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Siemens sitrans LR 400 Instruction Manual
Also see for SITRANS LR 400: Instruction manualInstruction manual and users guideInstruction manualInstruction manualQuick start manual
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7ML19985FH03 SITRANS LR 400 ñ INSTRUCTION MANUAL Page 67TroubleshootingFault MessagesThe device indicates faults with a flashing letter on the right of the first line of the display.It has the following meaning:ï W: Warning ñ device is still ready for operation but faults may occurï F: Fault ñ sporadic fault, device conditionally ready for operationï D: continuous fault ñ device is not ready for operationUnder Parameter 3.1.x, you will find a fault log which indicates the type of the fault(s) thatoccured. It indicates the device function status in which the fault occurred and outputs anfault message in plain text.An incorrectmeasured valueappears after Auto-Setup.The device is notparameterizedcorrectly according tothe applicationSet the device parameters and functionsmanually.No measured valueappears after theAuto-Setup(measured value 0 andthe fault displayflashes)Internal fault Call the fault display in Function 3.1.Proceed as described in Maintenance on page 69.Material movementbut output remainsconstantVarying signal movesout of trackingwindow toofrequently.Set Window Tracking( 4.2.3.4) to OFF.SITRANS LR 400 reads100% continually.Check antenna formaterial buildup. Clean antenna or order a purge (self-cleaning) kit.Nozzle interference,or end of horn is notinside vesselShorten nozzle or lower position of SITRANSLR 400.SITRANS LR 400reading stays aboveactual levelFalse echo fromvessel (fixedobstruction)Use 4.2.3.8 and 4.2.3.9 Auto False EchoSuppressions functionSITRANS LR 400 readslow or empty whenmaterial level is highMultiple or indirectecho detectedinstead of first echo.Set 4.2.3.2 Multiple Echo Tracking to ON. Try usingLiquid Store application type 4.2.2.1.Highly sloped surfaceAim the SITRANS LR 400 using shims or order anEasy Aimer kit. Contact your Siemensrepresentative for service and possible Userparameter support.SITRANS LR 400reading is too slow.Damping too high Decrease 4.2.3.1 Sensor DampingDecrease Level DampingSet 4.2.3.4 to OFF (Window Tracking)Wndow Tracking wastoo slow.Optical Keypaddoesnít functionPoor reflection fromfingers Try using a white object, like a business card.Alignment problemwith glass windowOpen cover and try optical elements with coverremoved.Defective keypad Return for replacement.SITRANS LR 400reading is driftingSloped materialsurface Increase damping.Symptom Possible causes Remedy |
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