Omron F3SG-SRB Series User Manual page 125

 Temporarily disable monitoring by external wiring
If Temporarily Disable Monitoring by Wiring is configured, the Floating Blanking Monitoring function
can be temporarily disabled during operation by hard wiring of the muting input A and the muting input
B of a receiver.
The Floating Blanking Monitoring function is disabled for a period of T2 by turning the muting input A
from OFF to ON and the muting input B from ON to OFF within an input time difference T1 (4s) using a
limit switch, etc. Inputs of the muting input A and the muting input B must be redundant inputs of
different kinds such as a combination of NO contact and NC contact types.
(In case of a PNP output photoelectric sensor, use one output as Light-ON and the other as Dark-ON
operation)
The user can use this function only when the F3SG-SR is used as a one segment system and the
function is enabled by the SD Manager 3. The function cannot be enabled when the F3SG-SR is in the
cascade connection.
ON
Muting input A
OFF
ON
Muting input B
OFF
Blanking Monitoring
Disabled
Function
Enabled
Disabled
Beam state
Enabled
ON
OSSD
OFF
T1: Muting input limit (fixed to 4 s)
The maximum value of an input time difference between muting input A/B.
Configured as 4 s.
T2: Monitoring Temporarily Disabled Time Limit
A time limit to disable the Floating Blanking Monitoring function. When this time
period passed, the blanking monitoring function is enabled, and lockout occurs if
the blanked beam is unblocked. The factory default setting is 10 s (configurable).
T3: Maximum allowable muting signal interruption (fixed to 0.1 s)
Maximum duration of a signal interruption allowed in Muting inputs A and B. This is
set at 0.1 s.
Case: PNP
Case: NPN
The Muting is not enabled when the Temporarily Disable Monitoring by External Wiring is enabled.
T3 (0.1 s) or less
T1 (4 s) or less
T3 (0.1 s) or less
T2 or less
Limit Switch 1
(NO)
MUTE A
MUTE B
Limit Switch 2
(NC)
Limit Switch 1
(NO)
MUTE A
MUTE B
Limit Switch 2
(NC)
System Operation and Functions
24 V
0 V
E
F3SG-SR
97
User's Manual