Omron G9SP Series

54
Safety Device Function Blocks Section 3-5
The condition for a synchronization error are give for each muting mode in the
following table.
Sequence Error A sequence error will occur and Sequence Error will turn ON if the muting sig-
nals (i.e., muting sensors) are not detected in the correct order.
If the AOPD inputs turns OFF (i.e., if the Safety Light Curtain is obstructed)
while there is a sequence error, the Output Enable signal will turn OFF. The
Fault Present signal will turn ON at the following times.
• When AOPD input turns OFF.
The following table lists the normal sequence for each muting mode.
Note All muting signals must turn OFF before the normal sequence. (Se-
quence error detection starts after all of the muting signals turn
OFF.)
Discrepancy Error The discrepancy time is monitored each time the AOPD Input and Override
Input are input. For information on the monitoring method. AOPD Input out-
puts to Discrepancy Error (AOPD) and Override Input outputs to Discrepancy
Error (Override). Refer to the following table (Resetting Errors) for information
on outputs to Fault Present.
Muting Mode Condition for synchronization error
Parallel Muting with 2 Sensors The time difference between muting signal 11 and
muting signal 12 has exceeded the set value of the
synchronization time.
Sequential Muting in Forward
Direction
The time difference between muting signal 11 and
muting signal 12 has exceeded the set value of the
synchronization time.
Sequential Muting in Both Direc-
tions
Input Sequence
The time difference between muting signal 11 and
muting signal 12 has exceeded the set value of the
synchronization time.
Output Sequence
The time difference between muting signal 21 and
muting signal 22 has exceeded the set value of the
synchronization time.
Position Detection Not detected.
Muting Mode Normal sequence
Parallel Muting with 2 Sensors Muting signal 11 is detected, and then muting signal
12 is detected.
Sequential Muting in Forward
Direction
Muting signal 11 is detected, and then muting signal
12 is detected.
Sequential Muting in Both
Directions
Input Sequence
Muting signal 11 is detected, and then muting signal
12 is detected.
Output Sequence
Muting signal 22 is detected, and then muting signal
21 is detected.
Position Detection AOPD input turning OFF is detected while muting
signal 11 is ON.