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Section 6 Troubleshooting
B-29
Section 6 Troubleshooting
6-1 Lockout condition
When the light curtain enters the lockout condition, the error content will be displayed by a flashing pattern
of the Error mode indicator.Devise a countermeasure in accordance with the following table.
[Note]:
For some error conditions, either only the emitter or receiver will flash.
Error mode
indicator
Cause
Remedy
A B C
Wiring error for
interlock function
setting
1) The reset input line and the interlock
selection input line are not wired correctly.
2) The interlock selection input line became
open or shorted during power-on.
1)-2)
Confirms the wiring for the
auto reset mode or the
manual reset mode.
A B C
Error of the EDM
function
1) One of the external relay contacts is
welded.
2) The EDM input line is not wired correctly
to the external relays.
3) The setting value of relay monitoring time
is lower than the relay response time.
4) In the case of connecting the EDM input
line to the auxiliary output line in order to
make the EDM function inactive, lines are
open or shorted to the 0 V line.
1) Replace the relay.
2) Check connection of the
relay monitoring input line.
3) Replace with a relay of
proper release time.
4) Check the EDM input line
and the auxiliary output line
for error.
A B C
RS-485
communication
line error
1) The RS-485 communication line is open
or shorted to the other I/O line.
2) Communication error by noises.
3) Failure of the CPU.
1) Check connection of the
RS-485 lines.
2) Check noise environment
around the RS-485
communication lines.
3) Replace the light curtain
A B C
OSSD error
1) OSSD outputs are shorted together
2) At least one OSSD output is shorted to
the +24V line, 0V line, or the other I/O line.
3) Failure of OSSD output circuit
1)-2) Rewire the OSSD
outputs correctly.
3) Replace the receiver.
A B C
Error by
interference light
1) Interference light is received.
2) The emission light of the other
photoelectric sensor is received.
1)-2) Interrupt the
interference light. (Refer to
2-1-4)
A B C
Incorrect
configuration on
the light curtain
connection
The type of the receiver is different from the
type of the emitter. (e.g. the number of
beams is different.)
Correct the type of the light
curtain.
A B C
Error by noises or
Destruction of the
light curtain
1) Influenced by significant noise.
2) Internal hardware failure of the receiver
or the emitter.
1) Check noise environment
around the light curtain.
2) Replace the receiver or the
emitter.
Flashing Not lit
6-2 Other trouble
In case the light curtain does not work, even if the lockout indicator and the error mode indicator are not
flashing, devise a countermeasure in accordance with the following table.
Phenomenon
Cause
Remedy
The light intensity
level indicator does
not lit although any
beams are not
interrupted.
1) RS-485 communication lines are not
connected.
2) RS-485 communication lines are
influenced by significant noise.
3) Auxiliary output is connected to + 24V
line.
1) Reconnect the RS-485 line correctly.
2) Check noise environment around the
RS-485 lines.
3) Open the auxiliary output line, or connect
to the 0V line via a load.
Summary of Contents for F3SN-B P Series
Page 10: ...A 3 1 2 4 b b OFF 300ms 1 b 9V Vs 2 4 1 2 5 2 1 mm...
Page 14: ...A 7 2 1 2 1 1 F3SN B F3SN B...
Page 17: ...A 10 2 1 3 D 0 2 3m 0 27m 3m L 2 tan10 L 0 087 m 2 1 4 F3SN B 2 F3SN B L D D L D 10 10...
Page 18: ...A 11 0 2 3m 0 54m 3m L tan10 L 0 18 m L D D 10 10...
Page 21: ...A 14 2 3 2 3 1 F3SN B R36 mm 52mm R 3 6 R 3 6 R 3 6 80mm 80mm...
Page 23: ...A 16 1 2 3 2...
Page 30: ...A 23 1 2 F3SN B 1 3 5 OFF 1 F3SN B P70 4 9 24V OFF 5 6 1 3 3 2 3 F3SN B 4...
Page 31: ...A 24 2 2 8 1 4 1 5 6 5 6 7 3 24V 2 3 1 4 1 2 2 2 0V RS 485 B RS 485 A 7 1 24V 2 2 4 2 NO...
Page 32: ...A 25 OFF OFF OFF ON OFF 25 s 160 200 s OFF OFF ON ON OFF 130 s ON...