Hydronix Hydro-Control VI Operator's Manual page 59

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Chapter 9
Too Much Water Calculated Alarm
This alarm is triggered in CALC Mode when the calculated water required is above the 'Water Limit'
parameter defined in the recipe.
Check:
The recipe 'Water Limit' parameter is high enough.
The calibration of the recipe is still correct. It may be necessary to recalibrate the recipe
using the Preset mode.
Pre-wet Target Not Reached Alarm
This alarm triggers during AUTO Mode water addition during the Pre-wet phase if the added water
has reached the Pre-wet Water Limit defined in the recipe and the sensor moisture value has not
reached the Pre-wet Target.
Check:
The Pre-wet target is low enough.
The AUTO mode is tuned correctly.
The Pre-Wet Water Limit is set high enough.
Mix Too Dry Alarm
Mix Too Wet Alarm
These alarms are triggered at the end of the Wet Mix Phase if the average moisture recorded
during the Recipe Averaging Time is below or above the target by more than the 'Minus Tolerance'
or 'Plus Tolerance' parameters specified in the recipe. The mix can then be rejected or accepted
by the operator and this is recorded in the mix log. If the mix is rejected then the operator also has
an option to activate the 'Mix Complete' signal.
Check:
The calibration is correct, in particular the stability of the signal at the end of the mixes
(indicated in the Mix Log by the Mix Time Deviation). A more stable signal will give a much
more repeatable result.
The tolerances in the recipe parameters can be increased, if necessary, to decrease the
number of alarms.
Water Limit Exceeded Alarm
In AUTO Mode this alarm is triggered if the water addition has reached the 'Water Limit' parameter
defined in the recipe.
Check:
The recipe 'Water Limit' parameter is high enough.
The AUTO Mode tuning should be adjusted to not overshoot the target value.
Hydro-Control VI Operators Guide HD0456 Rev 1.7.1
Alarm Configuration
59

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