ABB ACS880 Series, Supplement Manual

Page: 27 / 50

Decanter program features 23
78.14 Torque reference
78.15 Torque gain
78.16 Torque integration time
78.19 Torque to delta speed
See also Decanter control chain diagram of Scroll drive on page 24 .

Direct torque compensation
The operating principle of the direct torque compensation is based on actual torque
compensation of the Scroll drive. The control is activated by setting the gain greater than
zero. The control is active with all actual torque values. Direct torque compensation can be
adjusted with separate integrator and gain. Use the Torque window control scaling.
Differential speed control
Differential or delta speed control calculates the speed difference between the Bowl and
Scroll drive.
See parameters:
•
78.03 Delta speed start/stop
•
78.04 Delta speed function
•
78.05 Delta speed ref selection
•
78.06 Delta speed reference
•
78.20 Delta speed min limit
•
78.21 Delta speed max limit