Abstract: A converter assembly, a method for producing a converter assembly and a method for operating a converter assembly are described, in which a base module includes power electronics and control electronics. The base module includes a housing, particularly a housing part at least partially forming a housing for the power electronics and control electronics. The base module includes an electrical and mechanical interface, via which signal electronics are able to be joined to the base module with form-locking and/or force-locking, in order to form the converter assembly. The signal electronics include a housing, especially so that after being joined, the housing of the signal electronics and the housing of the base module together form a housing of the converter assembly. A setpoint value for speed and/or torque is transmittable electrically via the interface, the signal electronics having means for receiving, determining and/or inputting the setpoint value.