Emerson 3051N manual Physical Removal Local Zero and Span Local Keys

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Reference Manual

00809-0100-4808, Rev CA June 2008

Rosemount 3051N

Security Jumper (Write Protect)

Local Zero and Span

(Local Keys) Software

Lock Out

1.Security Jumper: prevents all writes to transmitter configuration.

2.Local Keys (Local Zero and Span) Software Lock Out: prevents changes to transmitter range points via local zero and span adjustment keys. With local keys security enabled, changes to configuration are possible via HART.

3.Physical Removal of Local Keys (Local Zero and Span) Magnetic Buttons: removes ability to use local keys to make transmitter range point adjustments. With local keys security enabled, changes to configuration are possible via HART.

NOTE

If the security jumper is not installed, the transmitter will continue to operate in the security OFF configuration.

You can prevent changes to the transmitter configuration data with the write protection jumper. Security is controlled by the security (write protect) jumper located on the electronics board or meter face. Position the jumper on the transmitter circuit board in the “ON” position to prevent accidental or deliberate change of configuration data.

If the transmitter write protection jumper is in the “ON” position, the transmitter will not accept any “writes” to its memory. Configuration changes, such as digital trim and reranging, cannot take place when the transmitter security is on.

To enable this feature, see “Local Span and Zero Control (Local Keys)” in Section 2.

Physical Removal of

Local Zero and Span

(Local Keys)

CONFIGURING TRANSMITTER ALARM AND SECURITY JUMPER PROCEDURE

To remove the magnetic buttons used to activate the local zero and span, use a small slotted head screwdriver and pry off the small, plastic cap located under the approval tag. Remove button assemblies and discard.

To reposition the jumpers, follow the procedure described below.

1.If the transmitter is installed, secure the loop and remove power.

2. Remove the housing cover opposite the field terminal side. Do not remove the transmitter covers in explosive atmospheres when the circuit is alive.

3.Reposition the jumpers as desired.

•Figure 2-1shows the jumper positions for Electronics Boards.

•Figure 2-2shows transmitters with an optional LCD meter.

4. Reattach the transmitter cover. Transmitter covers must be fully engaged to meet explosionproof requirements.

2-3

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Contents Reference Manual Important Notice -- Errata Rosemount 3051N Return of Material Changes from June 2006 to June OldChanges Rosemount 3051N Table of Contents Installation TroubleshootingSpecifications Reference Data Options Appendix aHart Communicator Glossary Index Section Introduction Using this ManualRosemount 3051N Transmitter Functions Overview Safety MessagesAlarm Level Verification TransmitterSecurity Physical Removal Local Zero and Span Local Keys Configuring Transmitter Alarm and Security Jumper ProcedureElectronics Board Setting the Loop to Manual Wiring Diagrams Bench Hook-up Wiring Diagrams Field Hook-up Review Configuration Data Check OutputProcess Variables Set Output Sensor TemperatureBasic Setup Set Process Variable UnitsRerange with a Communicator Only RerangeRerange with a Pressure Input Source and a Communicator Span and Zero Adjustment Buttons Diagnostics Service Detailed SetupTransmitter Test Loop TestCalibration Transmitter Bench Calibration Tasks Field Calibration Tasks Calibration Overview Configure the Analog Output ParametersURV Sensor TrimTypical Zero vs Non-zero-Based Application Illustrations Zero TrimDigital Trim Connection Drawing 4-20 mA Transmitters Full TrimAnalog Output Trim Digital-to-Analog Trim Using Other ScaleRecall Factory Trim Recall Factory Trim- Sensor Trim Recall Factory Trim- Analog OutputZero Effect HTc = URV + S URV Ps Rosemount 3051N Section Installation Rosemount 3051N Typical Installation Flowchart General Considerations Special Draft Range ConsiderationsMechanical Considerations 156 181 16 x 11/4 Bolts for Mounting to 54.1 Transmitter 120 127 66.8 Traditional Flange Option Code H2 Dimensional Drawing Mounting Rosemount 3051N GAS or Liquid Service GAS Service Steam Service Process Connections Housing Rotation Power SupplyElectrical Considerations Power Supply Load Limitations WiringAccess Requirements Cover Installation Grounding the Transmitter CaseEnvironmental Considerations Troubleshooting Returning Rosemount Products and Materials Symptom Corrective ActionsSeismic Nuclear SpecificationsModel Range Code Hydrostatic Test Pressure Drift Performance SpecificationsAmbient Temperature Effect12 Reference AccuracyRange Code Static Pressure Zero Effect1 Power Supply Effect Load Effect Mounting Position EffectOverpressure Effect Static Pressure Effect Range Code Overpressure EffectOutput Functional SpecificationsService Temperature LimitsSpan and Zero, Zero Elevation, Suppression Range Minimum Span Upper URL Lower LRLRange Code Minimum Time Constant Tc Including Dead Time Td Overpressure Limits Burst Pressure Maximum WorkingPressure12 Static Pressure LimitsPhysical Specifications Materials of Construction Option Code Description Add Ordering Information Meters optional Configuration InformationHousing Material Conduit Entry Size Mounting Bracket OptionsDate On Rosemount 3051N Exploded View with Coplanar Process Flange Rosemount 3051N Rosemount 3051N Section Options Overview Safety Messages LCD MeterCustom Meter Configuration Exploded View of the Rosemount 3051N with Optional LCD Meter Installing the MeterRosemount 3051N Error Diagnostic MessagesPress Limit Mounting Brackets OperationTransient Protection Terminal Block T1 Traditional Flange H2Transient Protection Terminal Block T1 Rosemount 3051N Appendix a Hart Communicator Introduction Safety MessagesRosemount 3051N Online Menu Function Hart Fast Key Sequence Connections and Hardware Figure A-3. Rosemount Hart terminal access doorFigure A-4. Bench Hook-up MA Transmitters Rosemount Communicator KeysAction Keys Function Keys Alphanumeric and Shift KeysData Entry Main Menu Fast Key SequencesFast Key Sequence Conventions Fast Key Sequence Example Menus FunctionsOnline Menu Touch Multifunction LED Processing Indication Alphanumeric KeysMultifunction LED Touch ScreenRosemount 3051N Diagnostic Messages Fast Key Sequences Hot Key optionsMessage Description Rosemount 3051N Uploadvariable Rosemount 3051N Rosemount 3051N Glossary Smart Family Index 00809-0100-4808, Rev CA June Security Page ¢00809-0100-4801V¤