Program features 31
Master/follower functionality
General
The master/follower functionality can be used to link several drives together so that
the load can be evenly distributed between the drives. This is ideal in applications
where the motors are coupled to each other via gearing, chain, belt, etc.
The external control signals are typically connected to one drive only which acts as
the master. The master controls up to 10 followers by sending broadcast messages
over an electrical cable or fiber optic link. The master can read feedback signals from
up to 3 selected followers.
(For example)
Control word
Speed reference
Torque reference
(For example)
Status word
Master
M
~
M
~
Master/follower link
DD
CS
Follower
DD
CS
Fieldbus control
External control system (eg. PLC)
Process master
Process follower
Speed-controlled
master
Torque- or speed-
controlled follower
Summary of Contents for ACS880-x04
Page 1: ... ABB INDUSTRIAL DRIVES ACS880 primary control program Firmware manual ...
Page 4: ......
Page 18: ...18 Using the control panel ...
Page 24: ...24 Control locations and operating modes ...
Page 112: ...112 Application macros ...
Page 496: ...496 Additional parameter data ...
Page 544: ...544 Fault tracing ...
Page 602: ...602 Control chain diagrams ...