PNOZ s3
Operating Manual PNOZ s3
21395-EN-10
9
Status indicators
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.
Error indicators
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.
Fault
Diagnostics: Internal error, unit defective
} Remedy: Switch supply voltage off and then on again, change unit if neces-
sary.
Power
Diagnostics: Supply voltage too low
} Remedy: Check the supply voltage.
In1, In2 alternately
Fault
Diagnostics: Short detected between S12 and S22
} Remedy: Rectify short across contacts, switch supply voltage off and then
on again.
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