ABB ACS 800 Series, Firmware Manual

Page: 95 / 340

Program features
95
The following figure illustrates data transmission in a Master/Follower application.
Note: Only the ring topology is supported.
For more information on the requirements for a redundant crane control application
between Master, Followers and spare units, see section
Redundancy in Master/
Follower crane control on page 304 .
Data set 41 is used for transmission of data from Master to Follower as follows. Data
set 41 is updated on 6 ms.
• If the Master is in EXT2 and parameter 60.11 SLAVE MODE is TORQUE, then
signal 03.11 FOLLOWER MCW is transferred using data set word 41.1. Signal
02.02 SPEED REF 3 is transferred using data set word 41.2 and signal 02.13
TORQ USED REF is transferred using data set word 41.3
• If the Master is in EXT2 and parameter 60.11 SLAVE MODE is SPEED and
parameter 78.01 SYNCHRO CONTROL is ON, then signal 03.37 FLW CMD
WITH POS is transferred using data set word 41.1. Signal 03.38 POSITION REM
is transferred using data set word 41.2 and signal 02.02 SPEED REF 3 is
transferred using data set word 41.3.
• If the Master is in EXT2 and parameter 60.11 SLAVE MODE is SPEED and
parameter 78.01 SYNCHRO CONTROL is OFF, then signal 03.11 FOLLOWER
MCW is transferred using data set word 41.1. Signal 02.02 SPEED REF 3 is
transferred using data set word 41.2 and signal 02.02 SPEED REF 3 is
transferred using data set word 41.3.
ACS800
Follower
ACS800
Follower
ACS800
RMIO-XX
V18 V1
7
CH2
R T
Master
V18 V1
7
CH2
R T
V18 V1
7
CH2
R T
RDCO-0X
RMIO-XX
RDCO-0X
RMIOXX
RDCO-0X
T = Transmitter; R = Receiver; RMIO = I/O and Control Board
Please note that channels CH0/CH2/CH3 are located on the optional RDCO-0x board.
*) *)
*)
*) External 24 V to the RMIO board, support fast start-up and avoid communication error between
drives.