20
107031-23 EN FR26 GLO 1199 Printed in France
2.5 Indicators
The FF-SYA Series emitters have five LED indicators. The receivers have four LED
indicators. These LED indicators provide important information related to light curtain
status.
Figure 2-9 Emitter Indicators
scanning range indicators
(yellow)
test indicator
(yellow)
alarm indicator
(red)
R1
R2
R3
2.5.1 Scanning range indicators (emitter)
Nominal Scanning Range
(factory setting)
yellow
R3
yellow
R2
yellow
R1
54% of the Nominal
Scanning Range
yellow
R2
yellow
R1
yellow
R3
yellow
R3
yellow
R2
yellow
R1
42% of the Nominal
Scanning Range
The emitter is equipped with a scanning range selector for the control of the infrared
emission power. The scanning range indicators are 3 yellow indicators which give an
information on the selected scanning range. The maximum emission power
corresponding to the light curtain Nominal Scanning Range is preset on delivery, and
these 3 LEDs light on permanently. If the Nominal Scanning Range NSR is decreased to
54 % or 42 %, then only 2 or 1 LEDs remain permanently on (see chapter 2.4.5 Scanning
Ranges).
2.5.2 Alarm indicator (emitter)
red
Alarm
Normal operation
red
Alarm
Emitter failure
The alarm indicator is a red LED which flashes if the emitter is detecting an emission
problem. The receiver is in an alarm state and the emitter needs to be changed for
correct operation. If this LED is off while the receiver is in an alarm state despite the
sensing field is clear, then the receiver may be suspected.
Scanning range indicators
(yellow)
Alarm indicator (red)
Test indicator (yellow)
F
SYA9
Summary of Contents for SYA14 Series
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