Hydronix Hydro-Control VI, Руководство по установке

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Chapter 5 System Design
Hydro-Control VI Installation Guide HD0455 Rev 1.9.0 63
4.2
Simple Mix
A simpler mix control sequence is to load all of the raw materials into the mixer at the same
time and then perform a dry mix to being to homogenise the materials. The main water is then
added and the wet mix time is run before the ‘Mix Complete’ output is given to indicate that the
control system can empty the mixer. This is shown in Figure 43 with the I/O status.
Moisture
Time
Mixer
Loading
Dry Mix Time
Main Water
Addition
Wet Mix
Time
Inputs
Start
Water Meter
Optional Cement In
Reset
Outputs
Coarse Valve
Fine Valve
Mix Complete
Discharge
Figure 43: The Mix cycle showing the I/O status
The ‘Cement In’ signal is optional and may be used to control the timing of the cement addition.
The signal requirement can be configured in the recipe database by setting the parameter ‘Cement
Timeout’ to a non-zero value. The system will then wait until the ‘Cement In’ signal has been
received before starting the Dry Mix phase.
A timer is started when the system receives the Start signal and if this reaches the ‘Cement
Timeout’ before the ‘Cement In’ signal has been received the ‘Cement In Alarm’ will be triggered
unless this has been disabled on the System Parameters page.