ABB ACS880 Firmware Manual page 439

No. Name/Value
78.31 Trim mode control
Bit Name
0 Automatic
1 Trim multiplier 78.32
2 Diameter ratio boost
3 Diameter ratio fade
4 Line speed % proportional
5 Line speed % inverse
6 Motor speed % proportional 1 = Trim is proportional to motor speed actual
7 Motor speed % inverse
8...9 Reserved
10 Proportional to 78.33 User
trim source
11 Reserved
12...15 Not used
0b0000... 0b111111
78.32 Trim multiplier
-32767.0000...
32767.0000
78.33 User trim source
NULL
AI1_SCALED
AI2_SCALED
Description
Defines specific trimming settings used by the PID controller.
The resulting trim value displayed in parameter
factor used is the product of all currently enabled trims. The
product of this value and value in parameter
output limited forms the final control signal produced by the
PID controller (parameter
is then used to trim either torque (par. 09.36) or speed (par.
09.37) depending on the active tension control mode
(parameter 09.03 Actual tension ctrl
Description
1 = Diameter related output trim is set automatically based on
parameter 77.02 Tension control
0 = Diameter related output trim is defined manually with bit 2
and 3.
1 = Take Trim multiplier in use (can be used in combination
with other trims)
0 = Trim constant multiplier is not in use
1 = Trim grows with actual diameter growing
0 = Diameter ratio not in use
1 = Trim fades with actual diameter growing
0 = Diameter ratio not in use
1 = Trim is proportional to line speed reference
0 = Line speed ratio not in use
1 = Trim is inversely proportional to line speed reference
0 = Inversed line speed ratio is not in use
0 = Motor speed ratio is not in use
1 = Trim is inversely proportional to motor speed actual
0 = Inversed motor speed ratio is not in use
1 = Trim is defined with parameter
0 = User trim source is not in use
Trim mode control word.
Defines a constant multiplier used to trim PI output.
Note: This parameter is active only if parameter
mode control, mask bit 1 = True.
Trim multiplier.
Defines the source for a custom trim input.
Note: This parameter is active only if parameter
mode control, mask bit 10 = True.
Zero.
12.12 AI1 scaled value (see page 197).
12.22 AI2 scaled value (see page 198).
78.75 Trim
78.69 PID
78.79 PID output trimmed) which
mode).
mode.
78.33 User trim source
78.31 Trim
78.31 Trim
Parameters 439
Def/FbEq16
0b0110
1 = 1
1.0000
10000 = 1
NULL
0
1
2