640 Doran Scale Exam Table Error Messages
| Error Message | Symptom | Check |
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The setup parameters loaded in nonvolatile memory have become corrupted. | Reset all parameters to factory default with the rst parameter. |
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The A/D communication is not detected. | Ensure the cable is connected to the rear of the indicator. |
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Motion Error, weight reading during calibration is too unstable. This error is displayed during zero or span calibration attempt. Error will disappear when platform becomes stable. | Refer to:Calibration Procedure |
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The span calibration is out of range. This error is displayed after a span calibration attempt. | Place the proper weight on the platform and press Length to perform the span calibration again. Refer to:Calibration Procedure |
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The span calibration is in a negative range. This error is displayed after a span calibration attempt. | Place the proper weight on the platform and press Length to perform the span calibration again. Refer to: Calibration Procedure |
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The scale is underload. The load on the scale platform is less than the calibration zero level by more than 20% of the scale capacity. | Add table top to scale platform. If problem persists, recalibrate. Refer to:Calibration Procedure |
| Check if table was lifted by the upholstered top. | ||
| Check if cable between indicator and platform is disconnected or damaged. | ||
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The scale is in overload. The load on the scale platform exceeds the scale capacity by more than 105%. | Remove excess weight from scale platform. If problem persists, recalibrate. Refer to:Calibration Procedure |
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The scale is in an extreme overload condition. The load on the scale platform exceeds the scale input range, or there is a bad connection between indicator and platform. | Immediately remove excess weight from scale platform as damage can occur. |
| Check if cable between indicator and platform is disconnected or damaged. | ||
| Check if load cell or mounting weldment is bent or damaged. | ||
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The scale is in an extreme underload condition. No signal or very low signal, is detected. This error occurs when the raw counts present at the scale’s input falls below 250. | Check if table was lifted by the upholstered top. |
| Check if cable between indicator and platform is disconnected or damaged. | ||
| Check if load cell or mounting weldment is bent or damaged. | ||
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The span calibration is out of range. | Check connections between indicator and base. Press Length to perform the zero calibration again. Refer to:Calibration Procedure |
