Omron F3SJ-A series User Manual page 132

Appendix
Emitter Receiver
C
B
A
C
B
A
C
B
A
F3SJ-A
114
User's Manual
Error code Error Description
3A Excessive number
of beams
C
B
3B Excessive number
of connected
A
sensors
3C Model error
(between series
connection)
3D Model error
(between emitter/
receiver)
3E Sensor count
error (no emitter)
3F Sensor count
error (no receiver)
4E Cap position error Failure of F3SJ's internal circuit.
C
4F Cap error
B
A
50, 51, 52, 53 External device
C
monitoring error
B
A
Cause
Total number of beams of F3SJs
under series connection exceeds
240.
Four or more sensors are
connected.
Models of the primary sensor and
secondary sensor are unavailable
for connection. (Primary: PNP
Output, Secondary: NPN Output,
etc.)
Models are different between an
emitter and a receiver (lengths,
output types, or beam gaps are
different)
Number of emitters under series
connection is less than that of
receivers (emitters: 2, receivers:
3, etc.)
Number of receivers under series
connection is less than that of
receivers (emitters: 3, receivers:
2, etc.)
Cap is not attached.
Relay is welded.
The relay and external device
monitoring input line are not
properly wired.
The relay response time exceeds
the allowable delay time.
If short-circuit is made to an
auxiliary output instead of a relay,
the auxiliary output line is broken
or short-circuited.
Emitter(s) and receiver(s) are
reversely connected when
connected to connector type
controller.
(Connectors of F3SP-B1P's
emitter/receiver are reversely
attached, etc.)
Solution
Rearrange series connection so
that total number of beams of
series connection should not
exceed 240.
Number of F3SJs under series
connection must be 3 or less.
Connect them properly.
p.52
Replace the F3SJ.
Attach the cap properly.
Replace the relay.
Check the wiring for the relay.
Replace the relay with one that
has an appropriate response time.
Make sure there is no failure in
the external device monitoring
input and auxiliary output lines.
Check connectors' positions.