Emerson Process Management MSL600 manual Fault mode relay RL1 and RL2 parameters P560 to P570

Page 33

Installation, Operation & Maintenance Manual

IP262/Z0, Rev. AB

February 2012

MSL600

7.6.1.2Fault mode (relay RL1 and RL2 parameters P560 to P570)

There are several fault conditions which can be assigned to a relay. Fault conditions may be selected to be signalled by relay, current, both relay and current, or not at all.

Messages describing active faults are automatically written to the lower HMI display.

When a fault condition occurs, a relay configured in fault mode will de-energise. Fault conditions are listed below:

￿Memory Fault - P560

A memory fault occurs if system memory has been corrupted. On occasion the control unit may indicate a memory fault when first powered up. This is normal because the unit is automatically loading default settings in to the memory. After the first power up this fault message should not occur again. All control units are first powered up prior to leaving the factory. If the memory fault message appears after the unit has been switched on and off at least once then consult the factory.

￿CU Temp Fault - P561

A fault is indicated if the temperature within the control unit exceeds pre-set limits.

￿Xdr Temp Fault - P563

A fault is indicated if the temperature within the transducer unit exceeds pre-set limits.

7.6.1.3Set point mode (relay RL1 and RL2)

The relays can be operated in set point mode. See also section 7.6.2.

For example:

If it is required to turn a pump on using relay 1 when the sludge blanket reaches a depth of 3.5m (11.5 ft), then 3.5 (11.5) is programmed in to P411 (RL1 on point).

Note:

It is advisable that the "On" and "Off" points are always set to different values, nominally 50mm (2 in/0.16ft) apart.

7.6.1.4De-sludge mode (relay RL1 and RL2)

The relay can be programmed to operate in de-sludge mode. The de-sludge parameters are described in section 7.3 of the manual.

7.6.1.5On mode (relay RL1 and RL2)

The relays can be switched permanently on if required.

7.6.1.6Off mode (relay RL1 and RL2)

The relays can be switched permanently off if required.

7.6.1.7None mode (relay RL1 and RL2)

If the relay mode is set to "None" then the relay remains in its last valid state i.e. if the relay is "On" and the mode is changed to "None", the relay remains "On".

7.6.1.8Sludge Level Limits mode (relay RL1 and RL2)

If the relay mode is set to Slg Lev Limits, the relay is energised above the Relay On point. It is also energised below the Relay Off point. However, the relay is de-energised in between the "On" and "Off" points.

7.6.1.9Temperature Over Limits mode (relay RL1 and RL2)

If the relay mode is set to Temp OL, the relay is energised above the minimum and maximum control unit operating temperatures. The relay is de-energised while temperatures are within the normal operating range.

Page 33

Page 32 Page 34
Image 33
Page 32 Page 34
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 systemApplication planning Circular clarifiersRotating 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 adjustAlarm Relay parametersTransducer out-of-water time Digital input Menu structure Detailed operationMain menu item Menu Item DescriptionDirect access Parameter editingScrolling Installation parameters Application 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 P402Relay RL1 mode P410 and RL2 mode P420 Alarm mode relay RL1 and RL2 parameters P540 toTable 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 optionsBacklight On/Off P575 Clear TrendClear 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 Speed of Sound D850 Max Xdr Temp D851Min 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 OutputsWeight Additional specification notes12.2 MSL603 transducer MSL600 Bridge mounted unit Dimensional drawingsMSL600 and MSL603 assembly MSL603 transducer cable extension Parts requiredFitting instructions MSL600 MSL600 Emerson Process Management Rosemount Measurement
Top Page Image Contents