ABB ACS880 Series, Firmware Manual

Page: 277 / 764

Def / Type
FbEq 16b / 32b Description Name / Range /
Selection No.
32 Control word bit 11 received through the embedded
fieldbus interface. EFB MCW bit 11
See Terms and abbreviations (page 169) . Other [bit]
Speed / uint16 Selects the operating mode for external control location
EXT1. Ext1 control mode 19.12
1 None. 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 / uint16 Selects the operating mode for external control location
EXT2.
For the selections, see parameter
19.12 Ext1 control
mode .
Ext2 control mode 19.14
Speed / uint16 Selects the operating mode for local control. Local control mode 19.16
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
Parameters 277