Patent ID: 8575869

Claim:
A control arrangement of a transport system, which transport system comprises: a motor for moving a transport appliance; a power supply circuit of the motor connected between the motor and a power source that is limited (P lim ) in its dimensioning; an energy storage, limited (E lim ) in its capacity, fitted in connection with the power supply circuit of the motor, for supplying power between the energy storage and the power supply circuit of the motor; a determination of a charging status (E Q ) of the energy storage; a determination of a movement reference of the transport appliance; and a control of the movement of the transport appliance as a response to the movement reference of the transport appliance, wherein the movement reference of the transport appliance is determined based on a travel distance of the transport appliance and an amount of energy that can be discharged from the energy storage when the transport appliance moves vertically in a heavy direction and is determined based on the travel distance of the transport appliance and an amount of energy that can be charged into the energy storage when the transport appliance moves vertically in a light direction that is opposite to the heavy direction.