Diagnostics And Troubleshooting; Diagnostic Information Via Led; Indicator - Endress+Hauser Liquiphant FTL33 IO-Link Operating Instructions Manual

Liquiphant FTL33 IO-Link
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Diagnostics and troubleshooting

12.1 Troubleshooting
If an electronic/sensor defect is present, the device changes to the error mode and displays the
diagnostic event F270. Diagnostic message issued via IO-Link as well as status LEDs on device.
The status of the process data is rendered invalid. The switch output(s) is/are opened.
General errors
Problem
Device does not respond Supply voltage does not match that specified on the
No communication
12.2 Diagnostic information via LED indicator
LED indicator on housing cover
Malfunction Possible cause
Green LED
No power supply
not lit
Overload or short-circuit in load circuit
Red LED
flashing
Ambient temperature outside of
specification
Test magnet held against marking for
too long
Red LED
Internal sensor error
lit
LED indicator on M12 connector, can be ordered as an accessory
Malfunction
Green LED
not lit
Endress+Hauser
Possible cause
nameplate.
Supply voltage has incorrect polarity.
Connecting cables are not in contact with the terminals.
• Communication cable not connected.
• Communication cable incorrectly attached to device.
• Communication cable incorrectly attached to the IO-Link
master.
Possible cause
No power supply
Corrective action
Check connector, cable and power supply.
• Clear the short-circuit.
• Reduce maximum load current to below 200 mA if one
switch output is active.
• Maximum load current = 105 mA per output if both switch
outputs are active.
Operate measuring device in specified temperature range.
Repeat function test.
Replace device.
Corrective action
Check connector, cable and power supply.
Diagnostics and troubleshooting
Remedy
Apply correct voltage.
Reverse polarity of supply
voltage.
Check for electrical contact
between cables and correct.
Check wiring and cables.
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