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SU2020 SU2021 SU2621 SU8020 SU8021 SU8621 SU9020 SU9021
Ultrasonic flow meter
54
Display indication
LED display
Problem/remedy
• Title line:
• Process value line:
IO-Link
• Switching status LEDs: flash yellow
rapidly
IO-Link function for optical identification
of the active unit.
u
Deactivate IO-Link function.
• Title line:
Simulation
• Process value line: ---
• Operating status LED: Lights green
Simulation active.
u
End simulation.
• Title line:
Lock via key
• Process value line: ----
Setting keys on the unit locked, parame-
ter change rejected.
u
Unlock the unit using the keys.
• Title line:
Lock via system
• Process value line: ---
Setting keys locked via parameter set-
ting software, parameter change reject-
ed.
u
Unlock the unit via IO-Link interface
using the parameter setting software.
• Title line:
Lock via
communication
• Process value line: ---
Parameter setting via keys locked, pa-
rameter setting is active via IO-Link
communication.
u
Finish parameter setting via IO-Link
communication.
In the event of a warning, the outputs react according to the setting under [FOU] = OU.
Exception: Short circuit.
12.2 Error messages
Display indication
LED display
Problem/remedy
• Title line:
Hardware error
• Process value line:
ERROR
• Operating status LED: Lights red
Unit faulty / malfunction.
u
Replace the unit.
• Title line:
Signal error
• Process value line:
NO SIGNAL
• Operating status LED: flashes red
No medium present or signal quality too
low due to interference in the pipe
length.
u
Check whether medium is present in
the sensor tube.
u
Remove unit and check for deposits.
u
Check application for interference (air
bubbles/particles).
• Title line:
Parameter error
• Process value line:
PARA
• Operating status LED: flashes red
Parameter setting outside the valid
range.
u
Check parameter setting.
• Title line:
Critical over limit
• Process value line:
cr.OL
• Operating status LED: flashes red
Above the measuring range.
u
Check the measuring range.
• Title line:
Critical under limit
• Process value line:
cr.UL
• Operating status LED: flashes red
Below the measuring range.
u
Check the measuring range.
In the event of an error, the outputs react according to the setting under [FOU].