34 Program features
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 ACS860 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-01based drive using fiber
optic cables is shown below.
Drives with a
control unit require an additional FDCO DDCS communication
control unit require an FDCO-04 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
); 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.
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
Communication
The communication between the controller and the drive consists of data sets of three
16-bit words each. The controller sends a data set to the drive, which returns the next
data set to the controller.
T = Transmitter; R = Receiver
ACS860
(BCU) Control unit
RDCO
CH0
Controller
R
T
R
T
ACS860
(ZCU) Control unit
FDCO
R
T
Summary of Contents for ACS860
Page 1: ... ABB INDUSTRIAL DRIVES ACS860 primary control program Firmware manual ...
Page 4: ......
Page 10: ...10 Table of contents ...
Page 18: ...18 Using the control panel ...
Page 24: ...24 Control locations and operating modes ...
Page 54: ...54 Program features ...
Page 78: ...78 Program features ...
Page 90: ...90 Application macros ...
Page 342: ...342 Additional parameter data ...
Page 380: ...380 Fault tracing ...
Page 381: ...Fault tracing 381 ...
Page 382: ...382 Fault tracing ...
Page 436: ...436 Control chain diagrams ...