WIKA P-31 - Manual (Page 22)

22 WIKA operating instructions precision pressure transmitter model P-3x
11473500.04 10/2011 GB/D/F/E
GB
Faults Causes Measures
Constant output signal
upon change in pressure
Mechanical overload caused by
overpressure
Replace instrument; if it fails repeatedly,
contact the manufacturer
No communication Adjustment of node ID
Transmission rate incorrect
Check the configuration parameters
No cyclic transmission PDO mapping
Transmission type incorrect
Check the configuration parameters
Signal span too small/drops Mechanical overload caused by
overpressure
Diaphragm damaged, e.g. due to
impacts, abrasive/aggressive medium;
corrosion at diaphragm/process
connection; transmission medium
missing
Sealing/sealing face damaged/soiled,
sealing does not have a tight fit,
threads jammed
Replace instrument; if it fails repeatedly,
contact the manufacturer
Contact manufacturer and replace
instrument
Clean the sealing/sealing face, replace
sealing if applicable
Signal span varies/inaccurate EMC interference sources in the envi-
ronment; e.g. frequency converter
Operating temperatures too high/low
Instrument not earthed
Strongly varying pressure of the
process medium
Shield instrument; cable shield; remove
source of interference
Observe the permissible temperatures
Earth the instrument
Damping; consulting by the manufacturer
Deviating zero point signal Operating temperature too high/low
Other mounting position
Overpressure limit exceeded
Permissible temperatures
Correct the zero point via potentiometer
or key pad or software
Observe the permissible overpressure
limit
If complaint is unjustified, we will charge you the complaint processing fees.
8. Faults