Hydronix Hydro-Control VI, Installation Manual

Page: 51 / 104

Chapter 4 Commissioning
Hydro-Control VI Installation Guide HD0455 Rev 1.9.0 51
The Control Method parameter sets how the main water is added. If this is set to Preset then
the system will add the fixed quantity of water defined as the Main Water parameter in the
Water Addition section on page 1 of the recipe. If the method is set to Auto then the water is
added to reach the target defined in Moisture Target . If the method is set to Calculation then
the water is added based on a value calculated using the calibration parameters, the Moisture
Target
and the average reading taken during the Dry Mix phase of the mix cycle.
The Plus Tolerance and Minus Tolerance parameters are used at the end of the Wet Mix
phase. If the difference between the average moisture value taken at the end of the wet mix
phase and the target value is greater than the Plus Tolerance above the target, or greater than
the Minus Tolerance below the target, then the Mix Too Wet or Mix Too Dry alarms are
triggered. In AUTO Mode the Minus Tolerance is also used as a deadband for the target.
Local Auto-Track Settings
Auto-Track is the facility to configure the system to measure the stability or homogeneity of the
mix. If the sensor value is within a certain deviation for a set time, this function allows the mix
time to finish earlier.
Parameter Units Default Range
Initial Mix Enable None No Yes/No
Pre-wet Mix Enable None No Yes/No
Dry Mix Enable None No Yes/No
Wet Mix Enable None No Yes/No
Local Auto-Track Control None No Yes/No
Dry Mix Deviation % 0.1 0 – 100 %
Dry Mix Time Seconds 10 0 – 100 s
Wet Mix Deviation % 0.1 0 – 100 %
Wet Mix Time Seconds 10 0 – 100 s
Initial Mix Enable, Pre-wet Mix Enable, Dry Mix Enable and Wet Mix Enable parameters
can be used to set whether the auto track feature is used on any of the mix phases .
If the Local Auto-Track Control option is set then the Auto-Track parameters defined in the
recipe over-ride the parameters set in the System Parameters.
The Dry Mix Deviation , Dry Mix Time , Wet Mix Deviation and Wet Mix Time parameters are
used by the Auto-Track feature to control when the system finishes the dry and wet mix phases.
During the dry or wet mix phase, if the variation in the sensor value is less than the specified
Mix Deviation for the Mix Time then the mixing phase will continue to the next phase.
See the section on Auto-Track on page 66 for more details.
Pressing the Next button will display the third page of the recipe editor. This has
options for the Calculation Mode Settings and AUTO Mode Settings.