN, output relays energized.
Reason:
Nothing wrong.
1 ..................... 1 Beam Broken/Alignment Problems
Definition:
The light guard was triggered when at
least one beam was detected broken.
Status:
RED, fail safe relays off.
Reason(s):
1) Obstruction of one or more beams
during normal light curtain
operations. Floating Blank option:
set to 2cm mode.
2) If no obstruction is observed, then
light curtain is misaligned.
3) Emitter Pylon is not transmitting.
4) Sync Channel not firing.
Cure(s):
1) Remove all obstructions.
2) Place Floating Blank option in 2cm
mode.
3) Place Auto Blank option in OFF/
RESET position.
4) If the Sync LED is of f and the
display still reads 1, then try and
realign the light curt ain’s position
until you get a GREEN condition.
5) If the Sync LED is on, then try
aligning the pylons to get the Sync
LED to go out. Placing the pylons
close together will prove if the units
will ever go GREEN.
Important:
The Ground Terminal must be
connected to a good ground connection, not
conduit. A bad ground may keep the light curtain
from going GREEN in an electrically noisy
environment.
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