Vega VEGAPULS WL 61 Operating Instructions Manual

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

Contents

Vega VEGAPULS WL 61 Operating Instructions Manual Manual pdf 40 page image

4011 Diagnosis, asset management and serviceVEGAPULS WL 61 • 4 … 20 mA/HART - two-wire38061-EN-170830CodeText messageCause 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 … 2411.4 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 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 in thesensor defective • Exchange the instrument or send it in for repairReaction when malfunc-tion occursProcedure for fault recti-ficationCheck the 4 … 20 mAsignal