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):
}
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Input circuit is opened (e.g. E-STOP pushbutton operated):
}
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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

Single-channel operation: No redundancy in the input circuit, earth faults in the start
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and input circuit are detected.
Dual-channel operation without detection of shorts across contacts: Redundant input
}
circuit, detects PNOZ X9
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Operating Manual PNOZ X9
19526-EN-09
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
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.
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.
earth faults in the start and input circuit,
short circuits in the input circuit.
13 23 33 43 53 63 73 81 91
Start
K1
K2
K3
14 24 34 44 54 64 74 82 92
8