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5.3 Trouble-shooting Procedures
When the FF-SYA Series safety light curtains are working properly and the sensing field is not interrupted, at least one of the
emitter yellow LEDs R1, R2 and R3 is illuminated, the receiver green LED «ON» is illuminated, and all other LEDs are NOT
illuminated. If this condition is not met, refer to the following trouble-shooting chart, flow diagram and corresponding repair
procedures.
Trouble-shooting Chart (see Figure 5-2 for indicator information)
Symptom
•
All light emitting diode (LED)
indicators are NOT illuminated
•
The emitter red « test »
indicator and the receiver red
« OFF » operation indicator are
both illuminated
•
The emitter red « alarm »
indicator is flickering and the
receiver red « OFF » operation
indicator is illuminated
•
The receiver red cross-talk
indicator is « ON » and the
receiver red « OFF » operation
indicator is illuminated
•
The receiver yellow signal
strength indicator is flickering
and the green « ON » operation
indicator is illuminated
•
The receiver yellow signal
strength indicator is flickering
and the red « OFF » operation
indicator is illuminated
•
The receiver yellow signal
strength indicator and the red
« OFF » operation indicator are
both illuminated
•
Random alarms without
apparent cause (i.e., erratic
outputs, flickering LEDs)
50
Probable Cause
•
No power
•
The test contact is
activated
•
Emitter is having a failure
•
Receiver is receiving a
signal from a second
emitter
•
Static safety outputs of
receiver are not supplied
with power
•
Emitter and/or receiver
units need to be cleaned
•
Emitter and/or receiver
units need to be aligned
•
Emission power is too low
•
Static safety outputs of
receiver are not supplied
with power
•
Emitter and/or receiver
units need to be cleaned
•
Emitter and/or receiver
units need to be aligned
•
Emission power is too low
•
Sensing field may be
obstructed
•
Emitter and/or receiver
units need to be cleaned
•
Emitter and/or receiver
units need to be aligned
•
Emission power is too low
•
Receiver unit internal
error
•
Line voltage transients
greater than IEC 801-4
Norm standard
•
Unacceptable ambient
light interference
Corrective Action
•
Ensure external fuse is not blown.
•
Ensure supply voltage and polarity are correct (see
2.6 Specifications).
•
Ensure electrical power connections are secure and
correct. (see chapter 4 Electrical Connections)
•
Check the connection between terminals 4 and 5 on
the emitter corresponds to settings of the test
contact type (see chapter 4.6 Test Input).
•
Replace the emitter unit by a new one of the same
resolution and protection height
•
Adjust the emission power of the second emitter
(see chapter 3 Installation).
•
Connect terminal 3 of receiver to 24 Vdc
•
Clean emitter lens, receiver lens and mirrors (see
chapter 5.4 Cleaning).
•
Align emitter, receiver and mirrors
•
Adjust the emission power of the emitter (see
Chapter 3 Installation and 3.6 Mutual Interference
or cross-talk)
•
Connect terminal 3 of receiver to 24 Vdc
•
Clean emitter lens, receiver lens and mirrors (see
chapter 5.4 Cleaning).
•
Align emitter, receiver and mirrors
•
Adjust the emission power of the emitter (see
chapter 3 Installation)
•
Remove obstacles interrupting sensing field.
•
Clean emitter lens, receiver lens and mirrors (see
chapter 5.4 Cleaning).
•
Align emitter, receiver and mirrors
•
Adjust the emission power of the emitter (see
chapter 3 Installation and 3.6 Mutual Interference
or cross-talk)
•
Replace receiver unit by a new one of the same
resolution and protection height
•
Ensure the correct supply voltage is provided.
•
Ensure varistors on the inductive loads are present
•
Ensure external circuit connection to pins 4 and 5 on
the emitter connector are secure
•
Ensure ground connection on emitter and receiver
are secure
107094-10-EN FR26 GL O 103 Printed in France
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