Block Diagram/Terminal Configuration; Function Description; Operating Modes - Pilz PNOZ X9 Operating Manual

PNOZ X9

Block diagram/terminal configuration

*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.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
– 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.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-
– 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 cir-
cuit, detects PNOZ X9
– earth faults in the start and input circuit,
– short circuits in the input circuit.
Operating Manual PNOZ X9
19526-EN-10
A1 A2 S11 S12 S21 S22 S52 S33 S34 S37
Input Input Input
Feed-
back
0 V 24 V
B1 B2 Y1 Y2 Y30 Y31 Y32 Y35
auxiliary contacts 81-82 and 91-92 are opened. The unit is active.
dundantly, the auxiliary contacts 81-82 and 91-92 are closed.
13 23 33 43 53 63 73 81 91
Start
K1
K2
K3
14 24 34 44 54 64 74 82 92
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