Timing Diagram - Pilz PNOZ X9 Operating Manual

PNOZ X9
Dual-channel operation with detection of shorts across contacts: Redundant input cir-
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cuit, PNOZ X9 detects
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Automatic start: Unit is active once the input circuit has been closed.
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Manual start: Unit is active once the input circuit and the start circuit are closed.
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Monitored start: Unit is active once
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Increase in the number of available contacts by connecting contact expander modules
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or external contactors/relays.

Timing diagram

Out semi ON
Out semi OUT
Legend
Power: Supply voltage
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Start: Start circuit
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Input: Input circuit
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Output safe: Safety contacts
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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
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[2]: Manual start
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[3]: Monitored start
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a: Input circuit closes before start circuit
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b: Start circuit closes before input circuit
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t : Switch-on delay
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1
t : Delay-on de-energisation
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2
Operating Manual PNOZ X9
19526-EN-09
earth faults in the start and input circuit,
short circuits in the input circuit,
shorts across contacts in the input circuit.
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.
[1] [2] [3]
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