Vega VEGAPULS 69 Operating Instructions Manual

Also see for VEGAPULS 69: Operating instructions Mounting instructions Product information Quick setup guide Operating instructions

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Vega VEGAPULS 69 Operating Instructions Manual Manual pdf 62 page image

629 Diagnosis, asset management and serviceVEGAPULS 69 • 4 … 20 mA/HART - four-wire47249-EN-160407CodeText messageCause Rectification DevSpec State in CMD48M507Error in the instrument set-tings– Error during setup– Error when carrying outa reset– False signal suppressionfaulty– Carry out reset andrepeat setupBit 7 of Byte 14…249.4 Rectify faultsThe operator of the system is responsible for taking suitable meas-ures to rectify faults.The first measures are:• Evaluation of fault messages, for example via the display andadjustment module• Checking the output signal• Treatment of measurement errorsFurther comprehensive diagnostics options are available with a PCwith PACTware and the suitable DTM. In many cases, the reasons canbe determined in this way and faults rectified.Connect a multimeter in the suitable measuring range according tothe wiring plan. The following table describes possible errors in thecurrent signal and helps to eliminate them:Error Cause Rectification4 … 20 mA signal not sta-ble– Fluctuations of themeasured variable– Set damping appropriate to the instrument via thedisplay and adjustment module or PACTware/DTM4 … 20 mA signal missing – Electrical connectionfaulty– Check connection according to chapter "Connectionsteps" and if necessary, correct according to chapter"Wiring plan"– Voltage supply missing – Check cables for breaks; repair if necessary– Operating voltage toolow or load resistancetoo high– Check, adapt if necessaryCurrent signal greater than22 mA or less than 3.6 mA– Electronics module inthe sensor defective– Exchange the instrument or send it in for repairThe below tables show typical examples of application-relatedmeasurement errors with bulk solids. A distinction is made betweenmeasurement errors during:• Constant level• Filling• EmptyingThe images in column "Error pattern" show the real level as a brokenline and the level displayed by the sensor as a continuous line.Reaction when malfunc-tion occursProcedure for fault recti-ficationCheck the 4 … 20 mAsignalTreatment of measure-ment errors with bulksolids