A&D AD-4430B Spezifikationen PDF herunterladen (Seite 38)

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7. Maintenance

7.1. Error Messages

If an error message is displayed, refer to the chart below to take proper measures.

Error message Cause Treatment

Program checksum error. Repair is required.

Data can not be acquired from

the A/D converter.

Repair is required.

Correct data can not be read

from the FRAM.

Perform initialization. If initialization does not clear

the error, repair is required.

Calibration data is not correct. Perform calibration.

Calibration error. X : number. Refer to “5.3.8. Error Codes for the Calibration ”.

The setting value is out of the

settable range.

Check the setting value and set again.

7.2. Verifying The Load Cell Connections ( DIAGNOS )

7.2.1. Guideline To Verify The Load Cell Connections

The faulty wiring or disconnection of the load cell can be checked.

This verification is useful for new setting, pre-measurement inspection and periodical inspection.

No. Check Item Target Judgment Criteria (Generally)

1 Load cell input voltage Between SEN+ SEN- 3 V or more

2 SEN+ voltage Between SEN+ AGND 4 V or more

3 SEN- voltage Between SEN- AGND 1 V or less

4 Load cell output voltage Between SIG+ SIG- Within ±35 mV

5 Load cell output rate Between SIG+ SIG- Within ±7 mV/V

6 SIG+ voltage Between SIG+ AGND 1 V to 4 V

7 SIG- voltage Between SIG- AGND 1 V to 4 V

8 Internal temperature -20 °C to +60 °C

AGND : Internal analog circuit ground

SIG- : Load cell output (-)

SIG+ : Load cell output (+)

EXC- : Load cell input (-)

SEN- : Sensing input (-)

SEN+ : Sensing input (+)

EXC+ : Load cell input (+)

SHLD : Shield. Frame ground.

Illustration 11 Wire Name of Load Cell

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 55 56

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A&D AD-4430B Spezifikationen Seite 38