Hydronix Hydro-Control VI Installation Manual page 53

Chapter 4
example, if the main water addition is 70 litres and the Admix Enable is set to 50% the Admix
signal will be activated when the added water reaches 35 litres.
The Admix Amount parameter is used to set the amount of Admix used in a recipe. This is
only used to display in the Mix Log.
Temperature Correction Settings
Parameter
Temperature Set Point
Temperature Coefficient
The temperature correction settings are designed to allow system designers to compensate for
the effects of hot or cold weather on the reactions in the concrete by changing the target
moisture depending on the temperature. To this end, the settings allow the Target to be
changed by the Temperature Coefficient in proportion to the difference of the current
temperature from the Temperature Set Point. The equation is:
NewT et OldT
arg = arg
AUTO Mode Settings
Parameter
Local Auto Control
Proportional Gain
Integral Gain
Derivative Gain
The Local Auto Control parameter sets the recipe to use the local recipe values for the AUTO
Mode loop rather than the parameters entered in the System Parameters section.
The Proportional, Integral and Derivative Gain parameters control the water valves during
AUTO Mode. They compare the current sensor value with the target and generate a control
signal for the speed of water addition (during the process the speed of water addition is
controlled initially by opening the coarse and fine valve fully and, as the error is reduced, by
closing the coarse valve and varying the pulse rate of the fine valve). Optimising these
parameters is described in the Operators Guide in the chapter 'Using Moisture Control'.
Units
°C
%M/°C
et Temperatur eCoefficie
+
Units
None
None
None
None
Default
20
0
nt Temperatur eSetPo
* (
Default
No
5
0
0
Hydro-Control VI Installation Guide HD0455 Rev 1.9.0
Commissioning
Range
0 – 100 °C
-9.9999 – 9.9999
CurrentTem perature
int −
Range
Yes/No
-100 – 100
-100 – 100
-100 – 100
)
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