Rosemount 8732 Series, Справочное руководство

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Reference Manual
00809-0100-4663, Rev BA
January 2010
G-5
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-5 lists 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
MODES
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.
Alarm Detection
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.
Status Handling
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.
Value Name and Description Corrective Action
0x00000001 DSP hardware not compatible
with software Send to service center
(1)
(1) See Section 6: Maintenance and Troubleshooting for detailed instructions on how to return
products to an authorized service center or factory.
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
communicating Replace electronics
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