7 7.1 7.1.2 DC-bus operation Introduction Comparison single-axis controllers / multi-axis controllers 7.1.2 Comparison single-axis controllers / multi-axis controllers In the power range the ”Single Drive, E94A S … ” and ”Multi Drive, E94A M … ” are available as controllers of the 9400 servo drives series. Thesingle-axiscontrollers(”SingleDrive”)aredesignedforconnectiontoAC mains (3/PE AC). They are equipped with mains rectifiers, mains filters and brake choppers. The multi-axis controllers (”Multi Drive”) are exclusively designed for connection to DC mains (2/PE DC). They are equipped with DC busbars for easy assembly.
In DC-bus connections, DC-supply modules are used that contain mains rectifiers and brake choppers. Mains filters must be specially dimensioned for each DC-bus. Tab. 7.1-1 Single Drive/Multi Drive 7.1-2 EDS94SPP101 EN 3.1-04/2007 E94AS... E94AM... AC 3 ~ = = ~ 3 M AR principle DC 2 = ~ 3 M AR principle = ~