ABB ACS880 - Page 239

Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
Speed / uint16Selects the operating mode for external control location
EXT1.
Ext1 control mode19.12
1None.Zero
2
Speed control. The torque reference used is 25.1 Torque
reference speed control (output of the speed reference
chain).
Speed
3
Torque control. The torque reference used is 26.74 Torque
ref ramp out (output of the torque reference chain).
Torque
4
Combination of selections Speed and Torque: the torque
selector compares the speed controller output (25.1 Torque
reference speed control) and the torque reference (26.74
Torque ref ramp out) and selects the smaller of the two.
If speed error becomes negative, the drive follows the
speed controller output until speed error becomes positive
again.
This prevents the drive from accelerating uncontrollably if
the load is lost in torque control.
Minimum
5
Combination of selections Speed and Torque: the torque
selector compares the speed controller output (25.1 Torque
reference speed control) and the torque reference (26.74
Torque ref ramp out) and selects the greater of the two.
If speed error becomes positive, the drive follows the speed
controller output until speed error becomes negative again.
This prevents the drive from accelerating uncontrollably if
the load is lost in torque control.
Maximum
6
Combination of selections Speed and Torque: Torque
selector adds the speed reference chain output to the
torque reference chain output.
Add
7(Type BCU control units only) DC voltage control. The
torque reference used is 29.1 Torque ref DC voltage control
(output of the DC voltage reference chain).
Voltage
Speed / uint16Selects the operating mode for external control location
EXT2.
For the selections, see parameter 19.12 Ext1 control mode.
Ext2 control mode19.14
Speed / uint16Selects the operating mode for local control.Local control mode19.16
0
Speed control. The torque reference used is 25.1 Torque
reference speed control (output of the speed reference
chain).
Speed
1
Torque control. The torque reference used is 26.74 Torque
ref ramp out (output of the torque reference chain).
Torque
No / uint16Enables/disables local control (start and stop buttons on
the control panel, and the local controls on the PC tool).
WARNING!
Before disabling local control, ensure that the
control panel is not needed for stopping the drive.
Local control disable19.17
0Local control enabled.No
Parameters 239