Emerson Rosemount 3144P Reference Manual page 181

Reference Manual
00809-0100-4021
4.10.7 Analog input diagnostics
Table 4-8: AI BLOCK_ERR Conditions
Condition number
Table 4-9: Troubleshooting the AI block
Symptom
Bad or no
temperature
readings (Read the
AI "BLOCK_ERR"
parameter)
OUT parameter
status reads
UNCERTAIN and
substatus reads
EngUnitRangViolat
ion.
Reference Manual
Condition name and description
0 Other
Block Configuration Error: the selected channel carries a measurement
1 that is incompatible with the engineering units selected in XD_SCALE,
the L_TYPE parameter is not configured, or CHANNEL = zero.
Simulate Active: Simulation is enabled and the block is using a simulated
3
value in its execution.
Input Failure/Process Variable has Bad Status: The hardware is bad, or a
7
bad status is being simulated.
14 Power Up: Block is not scheduled.
15 Out of Service: The actual mode is out of service.
Possible causes
BLOCK_ERR reads OUT
OF SERVICE (OOS)
BLOCK_ERR reads
CONFIGURATION
ERROR
BLOCK_ERR reads
POWERUP
BLOCK_ERR reads BAD
INPUT
No BLOCK_ERR but
readings are not correct.
If using Indirect mode,
scaling could be wrong.
No BLOCK_ERR. Sensor
needs to be calibrated
or Zero trimmed.
Out_ScaleEU_0 and
EU_100 settings are
incorrect.
F Fieldbus Configuration
OUNDATION
Recommended actions
1. AI Block target mode target mode set to OOS.
2. Resource Block OUT OF SERVICE.
1. Check CHANNEL parameter (see CHANNEL).
2. Check L_TYPE parameter (see L_TYPE)
3. Check XD_SCALE engineering units. (see
XD_SCALE and OUT_SCALE)
Download schedule into block. Refer to host for
downloading procedure.
1. Sensor Transducer Block Out Of Service (OOS)
2. Resource Block Out of Service (OOS)
1. Check XD_SCALE parameter.
2. Check OUT_SCALE parameter. (see
and OUT_SCALE)
See HART Commissioning to determine the
appropriate trimming or calibration procedure.
See XD_SCALE and OUT_SCALE.
December 2019
XD_SCALE
181