PNOZ X9P
Operating Manual PNOZ X9P
1003362-EN-12
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Function Description
The safety relay PNOZ X9P provides a safety-oriented interruption of a safety circuit. When
supply voltage is supplied the "POWER" LED is lit. The unit is ready for operation when the
feedback loop Y1-Y2 and the start circuit S33-S34 are closed. The "START" LED is lit.
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Input circuit is closed (e.g. E-STOP pushbutton not operated):
– The LEDs "CH.1 IN" and "CH.2 IN" are lit.
– Safety contacts 13-14, 23-24, 33-34, 43-44, 53-54, 63-64 and 73-74 are closed, the
auxiliary contacts 81-82 and 91-92 are opened. The unit is active.
– A high signal is present at the semiconductor output switch state Y32.
– The LEDs "CH.1 OUT" and "CH.2 OUT" are lit. The "START" LED goes out.
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Input circuit is opened (e.g. E-STOP pushbutton operated):
– The LEDs "CH.1 IN" and "CH.2 IN" go out.
– Safety contacts 13-14, 23-24, 33-34, 43-44, 53-54, 63-64 and 73-74 are opened re-
dundantly, the auxiliary contacts 81-82 and 91-92 are closed.
– A low signal is present at the semiconductor output switch state Y32.
– The LEDs "CH.1 OUT" and "CH.2 OUT" go out.
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A high signal is present at semi-conductor output Y35 if the supply voltage is present and
the internal fuse has not blown.
Operating modes
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Single-channel operation: No redundancy in the input circuit, earth faults in the start and
input circuit are detected.
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Dual-channel operation without detection of shorts across contacts: Redundant input cir-
cuit, detects PNOZ X9P
– earth faults in the start and input circuit,
– short circuits in the input circuit.
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Dual-channel operation with detection of shorts across contacts: Redundant input circuit,
PNOZ X9P 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.
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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
– 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.
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Increase in the number of available contacts by connecting contact expandsion modules
or external contactors/relays.
