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Distributed control device for hydraulic pump drives, e.g. in plastics injection molding machines, uses machine controller as digital pressure or quantity controller connected to valve circuitry
Distributed control device for hydraulic pump drives, e.g. in plastics injection molding machines, uses machine controller as digital pressure or quantity controller connected to valve circuitry
A machine controller (18) is provided separate from a pump unit (10,10'). The machine controller is formed as a digital pressure and/or quantity controller, (preferably comprising field programmable gate array (FPGA) or ASICs) which is at least indirectly connected to valve circuitry (14,14') via a bus system for outputting an actuating signal to the valve circuitry and for receiving signals from the valve circuitry. The control device includes a pivot angle sensor for determining volume flow.
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