Panasonic SF4C Series Quick Instruction Manual page 52

Cause
Digital error indicator:
In case of SF4C-F15□,
Error indicator (yellow) blinks 6 times.
Wiring error of the output polarity setting
wire (shield)
Output polarity setting wire (shield)
comes down or short-circuits with other
I/O wires. Output polarity setting wire
(shield) connection of emitter / receiver
is incorrect.
Digital error indicator:
In case of SF4C-F15□,
Error indicator (yellow) blinks 7 times.
External device error
When using safety relay.
Relay contact is welded.
Response time of the relay is slow.
Contacting point "b" of the relay is not
wired.
When setting the external device moni-
tor function to "invalid."
Auxiliary output wire (yellow-green /
black) and external device monitor in-
put wire (yellow-green) are not wired.
Auxiliary output is not correctly oper-
ated.
Digital error indicator:
In case of SF4C-F15□,
Error indicator (yellow) blinks 8 times.
Supply voltage error
Specified voltage is not being supplied.
Digital error indicator:
In case of SF4C-F15□,
Error indicator (yellow) blinks 31 times.
Emitter error
Emitter is in lockout state.
Digital error indicator:
In case of SF4C-F15□, Error indicator
(yellow) blinks more than 10 times.
Effect from noise or failure of internal cir-
cuit
Affected by noise.
Internal circuit is broken down.
<Digital error indicator " " lights up (Except SF4C-F15□)>
Cause
Synchronization + wire (orange) or syn-
chronization - wire (orange / black) error.
Synchronization + wire (orange) or syn-
chronization - wire (orange / black) is
short-circuited or disconnected.
Emitter error.
52
Wire the output polarity setting wire (shield) correctly.
(0V: PNP output, +V: NPN output)
Wire the output polarity setting wire (shield) of the receiver correctly.
Replace the relay.
Replace the relay with proper response time.
Setting by the handy controller SFC-HC (optional) is also possible.
Wire correctly to the relay.
Connect the auxiliary output wire (yellow-green / black) and the
external device monitor input wire (yellow-green).
Set the external device monitor function to "invalid" by using the
handy controller SFC-HC (optional).
Check if the auxiliary output wire (yellow-green / black) is discon-
nected or short-circuited.
Reset to factory default (mode 0) by using the handy controller
SFC-HC (optional).
Check the wiring status, supply voltage and power supply capacity.
Check a digital error indicator (red) of emitter.
Check the noise status around this device.
When the synchronization + wire (orange) and synchronization -
wire (orange / black) is extended with a cable other than exclusive
2
cable, use a 0.2mm or more shielded twisted pair cable.
If this device still does not work, confirm number of blinks of the er-
ror indicator and call to our local office.
Connect the synchronization + wire (orange) and synchronization -
wire (orange / black) properly.
Check the operation of the emitter side.
© Panasonic Industrial Devices SUNX Co., Ltd. 2016
Remedy
Remedy