Diagnostics And Troubleshooting; General Troubleshooting; Diagnostic Information Via Led; Indicator - Endress+Hauser Liquiphant FTL31 IO-Link Operating Instructions Manual

Liquiphant FTL31 IO-Link
12

Diagnostics and troubleshooting

Troubleshooting: If an electronic/sensor defect is present, the device changes to error
mode and displays the diagnostic event F270. The status of the process data is rendered
invalid. The switch output(s) is/are opened.
12.1

General troubleshooting

Device not responding
Supply voltage does not match the value indicated on the nameplate.
‣
Connect the correct voltage.
Supply voltage has incorrect polarity.
‣
Correct the polarity.
Connecting cables are not in contact with the terminals.
‣
Check for electrical contact between cables and correct.
No communication
Communication cable not connected.
‣
Check wiring and cables.
Communication cable incorrectly attached to device.
‣
Check wiring and cables.
Communication cable incorrectly attached to the IO-Link master.
‣
Check wiring and cables.
No transmission of process data
An error has occurred in the device, e.g. internal sensor error or electronics error.
‣
Correct all errors that are displayed as a diagnostic event .
12.2 Diagnostic information via LED indicator
LED indicator on housing cover
Green LED not lit
No supply voltage.
‣
Check plug, cable and supply voltage.
LED flashing red
Overload or short-circuit in load circuit.
‣
Rectify 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.
Ambient temperature outside of specification.
‣
Operate measuring device in specified temperature range.
Test magnet held against marking for too long.
‣
Repeat function test.
Endress+Hauser
Diagnostics and troubleshooting
33