Emerson Process Management Important MSL600 features, Human Machine Interface, Self-cleaning

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Installation, Operation & Maintenance Manual

IP262/Z0, Rev. AB

February 2012

MSL600

Finally, sections 9 to 13 cover maintenance, troubleshooting, programming chart, technical specifications and dimension drawings relevant to using the MSL600 system.

1.3 Important MSL600 features

The MSL600 system incorporates several unique design features which are intended to promote trouble free operation, give a degree of installation flexibility, and allow ease of installation.

1.3.1Human Machine Interface

In common with other Mobrey Measurement control units, the MSL600 makes use of the Mobrey Measurement Human Machine Interface (HMI). The HMI reflects comments and suggestions received about the need to be easy and intuitive to use. The intention is that you should be able to program and interrogate the system using the integral membrane keypad and Liquid Crystal Display (LCD) without the need for regular reference to this manual. For the more experienced user, the HMI also facilitates rapid navigation of the menu structure to system parameters.

1.3.2Self-cleaning

One of the most important features of the MSL600 is its transducer self-cleaning facility.

In the application for which the system is designed, the transducer is normally mounted in a relatively hostile environment. In this environment, the likelihood of the transducer becoming coated or otherwise fouled is relatively high. A fouled transducer is far less efficient at transmitting sonar pulses into the supernatant. Without the ability to automatically clean itself, the transducer maintenance cycle would need to be more regular, and thus increase the life cost of the system.

Experience suggests that any moving mechanical cleaning devices are themselves prone to fouling. It is for this reason that the MSL600 uses an air purge cleaning function. Extensive experimental results show that this method is extremely effective in keeping the face of the transducer free from any coating growth or build-up of floating debris.

The cleaning cycle is optimised for maximum efficiency. However, you can manually initiate a cleaning cycle or override this feature by turning it off.

1.3.3Mounting bracket

Most clarifier tanks have railings on the walkway, rotating or moving bridge or walkway. It is recommended that the MSL600 be mounted on these railings. The MSL600 system is supplied with a purpose designed mounting bracket. This bracket design has been optimised to fit most designs of railing. This is intended to provide alignment and a stable platform for the transducer and control unit.

The transducer and mounting bracket, collectively known as an MSL603, are intended to be fitted to the clarifier before the MSL600 control unit is attached to them. This allows mechanical adjustment and fitting without the need to worry about the electronics in the enclosure.

The transducer mounting arrangement is hinged so that the transducer can be lifted out of the water, using the chain provided, for ease of maintenance (in most cases this will not be necessary because the transducer is self- cleaning). When installed, the transducer front face should be continually immersed in water to a depth of approximately 75mm (3 inches). The MSL600 mounting bracket should allow sufficient adjustment for this in most cases. Extensions and extra tubes are readily available from a number of sources to allow the mounting to be modified – contact Mobrey Measurement Sales for assistance (see section 3.3.3 for other sources).

Note:

The MSL603 transducer can also be supplied without mounting hardware and is supplied complete with

10 metres (33 feet) of connecting cable and air hose for the self-cleaning system. This allows the installer to provide their own mounting arrangements using suitable 25mm (1 inch) pipe or conduit. This arrangement is normally supplied for fixed bridges or enclosed tanks where a pivoting sensor is not required.

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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 MSL600Mounting bracket Important MSL600 featuresSelf-cleaning Human Machine InterfaceLocation As a systemCircular clarifiers Application planningRotating bridge Static bridge Rectangular clarifiersMounting bracket attachment InstallationPreliminary checks LocationAttaching 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 Item Description Detailed operationMenu structure Main menu itemParameter editing Direct accessScrolling Application parameters Installation parametersMain menu parameters Stop On P251 De-sludge parametersDescription P240 Start On P250Max Retries P257 Stop If P252Start Time P253 Interval P254MA 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 On mode relay RL1 and RL2 Fault mode relay RL1 and RL2 parameters P560 to P570Set point mode relay RL1 and RL2 De-sludge mode relay RL1 and RL2HMI upper, middle, and lower display options Display parameters HMIRelay On and Off Points Relay overrides Min ON, Max ON, and Min OFFClear Trend Backlight On/Off P575Clear Profile Fast log P591 Low Mem Alarm P593Logging parameters Log Interval P590Common algorithm parameters P621 to P629 Parameter values Default Min Max 128 1024Engineering parameters 1 Alg. Select P620Noise Alrm Lev P622 Parameter values Default Min Max 100 Top Blanking P623Parameter values Default Min Max 9999 Upr S-nat Temp P625 Default Min Max +85 105 185Bottom Blanking P628 Default Min Max +85 185 SoS constant P627Default metric m/s Lwr S-nat Temp P626Sharp Echo Reject P631 Parameter values Default Min Max Lost Echo Rnge P633Municipal 1 parameters P630 to P637 Significance P630Noise SD Mult P635 Parameter values Default Min Max Dirty Mult P636Parameter values Default Min Max Lost Echo Time P637 Parameter values Default Min Max 255Threshold level = Threshld Offset P640 + Noise Level D834 Parameter values Default Min Max 100Municipal 2 parameter P640 Threshld Offset P640Display test Load Defaults functionSystem parameters Auto Cycle functionComms 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 Transmit pulse and echo processing MaintenanceTroubleshooting Technical referenceSub-menu Level Parameter Title Par No Main Menu Option Programming chartProgramming chart … Direct Outputs Specification12.1 MSL600 Model NoAdditional 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
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