Troubleshooting - Emerson Rosemount 3051 Manual

Rosemount Model 3051 Transmitter with F

Troubleshooting

C-6
TM
fieldbus Protocol
OUNDATION
Out of Service (OOS)—Channel outputs 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 and TB_DETAILED_STATUS.
Status Handling
Normally, the status of the output channels reflects the status of the
measurement value, the operating condition of the measurement
electronics, and any active alarm condition.
In Auto mode, PRIMARY_VALUE reflects the value and status quality
of the output channels.
Methods
Sensor Calibration
In order to calibrate the sensor, the following steps are performed by
the user calibration method:
1. Set MODE_BLK.TARGET = OOS.
2. Apply desired pressure (low pressure); allow to stabilize. Pressure
applied must be between range limits defined in
PRIMARY_VALUE_RANGE.
3. Set CAL_POINT_LO to applied pressure.
4. Apply desired pressure (high pressure); allow to stabilize. Pressure
applied must be between range limits defined in
PRIMARY_VALUE_RANGE and greater than CAL_POINT_LO +
CAL_MIN_SPAN.
5. Set CAL_POINT_HI to applied pressure.
6. Set SENSOR_CAL_DATE to current date.
7. Set SENSOR_CAL_WHO to person responsible for calibration.
8. Set SENSOR_CAL_LOC to calibration location.
9. Set MODE_BLK.TARGET = AUTO.
Refer to Table C-4 to troubleshoot any problems encountered.