Abstract: A mineral material processing plant and a method for controlling thereof. The mineral material processing plant includes at least one motor, at least one actuator, a control system, an arrangement for holding the operating speed of the at least one actuator substantially unchanged. The control system is configured to control the processing plant in such a way that a change of amount and/or quality of material arriving to be processed is recognized and in response to the recognized change of amount and/or quality of the material arriving to be processed, the load of a motor is recognized, and in response to the recognized load of the motor, the running speed of the motor or motors of the mineral material processing plant is increased or decreased so that the operating speed of at least one actuator is held substantially unchanged.

Abstract: A mineral material processing plant and a method for controlling thereof. The mineral material processing plant includes at least one motor, at least one actuator, a feeder device, a control system, and an arrangement for recognizing a need to switch off a standby-mode. The control system is configured to control the processing plant in such a way that the need to switch off a standby mode is automatically recognized. In response to the recognized need to switch off the standby mode the running speed of a motor or motors of the mineral material processing plant is raised from a stand-by speed (Rsb) to a process speed (Rf); and the feeding of mineral material into the processing plant is enabled.

Abstract: A mineral material processing plant and a method for controlling thereof. The mineral material processing plant includes at least one motor, at least one actuator, a control system, an arrangement for holding the operating speed of the at least one actuator substantially unchanged. The control system is configured to control the processing plant in such a way that a change of amount and/or quality of material arriving to be processed is recognized and in response to the recognized change of amount and/or quality of the material arriving to be processed, the load of a motor is recognized, and in response to the recognized load of the motor, the running speed of the motor or motors of the mineral material processing plant is increased or decreased so that the operating speed of at least one actuator is held substantially unchanged.

Abstract: A mineral material processing plant and a method for controlling thereof The mineral material processing plant includes at least one motor, at least one actuator, a feeder device, a control system, and an arrangement for recognizing a need to switch off a standby-mode. The control system is configured to control the processing plant in such a way that the need to switch off a standby mode is automatically recognized. In response to the recognized need to switch off the standby mode the running speed of a motor or motors of the mineral material processing plant is raised from a stand-by speed (Rsb) to a process speed (Rf); and the feeding of mineral material into the processing plant is enabled.

Abstract: Hydraulic transmission system for a mineral material processing plant, which transmission system comprises at least two hydraulic first motors, which are arranged to drive at least one conveyor belonging to the mineral material processing plant, at least two first directional valves connected via the first actuator channels of the directional valves to each of the first motors, a hydraulic pump arranged to transfer hydraulic fluid via the first actuator channels of the directional valves to the first motors. The system also comprises pressure sensors. The first directional valves are valves that can be adjusted by external control during the running of the processing plant and which are arranged to control the volume flow of the hydraulic fluid supplied into the first motors. The control is made on the basis of the pressure of hydraulic fluid measured by pressure sensors in the first actuator channels the directional valves.