Emerson 644 manual 00809-0400-4728, Rev AA June AI Blockerr Conditions, Troubleshooting AI block

Rosemount 644

Reference Manual

00809-0400-4728, Rev AA June 2011

Table 3-6. AI BLOCK_ERR

Conditions.

		Condition
		Number	Condition Name and Description
		0	Other
		1	Block Configuration Error: the selected channel carries a measurement that
			is incompatible with the engineering units selected in XD_SCALE, the L_TYPE
			parameter is not configured, or CHANNEL = zero.
		3	Simulate Active: Simulation is enabled and the block is using a simulated
			value in its execution.
		7	Input Failure/Process Variable has Bad Status: The hardware is bad, or a
			bad status is being simulated.
		14	Power Up
		15	Out of Service: The actual mode is out of service.
Table 3-7. Troubleshooting the
AI block
Symptom	Possible Causes			Recommended Actions
	BLOCK_ERR reads OUT OF			1. AI Block target mode target mode set to OOS.
	SERVICE (OOS)			2. Resource Block OUT OF SERVICE.
	BLOCK_ERR reads			1. Check CHANNEL parameter (see “CHANNEL” on page 3-9)
	CONFIGURATION ERROR			2. Check L_TYPE parameter (see “L_TYPE” on page 3-10)
				3. Check XD_SCALE engineering units. (see “XD_SCALE and
				OUT_SCALE” on page 2-10
Bad or no temperature readings	BLOCK_ERR reads POWERUP			Download Schedule into block. Refer to host for downloading
(Read the AI “BLOCK_ERR”				procedure.
parameter)	BLOCK_ERR reads BAD INPUT			1. Sensor Transducer Block Out Of Service (OOS)
				2. Resource Block Out of Service (OOS)
	No BLOCK_ERR but readings are			1. Check XD_SCALE parameter.
	not correct. If using Indirect mode,			2. Check OUT_SCALE parameter.
	scaling could be wrong.			(see “XD_SCALE and OUT_SCALE” on page 3-10)
	No BLOCK_ERR. Sensor needs to			See Section 3: Operation and Maintenance to determine the
	be calibrated or Zero trimmed.			appropriate trimming or calibration procedure.
OUT parameter status reads	Out_ScaleEU_0 and EU_100			See “XD_SCALE and OUT_SCALE” on page 3-10.
UNCERTAIN and substatus reads	settings are incorrect.
EngUnitRangViolation.

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