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.

 

 

 

 

 

 

3-22

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