Emerson Process Management MSL600 manual Technical reference, Maintenance, Troubleshooting

Page 49

Installation, Operation & Maintenance Manual

IP262/Z0, Rev. AB

February 2012

MSL600

8. Technical reference

8.1 Transmit pulse and echo processing

The transducer and it’s transmit and receive circuitry is optimized to work at 1.0MHz.

Some sludge blankets are indistinct.

The algorithm has been optimised to average out and ignore unwanted signals produced by particles in the supernatant, whilst detecting and measuring the wanted signals from the sludge blanket.

Although the algorithm is designed to largely ignore particles in the supernatant, the information (size and distance) is retained allowing a warning of this condition to be indicated.

9. Maintenance

The MSL600 should require no maintenance. It has no user serviceable parts inside.

Although the MSL603 transducer should keep its front face clean by self-cleaning the transducer should be inspected periodically to ensure that algae or floating debris is not collecting on its side or transducer face.

10. Troubleshooting

Refer to factory

Page 49

Image 49

Contents MSL600 Installation, Operation & Maintenance ManualContents MSL600 12.2 12.1Before Operating this Device the Manual should be Read Fully About this Manual About the MSL600Self-cleaning Important MSL600 featuresHuman Machine Interface Mounting bracketLocation As a systemCircular clarifiers Application planningRotating bridge Static bridge Rectangular clarifiersPreliminary checks InstallationLocation Mounting bracket attachmentAttaching the MSL600 Installing the bracket on the bridgeMSL600 mounting Transducer connections Power and other electrical connectionsExternal connection terminals Cable extension Display ProgrammingKeypad and Menu Navigation Contrast viewing angle controlOn-line/Off-line SecurityTank depth Bottom reference Quick start parametersDetermination of tank depth Transducer self-cleaningMA current output parameters Current output adjustRelay parameters AlarmTransducer out-of-water time Digital input Menu structure Detailed operationMain menu item Menu Item DescriptionParameter editing Direct accessScrolling Application parameters Installation parametersMain menu parameters Description P240 De-sludge parametersStart On P250 Stop On P251Start Time P253 Stop If P252Interval P254 Max Retries P257MA output parameters Cleaning parameters4 0/4-20mA P403 Alarm Action P402Alarm mode relay RL1 and RL2 parameters P540 to Relay RL1 mode P410 and RL2 mode P420Table B Relay Parameter numbers Set point mode relay RL1 and RL2 Fault mode relay RL1 and RL2 parameters P560 to P570De-sludge mode relay RL1 and RL2 On mode relay RL1 and RL2Relay On and Off Points Display parameters HMIRelay overrides Min ON, Max ON, and Min OFF HMI upper, middle, and lower display optionsClear Trend Backlight On/Off P575Clear Profile Logging parameters Low Mem Alarm P593Log Interval P590 Fast log P591Engineering parameters Parameter values Default Min Max 128 10241 Alg. Select P620 Common algorithm parameters P621 to P629Parameter values Default Min Max 9999 Upr S-nat Temp P625 Parameter values Default Min Max 100 Top Blanking P623Default Min Max +85 105 185 Noise Alrm Lev P622Default metric m/s Default Min Max +85 185 SoS constant P627Lwr S-nat Temp P626 Bottom Blanking P628Municipal 1 parameters P630 to P637 Parameter values Default Min Max Lost Echo Rnge P633Significance P630 Sharp Echo Reject P631Parameter values Default Min Max Lost Echo Time P637 Parameter values Default Min Max Dirty Mult P636Parameter values Default Min Max 255 Noise SD Mult P635Municipal 2 parameter P640 Parameter values Default Min Max 100Threshld Offset P640 Threshold level = Threshld Offset P640 + Noise Level D834System parameters Load Defaults functionAuto Cycle function Display testComms parameters P710 to P716 Settings parameters P730 to P737 and Base Units selectionFixed parameters D750 to D753 PIN parameter P740Readings parameters D800 to D834 Readings and diagnostics parametersDiagnostics parameters D835 to D852 Max Xdr Temp D851 Speed of Sound D850Min Xdr Temp D852 Troubleshooting MaintenanceTechnical reference Transmit pulse and echo processingSub-menu Level Parameter Title Par No Main Menu Option Programming chartProgramming chart … Direct 12.1 MSL600 SpecificationModel No OutputsAdditional specification notes Weight12.2 MSL603 transducer MSL600 Bridge mounted unit Dimensional drawingsMSL600 and MSL603 assembly Parts required MSL603 transducer cable extensionFitting instructions MSL600 MSL600 Emerson Process Management Rosemount Measurement