IFM LK81 Series, Operating Instructions Manual

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12.3 Error indications
Possible cause Recommended measures
[Err] Fault in the electronics ► Replace the unit.
[SEnS]
• Interfering sources (e.g. EMC)
• Faulty wiring
• Problems with the supply
voltage
► Check electrical connection.
► Check the connection between the
sensor and the tank ground.
[FAIL]
Error during adjustment of the
overflow prevention OP:
• overflow prevention covered by
the medium during adjustment
• overflow prevention soiled
• minimum distances too short
• mounting element detected
below the overflow prevention
• measured value not constant
► Lower the level, if possible.
► Clean the probe.
► Observe the notes on installation.
► Correct the position of the overflow
prevention OP.
► Repeat the adjustment.
► Deactivate OP (→ 5.2.2) .
[SCx] +
LEDs 5...8
Flashing:
short circuit in switching output x
► Remove the short circuit.
[SC] +
LEDs 5...8
Flashing:
short circuit in all switching
outputs
► Remove the short circuit.
[PArA] Faulty data set ► Reset to factory settings [rES].
12.4 Output response in different operating states
Table 11-1
OUT1...4
Initialisation phase OFF
Overflow prevention OP not adjusted OFF
Overflow prevention OP adjusted or deactivated,
normal operation
according to the level and
setting [ou1]...[ou4]
Fault
OFF for [FOUx] = [OFF]
ON for [FOUx] = [On]
13 Technical data
Technical data and scale drawing at www.ifm.com.