■
External controller interface
General
The drive can be connected to an external controller (such as the ABB AC 800M)
using either fiber optic or twisted-pair cable. The ACS880 is compatible with both
the ModuleBus and DriveBus connections. Note that some features of DriveBus
(such as BusManager) are not supported.
Topology
An example connection with either a ZCU-based or BCU-based drive using fiber
optic cables is shown below.
Drives with a ZCU control unit require an additional FDCO DDCS communication
module; drives with a BCU control unit require an RDCO or FDCO module. The BCU
has a dedicated slot for the RDCO – an 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 (see section
Master/follower functionality (page 66)
); 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.
R
T
R
T
R
T
Controller
ACS880
ACS880
(ZCU) Control unit
(BCU) Control unit
FDCO
RDCO
CH0
T = Transmitter, R = Receiver
The external controller can also be wired to the D2D (RS-485) connector using
shielded, twisted-pair cable. The selection of the connection is made by parameter
.
The transfer rate can be selected by parameter
74 Program features
Содержание ACS880 N5700 Series
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