Emerson 3051S Specifikace stáhnout pdf (Strana 143)

Reference Manual

00809-0200-4801, Rev CA

July 2010

B-13

Rosemount 3051S

Advanced HART Diagnostics Suite

(Option Code DA2)

The 3051S provides Abnormal Situation Prevention indication for a breakthrough in

diagnostic capability. The 3051S ASP Diagnostics Suite for HART includes Statistical

Process Monitoring (SPM), variable logging with time stamp and advanced process alerts.

The enhanced EDDL graphic display provides an intuitive and user-friendly interface to better

visualize these diagnostics.

The integral SPM technology calculates the mean and standard deviation of the process

variable 22 times per second and makes them available to the user. The 3051S uses these

values and highly flexible configuration options for customization to detect many user-defined

or application specific abnormal situations (e.g. detecting plugged impulse lines and fluid

composition change). Variable logging with time stamp and advanced process alerts capture

valuable process and sensor data to enable quick troubleshooting of application and

installation issues.

FOUNDATION fieldbus

Power Supply

External power supply required; transmitters operate on 9.0 to 32.0 Vdc transmitter terminal

voltage.

Current Draw

17.5 mA for all configurations (including LCD display option)

OUNDATION fieldbus Parameters

Standard Function Blocks

Resource Block

• Contains hardware, electronics, and diagnostic information.

Transducer Block

• Contains actual sensor measurement data including the sensor diagnostics and the ability

to trim the pressure sensor or recall factory defaults.

LCD Block

• Configures the local display.

2 Analog Input Blocks

• Processes the measurements for input into other function blocks. The output value is in

engineering or custom units and contains a status indicating measurement quality.

PID Block with Auto-tune

• Contains all logic to perform PID control in the field including cascade and feedforward.

Auto-tune capability allows for superior tuning for optimized control performance.

3051SMV and 3051SF_1-7

3051S and 3051SF_D with HART Diagnostics

(option code DA1)

Maximum Loop Resistance = 43.5 * (Power Supply Voltage – 12.0)

The HART communicator requires a minimum

loop resistance of 250



for communication.

Schedule Entries 14 (max.)

Links 30 (max.)

Virtual Communications Relationships (VCR) 20 (max.)

Voltage (Vdc)

Load (Ohms)

Operating

Region

1322

1000

500

12.0 20 30

42.4

1 2 ... 138 139 140 141 142 143 144 145 146 147 148 ... 239 240

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