Emerson manual Rosemount 848L, Reference Manual, 00809-0100-4696,Rev AA September

Page 27

Reference Manual

00809-0100-4696, Rev AA September 2004

Rosemount 848L

MAINT_ALARMS

A maintenance alarm indicates the device or some part of the device needs maintenance soon. If the condition is ignored, the device will eventually fail. There are five parameters associated with MAINT_ALARMS, they are described below.

MAINT_ENABLED

The MAINT_ENABLED parameter contains a list of conditions indicating the device or some part of the device needs maintenance soon. If the condition is ignored, the device will eventually fail.

Below is a list of the conditions with the highest priority first.

1.Secondary Value Degraded

2.Configuration Error

MAINT_MASK

The MAINT_MASK parameter will mask any of the failed conditions listed in MAINT_ENABLED. A bit on means that the condition is masked out from alarming and will not be reported.

MAINT_PRI

MAINT_PRI designates the alarming priority of the MAINT_ALM. The default is 0 and the recommended value is 3 to 7.

MAINT_ACTIVE

The MAINT_ACTIVE parameter displays which of the alarms is active. Only the condition with the highest priority will be displayed. This priority is not the same as the MAINT_PRI parameter described above. This priority is not user configurable.

MAINT_ALM

An alarm indicating the device needs maintenance soon. If the condition is ignored, the device will eventually fail.

Advisory Alarms

An advisory alarm indicates informative conditions that do not have a direct impact on the device's primary functions There are five parameters associated with ADVISE_ALARMS, they are described below.

ADVISE_ENABLED

The ADVISE_ENABLED parameter contains a list of informative conditions that do not have a direct impact on the device's primary functions. Below is a list of the advisories with the highest priority first.

1.Prescaler Overflow

2.NV Write Deferred

3.PWA Simulate Active

ADVISE_MASK

The ADVISE_MASK parameter will mask any of the failed conditions listed in ADVISE_ENABLED. A bit on means the condition is masked out from alarming and will not be reported.

ADVISE_PRI

ADVISE_PRI designates the alarming priority of the ADVISE_ALM. The default is 0 and the recommended value is 1 or 2.

3-7

Image 27

Contents 00809-0100-4696,Rev AA September Reference ManualFOUNDATION Fieldbus Rosemount 848L Discrete LogicTemperature Transmitter with Rosemount 848LRosemount 848L Table of ContentsSECTION 1 Introduction SECTION 2 Installation SECTION 3 ConfigurationRosemount 848L SECTION Operation and Maintenance APPENDIX AReference Data APPENDIX B Product Certifications APPENDIX C Function BlocksRosemount 848L APPENDIX D Logic Equation Syntax APPENDIX EMotor Control APPENDIX F Valve ControlRosemount 848L Reference ManualTOC-4 Rosemount 848L SAFETY MESSAGES WarningsSection IntroductionRosemount 848L OVERVIEWTransmitter ManualRosemount 848L Reference Manual00809-0100-4696,Rev AA September Reference Manual Rosemount 848LRosemount 848L InstallationSAFETY MESSAGES Warnings MOUNTING SectionReference Manual Mounting to a DIN Rail Without an EnclosureMounting to a Panel with a Junction Box Rosemount 848L00809-0100-4696,Rev AA September Mounting to a 2-InchPipe StandRosemount 848L Reference ManualReference Manual WIRINGPower Supply Connections Rosemount 848LRosemount 848L SWITCHESSurges/Transients GROUNDINGRosemount 848L Reference Manual00809-0100-4696,Rev AA September Rosemount 848L I/O WIRINGDISCRETE INPUT WIRING CONFIGURATION DISCRETE OUTPUT WIRING CONFIGURATIONTAGGING Rosemount 848LReference Manual Reference Manual INSTALLATION Using Cable GlandsTRANSMITTER LABEL Rosemount 848LUsing Conduit Entries Rosemount 848LReference Manual Rosemount 848L ConfigurationOVERVIEW SAFETY MESSAGES Warnings SectionGENERAL BLOCK INFORMATION Modes Rosemount 848LReference Manual Link Active Scheduler Block Instantiation Rosemount 848LReference Manual Reference Manual RESOURCE BLOCK FEATURES and FEATURES SELCapabilities Rosemount 848LMAX NOTIFY Rosemount 848LReference Manual PlantWeb Alarms Rosemount 848LReference Manual Rosemount 848L Reference Manual00809-0100-4696,Rev AA September Rosemount 848L Reference Manual00809-0100-4696,Rev AA September Alarms I/O TRANSDUCER BLOCK Rosemount 848LReference Manual LOGIC TRANSDUCER BLOCK Rosemount 848LReference Manual Figure 3-1.848L Logic Transmitter Data Flow Rosemount 848LReference Manual 00809-0100-4696,Rev AA SeptemberRosemount 848L Reference Manual00809-0100-4696,Rev AA September Rosemount 848L Reference Manual00809-0100-4696,Rev AA September Rosemount 848L Reference Manual00809-0100-4696,Rev AA September Rosemount 848L Reference Manual00809-0100-4696,Rev AA September Rosemount 848L Reference Manual00809-0100-4696,Rev AA September Rosemount 848L Reference Manual00809-0100-4696,Rev AA September Rosemount 848L Reference Manual00809-0100-4696,Rev AA September Rosemount 848L Reference Manual00809-0100-4696,Rev AA September DISCRETE INPUT BLOCKS Rosemount 848LReference Manual Rosemount 848L DISCRETE OUTPUT BLOCKSMULTIPLE DISCRETE INPUT BLOCK MULTIPLE DISCRETE OUTPUT BLOCKReference Manual Rosemount 848LRosemount 848L Section 4 Operation and MaintenanceFOUNDATION FIELDBUS INFORMATION SAFETY MESSAGES WarningsCommissioning MAINTENANCECommunication/Power Resetting the Configuration RESTARTNAMUR Sensors TROUBLESHOOTINGI/O Transducer and Logic Block Troubleshooting Resource BlockReference Manual Rosemount 848LRosemount 848L SPECIFICATIONS Functional SpecificationsAppendix A Reference DataRosemount 848L Reference Manual00809-0100-4696,Rev AA September Rosemount 848L Reference Manual00809-0100-4696,Rev AA September Reference Manual Physical Specifications Function BlocksSpecification Rosemount 848LDIMENSIONAL DRAWINGS Rosemount 848LReference Manual 00809-0100-4696,Rev AA September Figure A-3.Rosemount 848L Wiring DiagramRosemount 848L Reference ManualORDERING INFORMATION Rosemount 848LReference Manual Reference Manual Rosemount 848LLOCATIONS CERTIFICATES North American Approvals Appendix B Product CertificationsAPPROVED MANUFACTURING LOCATIONS EUROPEAN DIRECTIVE INFORMATION HAZARDOUSEuropean Approvals Rosemount 848LReference Manual Reference Manual Appendix C Function BlocksRESOURCE BLOCK PARAMETERS Rosemount 848LRosemount 848L Reference ManualFREE SPACE Rosemount 848L Reference ManualOUTPUT ADVISE ENABLE Rosemount 848LReference Manual 00809-0100-4696,Rev AA September I/O TRANSDUCER PARAMETERSRosemount 848L Reference ManualRosemount 848L Reference ManualTRANSDUCER TYPE Rosemount 848L Reference ManualOUT 3 TAG 00809-0100-4696,Rev AA September LOGIC TRANSDUCER PARAMETERSRosemount 848L Reference ManualDISCRETE INPUT BLOCK Rosemount 848LReference Manual Table C-4.Parameters Rosemount 848LReference Manual 00809-0100-4696,Rev AA SeptemberDISCRETE OUTPUT BLOCK Supported Modes Rosemount 848LReference Manual MULTIPLE DISCRETE INPUT BLOCKS Rosemount 848LReference Manual 00809-0100-4696,Rev AA September Rosemount 848LReference Manual MULTIPLE DISCRETE OUTPUT BLOCKTable C-7.Parameters and Rosemount 848LReference Manual 00809-0100-4696,Rev AA SeptemberAppendix D Logic Equation Syntax Rosemount 848LReference Manual Table D-1.Supported Functions Rosemount 848LReference Manual 00809-0100-4696,Rev AA SeptemberRosemount 848L Reference ManualPS channel number, divisor Reference Manual ERROR HANDLINGTable D-2.Error Handling Rosemount 848LEXAMPLES Rosemount 848LReference Manual Reference Manual Rosemount 848LRosemount 848L Appendix EMotor Control INTRODUCTION TO MOTOR CONTROLVARIATIONS ON MOTOR CONTROL Rosemount 848LReference Manual Rosemount 848L Reference Manual00809-0100-4696,Rev AA September WRITING 848L EQUATIONS Basic Motor Control Rosemount 848LReference Manual Interlock Permissive Emergency Shutdown Rosemount 848LReference Manual Restart Delay Rosemount 848LReference Manual Maximum Restarts Rosemount 848LReference Manual Winding Temperature Rosemount 848LReference Manual Hand-Off-Auto Rosemount 848LReference Manual Intermediate Stop Rosemount 848LReference Manual Redundant Motors - Alternate Start Rosemount 848LReference Manual Redundant Motors - Timed Switch Rosemount 848LReference Manual Rosemount 848L Reference Manual00809-0100-4696,Rev AA September Redundant Motors - Switch on Failure Rosemount 848LReference Manual Rosemount 848L Reference Manual00809-0100-4696,Rev AA September Rosemount 848L Reference ManualE-16 Rosemount 848L Appendix FValve Control INTRODUCTION TO VALVE CONTROLAlarms Variations on Valve Control Rosemount 848LReference Manual Boolean Expressions Basic Valve Control Rosemount 848LReference Manual Reference Manual Open-Auto-Close Alarm VariationsOutput Variations Output with Interlock Rosemount 848LSimple Valve Variations Permissive Rosemount 848LReference Manual Double Block and Bleed Rosemount 848LReference Manual Motorized Valve Heat Exchange Medium Selection Rosemount 848LReference Manual Reference Manual Rosemount 848L00809-0100-4696,Rev AA 9/17/04 IndexRosemount 848L Reference ManualRosemount 848L Reference Manual00809-0100-4696,Rev AA 9/17/04 Rosemount 848L Reference Manual00809-0100-4696,Rev AA 9/17/04 Rosemount 848L Reference ManualIndex-4 Reference Manual ¢00809-0100-4697F¤