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Omron F3SN, Function Description

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Omron F3SN Function Description Download Page 11

Safety Light Curtain

Safety Light Curtain

Safety Light Curtain

Safety Light Curtain

    

    

    

    

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No. ST2-015031A                    -11-                         

    

 

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vvvv

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m

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This function detects a failure of an external device such as a relay or contactor which 
controls a hazardous moving part of a machine. The welded contact or the like of the relay 
can be detected. 

[Direction for use] 

Connect the wires such that 24 VDC is applied to the EDM input of a receiver via the series 
connected NC contacts of external relays for PNP type. (For NPN type, 0 V is applied.) 
If an NC contact does not react within 300 ms (the default time) after the OSSD outputs 
change over, the F3SN enters lockout condition. 

 
 
 
 
 
 

EDM function: Setting configuration 

 

The determination time (allowed delay time) must be set longer than the response time 
and release time of the relay or contactor you will use. 

 
Note 1: When the OSSD outputs change over within the determination time after their 

previous changeover, the F3SN does not enter the lock-out condition even if the 
logic at the EDM input does not change over.   

Note 2: The logic at the EDM input is checked in min. 500 ms. after power ON. The pe-

ripheral circuit must be designed so as to meet this requirement.   

 
 
 

Power supply 
OSSD outputs 
EDM input 

 

 
 
 
 

EDM function 

Valid 

Invalid 

Determination time setting 

(100 to 600ms)   

Within deter-
mination time 

Within deter-
mination time 

The changeover of
the outputs within
the determination
time is ignored. 

Lock-out 

If the changeover
exceeds the deter-
mination time,
the F3SN enters
lock-out. 

Timing chart of EDM function (PNP type) 

First monitoring after
power ON 

500 ms or more 

ON

ON

24  V

Summary of Contents for F3SN

Page 1: ...scription S S S S S S S Sa a a a a a a af f f f f f f fe e e e e e e et t t t t t t ty y y y y y y y L L L L L L L Li i i i i i i ig g g g g g g gh h h h h h h ht t t t t t t t C C C C C C C Cu u u u u u u ur r r r r r r rt t t t t t t ta a a a a a a ai i i i i i i in n n n n n n n F3SN F3SN F3SN F3SN ...

Page 2: ... Start interlock 5 1 2 3 Restart interlock 6 1 3 Blanking function 7 1 3 1 Fixed blanking 7 1 3 2 Floating blanking 8 1 4 External device monitoring EDM 11 1 5 Auxiliary output function 12 1 5 1 Dark ON output mode 12 1 5 2 Light ON output mode 12 1 5 3 Outermost beam monitoring mode 13 1 5 4 Lockout mode 13 1 5 5 Light diagnosis mode 14 1 5 6 Specified beam mode 14 1 5 7 Blanking monitoring mode ...

Page 3: ...al l l l l l l l t t t t t t t te e e e e e e es s s s s s s st t t t t t t t f f f f f f f fu u u u u u u un n n n n n n nc c c c c c c ct t t t t t t ti i i i i i i io o o o o o o on n n n n n n n This function stops light emission of an emitter It is available for checking if the F3SN can show the correct OSSD Output Signal Switching Device outputs state and so on Directions for use Applying a ...

Page 4: ... ing corresponds to Manual reset mode the interlock function s are available For the fac tory setting both the start interlock and the restart interlock are set valid Direction for wiring Interlock selection input line Reset input line Manual reset mode 24 V PNP 0 V NPN A push button NO contact which connects with 24V PNP or 0V NPN Refer to the following diagram Auto reset mode 0 V PNP 24 V NPN 1 ...

Page 5: ...erlock function needs the wiring of Manual reset mode for the interlock selection input line and the reset input line Refer to 1 2 1 It is possible to release the interlock by applying 24 V for PNP type or 0V for NPN type to the reset input and by making the line open subsequently Application When you supply a machine with power at the start of work and you want to keep stopping it until the daily...

Page 6: ...erlock function needs the wiring of Manual reset mode for the interlock selection input line and the reset input line Refer to 1 2 1 It is possible to release the interlock by applying 24 V for PNP type or 0V for NPN type to the reset input line and by making the line open subsequently Application When you want to keep stopping a machine until you confirm its safety and get ready to re start it ev...

Page 7: ...de valid 3 The blanked beams are selected There are two methods of the selection teaching and manual Note 1 When a blanked beam gets in the light reception state the blanking function stops not only for the light reception beam but also for all beams automatically After the power is restored the fixed blanking function gets available with the previous setting Note 2 There is no limit for the numbe...

Page 8: ... modes in the floating blanking function 1 Sequential beam mode The mode ON When the number of consecutive obstructed beams exceeds the speci fied number of floating beams the OSSD outputs go to the OFF state It means that the object size in the detection zone must be large enough to obstruct the floating beams completely at the same time to make the OSSD outputs OFF Even if there exist plural sma...

Page 9: ...termost beam invalid mode is set as ON or OFF Note 1 Series connection The validity of the floating blanking depends on the setting of the 1CH sensor which is the closest to power supply Regarding the number of the floating beams the se quential beam mode and the outermost beam invalid mode the settings are applied to each channel sensor All relating to the floating blanking function are set inval...

Page 10: ...OFF Obstructed beam 1 Obstructed beam 2 b In case of 1 beam floating the sequential beam mode ON Outputs OFF when consecutive two or more beams are obstructed Outputs ON Outputs OFF Consecutive obstructed beam 1 Consecutive obstructed beams 2 Floating blanking function Setting configuration Obstructed beam Light reception beam Blanked by the fixed blanking and obstructed beam Floating blanking Val...

Page 11: ... a receiver via the series connected NC contacts of external relays for PNP type For NPN type 0 V is applied If an NC contact does not react within 300 ms the default time after the OSSD outputs change over the F3SN enters lockout condition EDM function Setting configuration The determination time allowed delay time must be set longer than the response time and release time of the relay or contact...

Page 12: ... operation modes by the F39 MC11 setting console 1 5 1 Dark ON output mode When a beam is interrupted the auxiliary output goes to the ON state This state is inverted from that of the OSSD outputs Response time OFF Æ ON ON Æ OFF response time of OSSD outputs x 2 ON Æ OFF ON Æ OFF response time of OSSD outputs x 5 Timing chart of the Dark ON output mode Power supply Light Dark OSSD outputs Auxiliar...

Page 13: ...me of OSSD outputs x 2 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 Power supply Light Dark OSSD outputs Auxiliary output State 1 All beams Light State 2 No 1 beam Dark The others Light State 3 No 1 and 2 beam Dark The others Light tOFF ON Æ OFF response time of OSSD outputs 1 5 4 Lockout mode...

Page 14: ...and receiver deterioration of an LED and so on The unstable state means that the received light is in the range from OFF threshold 20 to ON threshold 20 Timing chart of the Light diagnosis mode Power supply State OSSD outputs Auxiliary outputs tOFF ON Æ OFF response time of OSSD outputs 1 5 6 Specified beam mode When any of specified beams is interrupted the auxiliary output goes to the ON state R...

Page 15: ...5 7 Blanking monitoring mode In case that the fixed blanking function is valid the output goes to the ON state when a blanked beam becomes light reception state Response time OFF Æ ON ON Æ OFF response time of OSSD outputs x 2 ON Æ OFF ON Æ OFF response time of OSSD outputs x 2 Timing chart of the blanking monitoring mode Power supply State of blanked beam Auxiliary output tOFF ON Æ OFF response t...

Page 16: ... OSSD outputs keeps in the OFF state 5 Floating blanking When more beams are interrupted than the specified number the OSSD outputs go to the OFF state Up to three beams can be specified as floating 6 EDM External device monitoring This function detects a failure of an external device such as a relay or contactor If the feedback signal from the external device is not correct the F3SN enters lockou...

Page 17: ...e er r r r r r r ri i i i i i i ie e e e e e e es s s s s s s s No ST2 015031A 17 3 3 3 3 3 3 3 3 R R R R R R R Re e e e e e e ev v v v v v v vi i i i i i i is s s s s s s si i i i i i i io o o o o o o on n n n n n n n h h h h h h h hi i i i i i i is s s s s s s st t t t t t t to o o o o o o or r r r r r r ry y y y y y y y Sym Date Contents Pages A 29 05 01 First edition ...

Page 18: ...Just Fit Reliable and Easy OMRON Corporation 2001 All Right Reserved Specifications are subject to change without notice ...

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