PNOZ X9
Operating Manual PNOZ X9
19526-EN-09
8
Block diagram/terminal configuration
A1 A2
B1 B2
S11 S12 S21 S22 S52 S33 S34 S37 23 33 43 53 63 73 81 9113
24 34 44 54 64 74 82 9214Y35Y32Y31Y30Y2Y1
Input Input Input
Start
Feed-
back
K1
K2
K3
0 V 24 V
*Insulation between the non-marked area and the relay contacts: Basic insulation (over-
voltage category III), Protective separation (overvoltage category II)
Function Description
The safety relay PNOZ X9 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.
} Input circuit is closed (e.g. E-STOP pushbutton not operated):
– The LEDs "CH.1IN" 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.
} Input circuit is opened (e.g. E-STOP pushbutton operated):
– The LEDs "CH.1IN" 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.
} 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
} 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 X9
– earth faults in the start and input circuit,
– short circuits in the input circuit.
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