Sequence Error - Unipulse F159 Operation Manual

9.ERROR CODE

9-2-3. Sequence Error

Sequence Error 1
This error occurs when you try to start measuring sequence (Start signal turned
ON) while Stop signal is still ON. Remove this error by changing stop signal
OFF → ON → OFF, then re-start weighing sequence with the stop signal OFF.
Sequence Error 2
Sequence Error 2 occurs when stop signal turns on while a measuring process
using sequence control is underway. Change the stop signal from OFF to ON to
remove the error.
Sequence Error 3
Sequence error 3 occurs when the system falls into the state of ZALM while it is
performing auto zero in using sequence control.
To clear ZALM, remove the cause of zero shift (adherence of foreign object, etc.)
and reset Digital Zero.
Change stop signal from OFF to ON to remove the sequence error.
Sequence Error 4
This error occurs when you try to start measuring sequence (Start signal turned
ON) while Near zero signal is still OFF "0". (Note that you can select a setting to
ignore Near zero when the sequence starts.)
First, check the relation between the set value for Near zero and the reference for
comparison, and then check the following:
・ Sequence started prematurely while material still remains in the metering tank
・ Start turned ON prematurely
・ Material can not be discharged properly, due to valve blockage, etc.
Change stop signal from OFF to ON to remove the sequence error.
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