IFM Electronic efector160 LI2 Bedienungsanleitung Seite 25

4 Programming
Error messages
Locking / Unlocking
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If the adjustment to the empty or full state is not possible, the red LED
flashes quickly after the adjustment attempt (about 2 Hz).
To delete this error message press the programming button once or
disconnect and then connect power again. The previous adjustment
values remain unchanged.
Remove the error cause and then make the adjustment again. Avoid
the faults the operator may have made.Possible reasons for an error
message:
• The signal difference between the empty and full state is too
small (e.g. adjustment to the empty and full state without suffi-
cient change of the level; or too low density of the medium).
• The signal change between the empty and full state is in the wrong
order (e.g. adjustment to the empty state when the vessel is full and
then adjustment to the full state when the vessel is empty).
• Fault during the empty adjustment (e.g. distance between the medi-
um and active zone is too small or empty adjustment made when
there is direct contact with an electrically conductive medium, e.g.
water).
Faults of the unit can also disturb the adjustment and result in a fault
message:
• Electronic fault or sensing zone of the unit damaged.
• Internal fault (can only be deleted by disconnecting and connecting
power again, hardware reset).
The stored adjustment values can be protected against unauthorised
programming: Press the programming button for 10 s. The green
LED first flashes slowly (about 1 Hz), after 5 s more quickly. As soon as
the indication goes out the unit is locked. Then the green LED is lit, the
unit is in the operating mode.
To unlock the unit press the programming button for 10 s. After about
10 s all LEDs go out briefly, the unit is unlocked.
Units are delivered from the factory in the unlocked state.
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