Emerson Process Management 5300 manual 00809-0100-4530, Rev BA July 19. Troubleshooting AI block

Rosemount 5300 Series

Reference Manual

00809-0100-4530, Rev BA July 2009

Table 7-19. Troubleshooting the

AI block

Symptom	Possible Causes	Recommended Actions
	BLOCK_ERR reads OUT OF	1. AI Block target mode set to OOS.
	SERVICE (OOS)	2. Resource Block OUT OF SERVICE.
	BLOCK_ERR reads	1. Check CHANNEL parameter (see “CHANNEL” on
	CONFIGURATION ERROR	page 5-39).
		2. Check L_TYPE parameter (see “L_TYPE” on page 5-39).
		3. Check XD_SCALE engineering units. (see “XD_SCALE
Bad or no level readings		and OUT_SCALE” on page 5-40.
(Read the AI “BLOCK_ERR” parameter)	BLOCK_ERR reads POWERUP	Download Schedule into block. Refer to host for downloading
		procedure.
	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	1. Check XD_SCALE parameter.
	are not correct. If using Indirect	2. Check OUT_SCALE parameter.
	mode, scaling could be wrong	(see “XD_SCALE and OUT_SCALE” on page 5-40).
OUT parameter status reads	Out_ScaleEU_0 and EU_100	See “XD_SCALE and OUT_SCALE” on page 5-40.
UNCERTAIN and substatus reads	settings are incorrect.
EngUnitRangViolation
Mode will not leave OOS	Target mode not set	Set target mode to something other than OOS.
	Configuration error	BLOCK_ERR will show the configuration error bit set. The
		following are parameters that must be set before the block is
		allowed out of OOS:
		CHANNEL must be set to a valid value and cannot be left at
		the initial value of 0.
		XD_SCALE.UNITS_INDX must match the units in the
		transducer block channel value.
		L_TYPE must be set to Direct, Indirect, or Indirect Square
		Root and cannot be left at the initial value of 0.
	Resource block	The actual mode of the Resource block is OOS. See
		Resource Block Diagnostics for corrective action.
	Schedule	Block is not scheduled and therefore cannot execute to go to
		Target Mode. Schedule the block to execute.
Process and/or block alarms will not work	Features	FEATURES_SEL does not have Alerts enabled. Enable the
		Alerts bit.
	Notification	LIM_NOTIFY is not high enough. Set equal to MAX_NOTIFY.
	Status Options	STATUS_OPTS has Propagate Fault Forward bit set. This
		should be cleared to cause an alarm to occur.
Value of output does not make sense	Linearization Type	L_TYPE must be set to Direct, Indirect, or Indirect Square
		Root and cannot be left at the initial value of 0.
	Scaling	Scaling parameters are set incorrectly:
		XD_SCALE.EU0 and EU100 should match that of the
		transducer block channel value.
		OUT_SCALE.EU0 and EU100 are not set properly.
Cannot set HI_LIMIT, HI_HI_LIMIT,	Scaling	Limit values are outside the OUT_SCALE.EU0 and
LO_LIMIT, or LO_LO_LIMIT Values		OUT_SCALE.EU100 values. Change OUT_SCALE or set
		values within range.

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