Operation; Status Indicators; Error Indicators - Pilz PNOZ s4 Operating Manual

PNOZ s4

Operation

The unit is ready for operation when the Power LED is permanently lit.
LEDs indicate the status and errors during operation:
Status indicators
Error indicators
Operating Manual PNOZ s4
21396­EN­13
LED on
LED flashes
INFORMATION
Status indicators and error indicators may occur independently. In the case
of an error display, the "Fault" LED will light or flash (exception: "Supply
voltage too low"). An LED that is also flashing indicates the potential cause
of the error. An LED that is lit and is static indicates a normal operating
status. Several status indicators and error indicators may occur simultan­
eously.
Power
Supply voltage is present.
In1
Input circuit at S12 is closed.
In2
Input circuit at S22 is closed.
Out
Safety contacts are closed and semiconductor output Y32 carries a high signal.
Reset
24 V DC is present at S34.
All LEDs off
Diagnostics: Short across contacts/earth fault; unit switched off
}
Remedy: Rectify short across contacts/earth fault, switch off supply voltage
for 1 min.
Fault
Diagnostics: Plug terminator not connected
}
Remedy: Insert plug terminator, switch supply voltage off and then on
again.
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