Omron F3SG-SR Series, User Manual

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78
Chapter
2
Muting
F3SG-SR
User’s Manual
System Operation and Functions
2-13-4. Position Detection Muting Mode
2-13-4-1. Overview
The MUTING state is enabled when the muting input A turns ON from the OFF state and the 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
NO contact and NC 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-SR should be temporarily disabled while a worker puts objects at a loading station.
For the combination of NO and NC contacts, use the NO contact for the muting input A and the NC contact for the muting
input B. For the combination of PNP-output photoelectric sensors, use Dark-ON operation for the muting input A and
Light-ON operation for the muting input B.

Start conditions
If both of the following two conditions are satisfied, the MUTING state is enalbed.
1. No blocking object is found in the F3SG-SR'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
The 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 SEQ indicator on the receiver turns ON. However, when there is a muting error, the
F3SG-SR continues the normal operation with the safety function enabled.
For muting error indication, see 8-1-3-3. Muting Sequence Error Indication.
The Muting error state can be released by any of following conditions:
1. Correct initial muting 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-SR 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: Can be changed).
The MUTING state is also released when the F3SG-SR enters the LOCKOUT state.