PNOZ XV1P
Operating Manual PNOZ XV1P
20596-EN-07
9
Function Description
The safety relay PNOZ XV1P provides a safety-oriented interruption of a safety circuit.
When the supply voltage is applied via the E-STOP pushbutton, the “PWR” LED is lit. The
unit is ready for operation when the start circuit S11-S14 is closed.
} Input circuit is closed (e.g. E-STOP pushbutton not operated):
– The LEDs "CH.1/2" and "CH.1/2[t]" are lit.
– Safety contacts 13-14, 23-24 and 37-38 are closed, the unit is active.
} Input circuit is opened (e.g. E-STOP pushbutton operated):
– Safety contacts 13-14 and 23-24 are redundantly opened.
– The LED "CH.1/2" goes out.
– Once the set delay time has elapsed, safety contact 37-38 is opened redundantly.
– The LED "CH.1/2[t]" goes out.
Before the unit can be restarted, the delay time must have elapsed and the unit must again
be ready for operation.
Set delay time:
The delay time for safety contact 37-38 can be set on the front of the unit using a screw-
driver.
Operating modes
} Single-channel operation: No redundancy in the input circuit, earth faults in the start
and input circuit are detected.
} Dual-channel operation without detection of shorts across contacts: Redundant input
circuit, detects PNOZ XV1P
– earth faults in the start and input circuit,
– short circuits in the input circuit.
} Dual-channel operation with detection of shorts across contacts: Redundant input cir-
cuit, detects PNOZ XV1P
– earth faults in the start and input circuit,
– short circuits in the input circuit,
– Shorts across contacts in the input circuit.
} Automatic start: Unit is active once the input circuit has been closed.
} Monitored start: Unit is active once the input circuit is closed and once the start circuit is
closed after the waiting period has elapsed (see Technical details [ 16]).
} Increase in the number of available contacts by connecting contact expander modules
or external contactors/relays.
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