Vega VEGAPULS 61 Operating Instructions Manual

Also see for VEGAPULS 61: Operating instructions Quick setup guide Operating instructions Operating instructions Operating instructions

Contents

Vega VEGAPULS 61 Operating Instructions Manual Manual pdf 68 page image

689 Diagnosis, asset management and serviceVEGAPULS 61 • 4 … 20 mA/HART - two-wire36499-EN-170405CodeText messageReason Rectification DevSpecState in CMD 48M503Measurement reli-ability too low• The echo/noise ratio is too smallfor reliable measurement • Check installation and processconditions• Clean the antenna• Change polarisation direction• Use instrument with highersensitivityBit 3 ofByte 14 … 24M504Error at a device in-terface• Hardware defect • Check connections• Exchanging the electronics• Send instrument for repairBit 4 ofByte 14 … 24M505No echo available• Level echo can no longer bedetected • Clean the antenna• Use a more suitable antenna/sensor• Remove possible false echoes• Optimize sensor position andorientationBit 7 ofByte 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 via the adjustment device• 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 Reason 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 in thesensor defective • Exchange the instrument or send it in for repairReaction when malfunc-tion occursProcedure for fault recti-ficationCheck the 4 … 20 mAsignal