Interlock Sequence Error Indication - Omron F3SG-SRB Series User Manual

SEQ indicator
Blinking: Four times
Blinking: Five times
Blinking: Six times
Blinking: Seven times
* Factory default setting

8-1-3-4. Interlock Sequence Error Indication

The following table is applied only when the pre-reset function is being enabled.
SEQ indicator
Blinking: Once
Blinking: Twice
Blinking: Three times
The F3SG-SR may have been blocked within 0.08 s after muting input A and B were
normally turned ON.
• Check that if the muting sensor and the F3SG-SR are installed too close each other.
• Check that if the speed of the workpiece is too fast.
Muting may have been released after the F3SG-SR entered the MUTING state but before a
workpiece blocked the F3SG-SR.
• Check that the workpiece still remains.
• Check that the speed of the workpiece is too slow.
The F3SG-SR entered the MUTING state, but muting may have then been released while a
workpiece passes through the F3SG-SR.
• Check that the workpiece still remains.
• Check that if the speed of the workpiece is too slow.
• Check that the muting sensors have been installed upstream and downstream of the
F3SG-SR with the size of workpieces taken into account. (Using four muting sensors)
Muting may have been released with muting input A and B remained ON after a workpiece
passed through the F3SG-SR.
• Check that the workpiece still remains.
• Check that the speed of the workpiece is too slow.
The next muting sequence may have started after muting was released but before the initial
muting condition was established.
• Check that if a next workpiece has not entered before the current workpiece passes
through the F3SG-SR.
• Check that if the interval between workpieces are too narrow.
The reset or pre-reset switch may have been pressed before the F3SG-SR receives light.
Check the wiring of the reset and pre-reset signals.
The F3SG-SR may have been blocked or the pre-reset switch may have been pressed
before the pre-reset switch is pressed.
Check the status of the F3SG-SR and the wiring of the pre-reset signal.
After the pre-reset switch was pressed, the pre-reset or reset switch may have been pressed
before the F3SG-SR is blocked.
Check the installation environment of the F3SG-SR.
After the pre-reset switch was pressed and the F3SG-SR was blocked, the pre-reset switch
may have been pressed before the reset switch is pressed.
Check the wiring of the pre-reset signal.
After the pre-reset switch was pressed, a time period from the block of the F3SG-SR to the
press of the reset switch may have exceeded the allowable time.
Check the installation environment of the F3SG-SR as well as pre-reset and reset switches.
The number of blocks of the F3SG-SR may have exceeded the allowable value after the pre-
reset switch was pressed and before the reset switch is pressed.
Check the installation environment of the F3SG-SR.
Cause and measures
Cause and measures
Appendix
E
F3SG-SR
351
User's Manual