Wika P-31 Uživatelský manuál stáhnout pdf (Strana 22)

22 WIKA operating instructions precision pressure transmitter model P-3x

11473500.04 10/2011 GB/D/F/E

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 conguration parameters

No cyclic transmission PDO mapping

Transmission type incorrect

Check the conguration 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 t,

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 unjustied, we will charge you the complaint processing fees.

8. Faults

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