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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
Program checksum error.
Data can not be acquired from
the A/D converter.
Correct data can not be read
from the FRAM.
Calibration data is not correct. Perform calibration.
Calibration error. X : number.
X
The setting value is out of the
settable range.
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
1 Load cell input voltage
2 SEN+ voltage
3 SEN- voltage
4 Load cell output voltage
5 Load cell output rate
6 SIG+ voltage
7 SIG- voltage
8 Internal temperature
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.
Cause
Repair is required.
Repair is required.
Perform initialization. If initialization does not clear
the error, repair is required.
Refer to "5.3.8. Error Codes for the Calibration ".
Check the setting value and set again.
Between SEN+
Between SEN+
Between SEN-
Between SIG+
Between SIG+
Between SIG+
Between SIG-
- 36 -
Target
Judgment Criteria (Generally)
SEN-
3 V or more
AGND 4 V or more
AGND 1 V or less
SIG-
Within ±35 mV
SIG-
Within ±7 mV/V
AGND 1 V to 4 V
AGND 1 V to 4 V
-20 °C to +60 °C
Illustration 11 Wire Name of Load Cell
Treatment
AD-4430B
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