Timing Diagram - Pilz PNOZ X9 Operating Manual

PNOZ X9
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Dual-channel operation with detection of shorts across contacts: Redundant input circuit,
PNOZ X9 detects
– earth faults in the start and input circuit,
– short circuits in the input circuit,
– shorts across contacts in the input circuit.
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Automatic start: Unit is active once the input circuit has been closed.
}
Manual start: Unit is active once the input circuit and the start circuit are closed.
}
Monitored start: Unit is active once
– the input circuit is closed and then the start circuit is closed and opened again.
– the start circuit is closed and then opened again once the input circuit is closed.
}
Increase in the number of available contacts by connecting contact expandsion modules
or external contactors/relays.

Timing diagram

Out semi ON
Out semi OUT
Legend
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Power: Supply voltage
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Start: Start circuit
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Input: Input circuit
} Output safe: Safety contacts
}
Output aux: Auxiliary contacts
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Out semi ON: Semiconductor output supply voltage
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Out semi OUT: Semiconductor output switch state
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[1]: Automatic start
} [2]: Manual start
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[3]: Monitored start
} a: Input circuit closes before start circuit
}
b: Start circuit closes before input circuit
}
t : Switch-on delay
1
}
t : Delay-on de-energisation
2
Operating Manual PNOZ X9
19526-EN-10
[1] [2] [3]
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