Unipulse F805AT-CK Operation Manual page 112

Checker scale controller
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CAL. ERR. 7 (Calibration error)
Load cell output is negative.
Check that load cell is mounted in the correct direction; check that load is being applied to the load cell
in the correct direction; check that the +SIG. and -SIG. lines are propely connected.
Do Span Calibration again.
CAL. ERR. 8 (Calibration error)
Load cell output is beyond Span adjustment range.
Check how load is applied to load cell; check load cell has sufficient output(mV/V) to reach Span
range. Do Span Calibration again.
CAL. ERR. 9 (Calibration error)
The Load is not stable enough for correct Calibration.
Adjust the Stable Period and Stable Range of Motion Detection so "STAB" display lights during
Calibration. Do Calibration again.
14.TROUBLE SHOOTING
101

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