Muting Error Indication - Omron Sti F3SJ-E N25 Series User Manual

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Muting Error Indication

The cause of muting errors can be identified by display patterns of the internal indicator.
Internal indicator
Muting error indicator
Blinking: Once
Blinking: Twice
Blinking: Three times
Blinking: Four times
Blinking: Five times
Blinking: Six times
Blinking: Seven times
Power supply may have been turned ON with muting input 1 or 2 being ON.
Check the condition of the muting sensors and light curtains.
Muting input 2 may have been turned ON before muting input 1 was turned ON.
Check the condition of the muting sensors.
Muting input 1 and 2 may have been turned ON at the same time.
• Check the arrangement of the muting sensors.
• Check if the wiring of muting input 1 and 2 is short-circuited.
Ether muting input 1 or 2 may have been turned ON with the light curtain being blocked.
Check the condition of the light curtains.
Muting input 2 may have been turned ON within T1min (= 0.1 sec) after muting input 1 was
turned ON.
• Check that if the muting sensors are installed too close each other.
• Check that if the speed of the workpiece is too fast.
It may have taken T1max (= 3 sec) or longer for muting input 2 to be turned ON after muting
input 1 was turned ON.
• Check that if the muting sensors are installed too far each other.
• Check that if the speed of the workpiece is too slow.
The light curtain may have been blocked after muting input 1 was turned ON but before
muting input 2 was turned ON.
Check the condition of the light curtains.
The light curtain may have been blocked within 0.15 sec after muting input 1 and 2 were
normally turned ON.
• Check that if the muting sensor and light curtain are installed too close each other.
• Check that if the speed of the workpiece is too fast.
Muting may have been released after the light curtain entered the muting state but before a
workpiece blocked the light curtain.
• Check that the workpiece still remains.
• Check that the speed of the workpiece is too slow.
The light curtain entered the muting state, but muting may have then been released while a
workpiece passes through the light curtain.
• 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 light
curtain with the size of workpieces taken into account. (Using four muting sensors)
Muting may have been released with muting input 1 and 2 remained ON after a workpiece
passed through the light curtain.
• 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 light curtain.
• Check that if the interval between workpieces are too narrow.
Cause and measures
Appendix
E
F3SJ-E/B
117
User's Manual