Sel SEL-351A - Optoisolated Inputs

Date Code 20010307 Inputs, Outputs, Timers, and Other Control Logic 7-1
SEL-351A Instruction Manual
SECTION 7: INPUTS, OUTPUTS, TIMERS, AND OTHER
CONTROL LOGIC
7KLVVHFWLRQH[SODLQVWKHVHWWLQJVDQGRSHUDWLRQRI
2SWRLVRODWHGLQSXWV ,1±,1 
/RFDOFRQWUROVZLWFKHV ORFDOELWV/%±/% PRGHOVZLWK/&'RQO\
5HPRWHFRQWUROVZLWFKHV UHPRWHELWV5%±5% 
/DWFKFRQWUROVZLWFKHV ODWFKELWV/7±/7 
0XOWLSOHVHWWLQJJURXSV JURXSVZLWFKLQJVHWWLQJV66±66 
6(/
2*,&

FRQWUROHTXDWLRQ
YDULDEOHVWLPHUV
69697±69697 
2XWSXWFRQWDFWV 287±287DQG$/$50 
5RWDWLQJGHIDXOWGLVSOD\V GLVSOD\SRLQWV'3±'3 PRGHOVZLWK/&'RQO\
7KHDERYHLWHPVDUHDOOWKHORJLFLQSXWRXWSXWRIWKHUHOD\7KH\DUHFRPELQHGZLWKWKH
RYHUFXUUHQWYROWDJHIUHTXHQF\DQGUHFORVLQJHOHPHQWVLQ6(/
2*,& FRQWUROHTXDWLRQVHWWLQJVWR
UHDOL]HQXPHURXVSURWHFWLRQDQGFRQWUROVFKHPHV
5HOD\:RUGELWVDQG6(/
2*,&FRQWUROHTXDWLRQVHWWLQJH[DPSOHVDUHXVHGWKURXJKRXWWKLVVHFWLRQ
6HH6HFWLRQ6HWWLQJWKH5HOD\IRUPRUHLQIRUPDWLRQRQ5HOD\:RUGELWVDQG6(/
2*,&FRQWURO
HTXDWLRQVHWWLQJV6HH6HFWLRQ6HULDO3RUW&RPPXQLFDWLRQVDQG&RPPDQGVIRUPRUH
LQIRUPDWLRQRQYLHZLQJDQGPDNLQJ6(/
2*,&FRQWUROHTXDWLRQVHWWLQJVFRPPDQGV6+2/DQG
6(7/
OPTOISOLATED INPUTS
)LJXUHVKRZVWKHUHVXOWDQW5HOD\:RUGELWV,1WKURXJK,1WKDWIROORZFRUUHVSRQGLQJ
RSWRLVRODWHGLQSXWV,1WKURXJK,17KLVILJXUHVKRZVH[DPSOHVRIHQHUJL]HGDQG
GHHQHUJL]HGRSWRLVRODWHGLQSXWVDQGFRUUHVSRQGLQJ5HOD\:RUGELWVWDWHV7RDVVHUWDQLQSXW
DSSO\UDWHGFRQWUROYROWDJHWRWKHDSSURSULDWHWHUPLQDOSDLUVHH)LJXUHDQG)LJXUH