ABB ACS880 - Page 6

33Programmable relay outputs ........................................................................
33Settings and diagnostics ...................................................................
33Programmable I/O extensions .....................................................................
34Settings and diagnostics ...................................................................
34Fieldbus control ............................................................................................
34Settings and diagnostics ...................................................................
34Master/follower functionality .........................................................................
34General .............................................................................................
36Load share function with a speed-controlled follower .......................
36Communication .................................................................................
38Construction of the master/follower link ............................................
40Example parameter settings .............................................................
41Specifications of the fiber optic master/follower link .........................
42Settings and diagnostics ...................................................................
42External controller interface .........................................................................
42General .............................................................................................
42Topology ...........................................................................................
44Communication .................................................................................
45Control of a supply unit (LSU) ......................................................................
45General .............................................................................................
45Communication .................................................................................
46Settings and diagnostics ...................................................................
46Motor control .......................................................................................................
46Direct torque control (DTC) ..........................................................................
46Settings and diagnostics ...................................................................
47Reference ramping ......................................................................................
47Special acceleration/deceleration ramps ..........................................
47Settings and diagnostics ...................................................................
48Constant speeds/frequencies ......................................................................
48Settings and diagnostics ...................................................................
48Critical speeds/frequencies ..........................................................................
48Example ............................................................................................
49Settings and diagnostics ...................................................................
49Speed controller autotune ............................................................................
50Before activating the autotune routine ..............................................
51Autotune modes ................................................................................
51Autotune results ................................................................................
52Warning indications ..........................................................................
52Settings and diagnostics ...................................................................
52Oscillation damping ......................................................................................
53Tuning procedure for oscillation damping .........................................
53Settings and diagnostics ...................................................................
53Resonance frequency elimination ................................................................
53Settings and diagnostics ...................................................................
6 Table of contents