Reference Manual

00809-0100-4663, Rev BA January 2010

Rosemount 8732

TRANSDUCER BLOCK DIAGNOSTICS

In addition to the BLOCK_ERR and XD_ERROR parameters, more detailed information on the measurement status can be obtained via DETAILED_STATUS. Table G-5lists the potential errors and the possible corrective actions for the given values. Reset the transmitter by cycling power and then, if the error persists, perform the corrective action as described in Table G-5.More detailed and descriptive corrective actions are listed in Section 4: Operation and Section 6: Maintenance and Troubleshooting.

Table G-5.

TB_DETAILED_STATUS

Descriptions and Corrective

Actions

Value

Name and Description

Corrective Action

0x00000001

DSP hardware not compatible

Send to service center(1)

 

with software

 

0x00000002

Electronics failure

Replace the electronics board

 

 

stack

0x00000004

Coil drive open circuit

Perform sensor electrical

 

 

resistance checks

0x00000008

Empty Pipe Detected

Verify sensor is full

0x00000010

Calibration failure

Cycle transmitter power to clear

 

 

message

0x00000020

Auto Zero failure

Repeat Auto Zero process

0x00000040

Sensor high limit exceeded

Lower the process flowrate

0x00000080

Sensor processor not

Replace electronics

 

communicating

 

0x00000100

Universal Trim failure

Re-run Universal Trim with steady

 

 

state flow

0x00000200

Reverse flow detected

Verify sensor is not installed

 

 

backwards

0x00000400

Electronics Temp outside limits

Status message –

 

 

no corrective action

0x00002000

High Process Noise

Increase the coil drive frequency to

 

 

37.5 Hz

0x00008000

Grounding/Wiring Fault

Connect process grounding

(1)See Section 6: Maintenance and Troubleshooting for detailed instructions on how to return products to an authorized service center or factory.

MODES

Alarm Detection

Status Handling

The transducer block supports two modes of operation as defined by the MODE_BLK parameter:

Automatic (Auto)—The channel outputs reflect the analog input measurement.

Out of Service (O/S)—The block is not processed. Channel outputs are not updated and the status is set to BAD: OUT OF SERVICE for each channel. The BLOCK_ERR parameter shows OUT OF SERVICE. In this mode, you can make changes to all configurable parameters. The target mode of a block may be restricted to one or more of the supported modes.

Alarms are not generated by the transducer block. By correctly handling the status of the channel values, the down stream block (AI) will generate the necessary alarms for the measurement. The error that generated this alarm can be determined by looking at BLOCK_ERR and XD_ERROR.

Normally, the status of the output channels reflects the status of the measurement value, the operating condition of the measurement electronics card, and any active alarm condition.

G-5

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Emerson Process Management 8732 manual Transducer Block Diagnostics, Alarm Detection Status Handling