Troubleshooting Procedures - Honeywell FF-SYA14 Series Manual

5.3 Troubleshooting 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 troubleshooting chart, flow diagram and corresponding repair
procedures.
Troubleshooting 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)
56
Probable Cause
•
No power.
•
Test input is open.
•
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
Specifications).
•
Ensure electrical power connections are secure and
correct. (see chapter Electrical Connections)
•
Ensure the external circuit wiring connection between
pins 4 and 5 on the emitter connector is secure (see
chapter Electrical Connections and see chapter
Mutual Interference or cross-talk)
•
Test Contact (emitter terminals 4 and 5).
•
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 Installation)
•
Connect terminal 3 of receiver to 24 Vdc
•
Clean emitter lens, receiver lens and mirrors (see
Chapter Cleaning
•
Align emitter, receiver and mirrors
•
Adjust the emission power of the emitter (see
Chapter Installation, Mutual Interference or cross-
talk)
•
Connect terminal 3 of receiver to 24 Vdc
•
Clean emitter lens, receiver lens and mirrors (see
Cleaning).
•
Align emitter, receiver and mirrors
•
Adjust the emission power of the emitter (see chapter
Installation)
•
Remove obstacles interrupting sensing field.
•
Clean emitter lens, receiver lens and mirrors (see
Cleaning).
•
Align emitter, receiver and mirrors
•
Adjust the emission power of the emitter (see chapter
Installation, 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
107031-33-EN FR26 GLO 1101 Printed in France