Omron F3SG-RA, User Manual

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65
F3SG-R
User’s Manual
Chapter
2
Mu
ting
System Operation and Functions
E
2-12-3. Position Detection Muting Mode
Muting state is enabled when muting input A turns ON from the OFF state and muting input B turns
OFF from the ON state within the muting input time limit value T1max, measured by a limit switch, etc.
Muting inputs must be heterogeneous redundant inputs such as the combination of N.O. contact and
N.C. contact types. (When using photoelectric sensors of PNP output, use one for Light-ON operation
while the other for Dark-ON.) This mode can be used for such a case that the F3SG-RA should be
temporarily disabled while a worker puts objects at a loading station.

Start conditions
If both of the following 2 conditions are satisfied, the muting state is enalbed.
1. No interrupting object is found in the F3SG-RA's detection zone, and the safety outputs are ON.
2. The duration between when the muting input A is turned ON* from the OFF state and when the
muting input B is turned OFF from the ON state* is within the range between the muting input time
limit values T1min (0.1 s) and T1max (4 s). Order of muting inputs A and B is irrelevant.
*PNP setting: Vs-3V to Vs, NPN setting: 0 to 3V
Muting state can be enabled in up to 80 ms after the condition No. 2 is satisfied.
If the condition No. 1 is satisfied but the time requirement of the condition No.2 is not, a muting error
occurs, and the Sequence error indicator on the receiver turns ON. However, when there is a muting
error, the F3SG-RA continues the normal operation with the safety function enabled.
For muting error indication, see 7-1-2-3. Muting Sequence Error Indication .
Muting error can be released by any of following conditions:
1. Correct muting initial condition continues for 0.1 s or longer. *1
2. Power cycle when the muting inputs A and B are in the OFF state.
*1 The correct initial muting condition is the state where the following two conditions are satisfied.
• Safety outputs of the F3SG-RA are turned ON.
• Muting input A is turned OFF and Muting input B is turned ON.
 End conditions
If any of the following conditions is satisfied, the muting state is released.
• Muting input A is in the OFF state for T3 or longer (0.1 s or longer).
• Muting input B is in the ON state for T3 or longer (0.1 s or longer).
• The duration of the muting state exceeds the muting time limit of T2 (60 s).
Muting state is also released when the F3SG-RA enters the Lockout state.