Mold-Masters M2 - Appendix E - Sequence Valve Gate; The SVG or Sequence Valve Gate card operates in a cyclic manner

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Revised 1 Oct, 2014
E-1
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SEQUENCE VALVE GATE
The SVG or Sequence Valve Gate card operates in a cyclic manner
where it can open and close any of 12 remote gates up to four times
during each cycle.
Each zone is individually congurable to open and close in response
to:
• Time to the nearest 1/100th sec from receiving a cycle-start signal
• Position of the main barrel screw feed
• Pressure from a remote sensor located within the mould cavity
• A combination of these three triggers
Each zone has one digital output to activate a valve gate and two digi-
tal inputs to accept feedback signals, one to conrm that the associat-
ed gate is closed and another to conrm it is open.
The card also has further inputs that affect the overall control. There
are four digital inputs which comprise
• The “Cycle Start” input
• An “Enable” input which is closed while all systems are ready to
continue moulding
• Two user denable inputs for other functions
There are three analogue inputs two of which are primarily used to
receive a signal which is proportional to the physical position of two
different screw feeds. The third is reserved for future development.
Appendix E - Sequence Valve Gate