The present invention discloses a control system and method for injection molding machine. The control method comprises the following steps: establishing a work command according to a plurality of production process parameters; receiving a position information directly from an injection molding machine; and controlling a servo pump to drive the injection molding machine according to the position information and the work command.

A temperature control apparatus includes a temperature control branch connected to a feed line for a temperature control medium, a pump system including a pump for conveying the medium, a pump open-loop or closed-loop control device for controlling the output of the pump system, a throttle device having a variable degree of opening for throttling a quantitative through-flow of the medium in the temperature control branch, and an open-loop or closed-loop control device with the degree of opening of the throttle device as a setting value and with a control variable from the group: degree of opening of the throttle device, temperature, temperature difference, through-flow, pressure or a physical value to be derived from that group. The pump open-loop or closed-loop control device provides for open-loop or closed-loop control of the delivery output of the pump system depending on the degree of opening of the throttle device.

A method for operating a hydraulic system of an industrial machine, which hydraulic system comprises an actuator and a hydraulic pump which are connected fluidically via a hydraulic line which is assigned a pressure sensor. The hydraulic pump comprises an electric motor and a pump head driven by the latter. A pressure within the hydraulic line is measured via the pressure sensor, and a first pressure value is generated therefrom. A second pressure value is determined on the basis of operating data of the electric motor and a theoretical model. A fault is detected if the first pressure value differs from the second pressure value by more than a tolerance value. An industrial machine is also provided.