Outermost-Beam Monitoring Mode; Lockout Mode - Omron F3SN Function Description

Safety Light Curtain Safety Light Curtain
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1.5.3. Outermost-beam monitoring mode

When only either outermost beam is interrupted, the auxiliary output goes to the ON-state.
An object intruding into the detection zone or leaving out of the zone along beam array can be
detected.
Response time OFF
ON
Note 1.: When the fixed blanking function is used, the outermost-beam monitoring mode is
not available.
Timing chart of the outermost-beam monitoring mode
ON
Power supply
Light/Dark
OSSD outputs
Auxiliary output
State 1: All beams; Light
State 3: No. 1 and 2 beam; Dark, The others; Light
t : ON OFF response time of OSSD outputs
OFF

1.5.4. Lockout mode

When the F3SN enters lockout condition, the auxiliary output goes to the ON-state.
Response time OFF
Timing chart of the Lockout mode
ON
Power supply
Condition
OSSD outputs
Auxiliary outputs
No. ST2-015031A
F F F F 3 3 3 3 S S S S N N N N
F F F F 3 3 3 3 S S S S N N N N
s s s s e e e e r r r r i i i i e e e e s s s s
s s s s e e e e r r r r i i i i e e e e s s s s
ON : (ON OFF response time of OSSD outputs) x 2
OFF : (ON OFF response time of OSSD outputs) x 2
State 1
ON
ON
t x 2 or less
OFF
State 2: No. 1 beam; Dark, The others; Light
ON : Max. 100ms after the F3SN detects a fault.
Normal
ON
ON
100 ms or less
-13-
State 2 State 1
t x 2 or less
OFF
Lockout
Removing the cause of fault
State 3
Normal