Fault description Cause Remedy
Incorrect pressure indicator for
supply pressure (InC)
Sensor module contaminated Replace the sensor module and
operate the sensor only with
filtered compressed air
è 15.1 Technical data, general.
Value InC (supply pressure) out-
side the measuring range
(>2bar)
Maintain pressure range
è 15.1 Technical data, general.
Measured value indicator
(7-segment) flashes
Overpressure above permitted
overload pressure (device dam-
aged)
Replace sensor module.
Short circuit or overload at the
output
Rectify short circuit/overload.Outputs do not switch in
accordance with the settings
Sensor module defective Replace sensor module.
Settings cannot be edited (Lock) Access protection active Enter security code or reset
device to factory setting
1)
.
Long response times after the
CLEAN function with virtually
closed or completely closed
measuring nozzles
Pressure reduction for the
measuring nozzle too slow
Replace the vent screw with a
differential pressure regulator
è 10.3 Using the differential
pressure regulator.
"Sensor ready for operation"
display not showing when using
a differential pressure regulator
è 5.2.9 Graphic distance
monitoring
No pressure reduction for the
measuring nozzle
Adjust the differential pressure
regulator
è 10.3 Using the differential
pressure regulator.
1) If the security code can no longer be found.
Tab. 38
13 Disassembly
1. Switch off the energy sources (operating voltage, compressed air).
2. Disconnect the connections for the control module and the sensor modules.
3. Remove device.
Disassembly
48 Festo — SOPA — 2020-04