Patent ID: 7952314

Claim:
An electronic control device of an electrical drive system, comprising: a central processing unit, wherein the central processing is configured in normal mode to receive a sequence of setpoint position, setpoint speed or setpoint torque values from a control device that is of a higher order than the electronic control device, to determine setpoint current values on the basis of the received setpoint values and corresponding actual values and to transmit the setpoint current values to a further central processing unit of a drive unit that is of lower order than the electronic control device, in monitoring mode to check whether an electric motor controlled by the drive unit is in a safe state, and, in the event that the electric motor is not in the safe state, to output a first disconnection signal to a first disconnection device and to transmit a second disconnection signal to the further central processing unit of the drive unit so that a power supply of the electric motor is interrupted both by the first disconnection device and the drive unit, and in the monitoring mode to generate checking information, which in itself or in conjunction with at least one other signal transmitted to the further central processing unit of the electronic drive unit during monitoring mode is indicative as to whether the electronic control device is functioning correctly, and to transmit the checking information to the further central processing unit of the electronic drive unit.