ABB ACS350 Series, User Manual

Page: 189 / 314

Actual signals and parameters
189
DI2 See selection DI1. 2
DI3 See selection DI1. 3
DI4 See selection DI1. 4
DI5 See selection DI1. 5
COMM Fieldbus interface as the source for forcing ramp input to zero, i.e. control
word
0301 FB CMD WORD 1 bit 13 (with ABB drives profile 5319 EFB PAR
19 bit 6). The control word is sent by the fieldbus controller via the fieldbus
adapter or embedded fieldbus (modbus) to the drive. For the control word
bits, see sections
DCU communication profile on page 262 and ABB Drives
communication profile on page 258 .
7
DI1(INV) Inverted digital input DI1.0 = ramp input is forced to zero. Ramp output will
ramp to zero according to the used ramp time. -1
DI2(INV) See selection DI1(INV). -2
DI3(INV) See selection DI1(INV). -3
DI4(INV) See selection DI1(INV). -4
DI5(INV) See selection DI1(INV). -5
23 SPEED CONTROL Speed controller variables. See section Speed controller tuning on page 115 .
2301 PROP GAIN Defines a relative gain for the speed controller. Great gain may cause speed
oscillation.
The figure below shows the speed controller output after an error step when
the error remains constant.
Note: For automatic setting of the gain, use autotune run (parameter 2305
AUTOTUNE RUN).
10
0.00…200.00 Gain 1 = 0.01
Parameters – complete descriptions
Index Name/Selection Description Def, FbEq
Gain = K
p
= 1
T
I
= Integration time = 0
T
D
= Derivation time = 0
Controller
Error value
Controller output
t
%
e = Error value
output =
K
p
· e