Pilz PNOZ s50 - Conditions for Fast and Slow Shutdown

Functiondescription
OperatingManualPNOZs50
1002194EN02
18
4.2.3 Conditionsforfastandslowshutdown
Toshutdownthepowercircuits,thefollowingconditionsmustbemet:
Shutdown Y10/Y11 S35 O1+/O1
Fast 1/0pulseedge 1 >0
Slow 1 1/0pulseedge >0
Shutdown Y20/Y21 S36 O2+/O2
Fast 1/0pulseedge 1 >0
Slow 1 1/0pulseedge >0
Y10/Y11
Y20/Y21
t
S35
S36
t
O1+/O1-
O2+/O2-
t
Fast Slow
t
1
t
2
Fast
Slow
t
3
t
4
Fig.:Conditionsforfastandslowshutdown
NOTICE
Pleasenotethatafastshutdownhaspriorityoveraslowshutdown.Onlya
fastshutdownissafetyrelated.
Legend:
}
Fast:Fastshutdown
}
Slow:Slowshutdown
}
t
1
:andt
3
Switchon:Y10,Y11,S35=1,O1+/O1switcheson;Y20,Y21,S36=1,O2+/
O2switcheson
}
t
2
:Fastshutdownvia1/0pulseedgefromY10/Y11orY20/Y21
}
t
4
:Slowshutdownvia1/0pulseedgefromS35orS36
NOTICE
Pleasenotethatifthereisafaultonthenegativepole(O1,O2)ofthe
powercircuit,theloadonlyshutsdowninsinglepolemode.Theloadwill
onlyexecuteaslowshutdown.Thereactiontimeoftheoverallapplication
maybeextendedaccordingly.