Electric Service Load Management
First Claim
Patent Images
1. A method of managing electric service loads of a molding system, comprising:
- energising a first electrically powered system component;
energising a second electrically powered system component;
where (i) said electrical service load exceeds a threshold, or (ii) said electrical service load is expected to exceed said threshold, at least partially de-energising said first electrically powered system component.
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Accused Products
Abstract
The electric service load of a machine having at least one electric heater and at least one electric motor may be managed as follows. Where the electrical service load of the machine exceeds a threshold, which may result from transient in-rush current attendant upon start-up of an electric motor, or where this load is expected to exceed the threshold, at least one of the heaters may be de-energized. The heater may remain de-energized either for a pre-determined period of time or until the electrical service load falls below a further threshold.
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Citations
44 Claims
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1. A method of managing electric service loads of a molding system, comprising:
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energising a first electrically powered system component; energising a second electrically powered system component; where (i) said electrical service load exceeds a threshold, or (ii) said electrical service load is expected to exceed said threshold, at least partially de-energising said first electrically powered system component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A molding system, comprising:
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a first electrically powered system component; a second electrically powered system component; a machine controller for selectively controlling current to said first electrically powered system component and said second electrically powered system component, said machine controller operable to; energize said first electrically powered system component; energize one second electrically powered system component; where (i) said electrical service load exceeds a threshold, or (ii) said electrical service load is expected to exceed a threshold, at least partially de-energize said first electrically powered system component. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. An injection molding machine, comprising:
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a cold mold half; a hot mold half having runners for porting melt into a mold cavity formed between said hot mold half and said cold mold half; a hot mold electric heater for heating said hot mold half proximate said runners; an hydraulic cylinder for pressing said hot mold half and said cold mold half together; an electrical pump motor for pumping hydraulic fluid in said hydraulic cylinder; an injection unit for containing melt for injection into said mold cavity; an injection unit electric heater for heating said injection unit; a machine controller for selectively switching current to said hot mold electric heater, said injection unit electric heater, and said electric pump motor, said machine controller operable to; energize said hot mold electric heater and said injection unit electric heater to bring said injection unit and said hot mold half to a working temperature; de-energize, at least partially, at least one of said hot mold electric heater and said injection unit electric heater during a transient peak current requirement of said electrical pump motor; re-energize said at least one of said hot mold electric heater and said injection unit electric heater after subsidence of said transient peak current requirement to said electrical pump motor. - View Dependent Claims (26)
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27. A computer readable media containing computer executable instructions which, when executed by a machine controller in a molding system, cause said machine controller to:
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send a first control signal to energize a first electrically powered system component of a machine controlled by said machine controller; send a second control signal to energize a second electrically powered system component of said machine; where an electrical service load of said first electrically powered system component and said second electrically powered system component either (i) exceeds a threshold or (ii) is expected to exceed a threshold, send a third control signal to de-energize, at least partially, said first electrically powered system component. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. An apparatus for managing electric service loads, the apparatus comprising:
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means for energising a first electrically powered system component; means for energising a second electrically powered system component; means for de-energising, at least partially, said first electrically powered system component when (i) said electrical service load exceeds a threshold, or (ii) said electrical service load is expected to exceed said threshold. - View Dependent Claims (44)
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Specification