ABB ACS880 Firmware Manual page 430

430 Parameters
No. Name/Value
77.02 Tension control
mode
Open loop
Tension torque trim
Tension speed trim
Dancer speed trim
Line speed master
77.03 Tension reference
Src
NULL
AI1_SCALED
AI2_SCALED
FBA Reference 1
FBA Reference 2
M/F or D2D
Reference 1
M/F or D2D
Reference 2
EFB Reference 1
EFB Reference 2
Motor
Potentiometer Ref
77.05 Maximum
Tension
Other
Description
Selects the used tension control mode.
Open loop tension control without any feedback device.
Tension control with torque reference trim based on load cell
feedback.
The control program controls the web tension by calculating
the torque reference of the motor, which is the product of
user-given tension reference and actual roll radius. In
addition, the tension control PID modifies the final motor
torque reference based on the tension feedback from the
load cell.
Tension control with speed reference trim based on load cell
feedback.
In addition, the tension control PID modifies the final motor
speed reference based on the tension feedback from the
load cell.
Dancer control with speed reference trim based on Dancer
position feedback.
The dancer absorbs the changes of the web tension, which
causes the dancer position to change.
Line surface speed control mode with motor speed
reference trim based on the line speed feedback from an
encoder.
Selects the source of the tension reference.
Tension reference scaling is then done with parameter
Tension reference scaling. Target tension reference is then
defined as:
77.51 Tension reference In
77.06 Tension reference
Zero.
12.12 AI1 scaled value (see page 197).
12.22 AI2 scaled value (see page 198).
03.05 FB A reference 1
03.06 FB A reference 2
03.13 M/F or D2D ref1 (see page 160).
03.14 M/F or D2D ref2 (see page 161).
03.09 EFB reference 1 (see page 160).
03.10 EFB reference 2 (see page 160).
Motor potentiometer reference. See parameter
potentiometer ref act on page 256.
Value from parameter 77.05 Max tension
directly without scaling, when parameter
reference scaling = 0
Source selection (see Terms and abbreviations
152).
= (77.03 Tension reference Src
scaling) x 77.05 Max tension.
(see page 160).
(see page 160).
22.80 Motor
is interpreted
77.06 Tension
Def/FbEq16
Open loop
0
1
2
3
4
AI2_SCALE
D
77.06
/
0
1
2
3
4
5
6
7
8
9
10
on page -