SOPA-...
36
Festo – SOPA-... – 2017-09b English
9
Fault clearance
Malfunction
Possible cause
Remedy
No indication on display
No supply voltage or
impermissible operating voltage
Switch on the supply voltage;
observe the voltage range.
Electrical connections swapped
(incorrect polarity)
Connect the sensor module in
accordance with the plug
pattern.
Sensor module defective
Replace sensor module.
Incomplete display
Display defective
Replace sensor module.
Incorrect pressure indicated
for supply pressure (In C)
Sensor module fouled
Replace the sensor module
and only operate the SOPA
with filtered compressed air
(
è
Chapter 11)
Measured value indicator
(7-segment) flashes
Value In C (supply pressure) outside
the measuring range (>2 bar)
Observe the pressure range
(
è
Chapter 11)
Overpressure above permitted
overload pressure
(devicedamaged)
Replace sensor module.
Outputs do not switch in
accordance with the settings
Short circuit or overload at the
output
Eliminate short
circuit/overload
Sensor module defective
Replace sensor module.
Settings cannot be edited
(Lock)
Access protection active
Entering the security code
Reset device to its factory
settings
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
Chapter 6.2)
No “ready for operation”
signal when using a
differential pressure regulator
No pressure reduction for the
measuring nozzle
Adjust the differential
pressure regulator
(
è
Chapter 6.2)
1)
If the security code can no longer be found.
Tab. 16
Fault clearance