Troubleshooting - Omron F3S-B Series Instruction Manual

F3S-B

TROUBLESHOOTING

The F3S-B runs internal self-tests after the power is turned ON and while the F3S-B is in normal opera-
tion. The external test is also available. If a failure is detected, a corresponding flicker pattern is indicated
by the red LED (OFF-state indicator) of the receiver. Each failure indication sequence, other than continu-
ous flashing, will repeat after a two-second interval. This repetition will continue until a remedy is effected.
Indication
Flashing Relay monitoring failure during
continuously ON-state
(In the case that the Relay moni-
toring function is activated, the
wrong status of the relay NC con-
tact is detected when the control
outputs are in the ON-state.)
Flashing Internal parameter failure of a
once receiver
Flashing Communication failure between
twice an emitter and receiver,
or internal failure of an emitter
Flashing Internal memory failure of a
three times receiver
Relay monitoring failure during
Flashing
four times OFF-state
(In case that Relay monitoring
function is activated, wrong status
of the relay NC contact is detected
when the control outputs are OFF-
state.)
Flashing Control output failure
five times (High level voltage is detected
although a control output is in
OFF-state.)
Flashing Internal hardware failure of a
six times receiver
Flashing Series connection system fail-
ure of receivers
seven times
0.5 sec
N times flashing
Fig. Timing Chart for flashing pattern of red LED (OFF-state indicator)
36
Cause
(When control outputs are ON-state, the relay moni-
toring input must show 0 V )
* Regarding only this failure, the interruption and
(When control outputs are OFF, the relay monitoring
input must be at a level of 17 VDC to Vs.)
2 sec
0.5 sec
Remedy
Check connection of the relay monitoring input.
Check the voltage of the relay monitoring input.
restoration of power is necessary to restore F3S-B.
Change the setting parameters by the optional soft-
ware F39-U1E, or reset the setting parameters to
factory setting status also by F39-U1E.
Replace the receiver.
Check connection of the emitter and the receiver.
Check series connection of the emitters.
Check if the emitter and the receiver have the same
type name.
Check if the type name of the slave unit emitter is
same as the indicated one on the label of the mas-
ter unit emitter
Replace the emitter.
Replace the receiver.
Check connection of relay monitoring input.
Check the voltage of the relay monitoring input.
Check connection of control outputs for a short cir-
cuit with Vs (cables, connected devices)
Replace the receiver.
Replace the receiver.
Check series connection between the receivers.
Check if the type name of the slave unit receiver is
same as the indicated one on the label of the mas-
ter unit receiver
Replace the master unit receiver and /or the slave
unit receiver.
Section 8