20 Communication to SPRS
IGBT supply units with a ZCU control unit require an additional FDCO DDCS
communication module; IGBT supply units with a BCU control unit require RDCO or
FDCO module. The BCU has a dedicated slot for the RDCO – FDCO module can
also be used with a BCU control unit but it will reserve one of the three universal
option module slots. Ring and star configurations are also possible much in the same
way as with the master/follower link; the notable difference is that the external
controller connects to channel CH0 on the RDCO module instead of CH2. The
channel on the FDCO communication module can be freely selected.
Communication
The communication between the controller and the IGBT supply unit consists of data
sets of three 16-bit words each. The controller sends a data set to the IGBT supply
unit, which returns the next data set to the controller.
The communication uses data sets 10…33. The contents of the data sets are freely
configurable, but data set 10 typically contains the control word, while data set 11
returns the status word and selected actual values.
T = Transmitter; R = Receiver
ACS880
(BCU) Control unit
RDCO
CH0
Controller
RT
RT
ACS880
(ZCU) Control unit
FDCO
RT
To Next Page
Loading...
