Control units of the drive 1317Control units of the driveWhat this chapter containsThis chapter• describes the connections of the control units used in the drive,• contains the specifications of the inputs and outputs of the control units.GeneralThe ACS880 drive utilizes BCU-x2 control units. The BCU-x2 consists of a BCON-12control board (and a BIOC-01 I/O connector board and power supply board) built in ametal housing.The supply and inverter units of the ACS880-37 are each controlled by a dedicatedBCU-x2 control unit. The designation of the supply control unit is A51; the inverter controlunit is A41. Both are located in the ACU cubicle (see the drawings in chapter Operationprinciple and hardware description), and connect to the power modules (ie. supply andinverter modules respectively) by fiber optic cables.In this manual, the name “BCU-x2” represents the control unit types BCU-02 and BCU-12.These have a different number of power module connections (2 and 7 respectively) but areotherwise similar.
