107031-33-EN FR26 GLO 1101 Printed in France
57
Figure 5-2 Emitter and Receiver LEDs
Emitter LEDs
Receiver LEDs
test indicator
(red)
alarm indicator
(red)
scanning range
indicators
(yellow)
signal strength
indicator (yellow)
cross-talk indicator
(red)
operation indicators
(red and green)
Figure 5-3 Troubleshooting Flow Diagram (sheet 1)
On the receiver unit, the red "OFF"
operation indicator is permanently
on although no object stands in the
light curtain sensing field
On the receiver unit, is the
yellow signal strength LED
permanently off ?
Are the emitter and receiver units
properly aligned and are front
windows clean ?
NO
Make correct alignment and
clean front windows
On the emitter unit,
does the status of the 3
yellow scanning range LEDs
conform to the used
scanning range ?
NO
Change the position of the
emitter selector switch, and
make sure the emission
power conforms to the used
scanning range
On the emitter unit, is
the red test LED
permanently on ?
YES
Make the connection
between terminals 4 and 5 on
the emitter
Machine
operates?
Machine
operates?
Machine
operates?
NO
***
Go to sheet 2
NO
YES
NO
YES
YES
YES
Machine working
Machine working
Machine working
YES
YES
NO
NO
F
SYA9
1
F
SYA9
0
F
SYA9
2