ABB ACS860, Firmware Manual

Page: 20 / 438

20 Control locations and operating modes
Local control vs. external control
The ACS860 has two main control locations: external and local. The control location
is selected with the Loc/Rem key on the control panel or in the PC tool.

Local control
The control commands are given from the control panel keypad or from a PC
equipped with Drive composer when the drive is set to local control. Speed and
torque control modes are available for local control; frequency mode is available
when scalar motor control mode is used (see parameter
19.16 Local control mode ).
Local control is mainly used during commissioning and maintenance. The control
panel always overrides the external control signal sources when used in local control.
Changing the control location to local can be prevented by parameter
19.17 Local
control disable .
The user can select by a parameter ( 49.05 Communication loss action ) how the drive
reacts to a control panel or PC tool communication break. (The parameter has no
effect in external control.)
Control panel or Drive
composer PC tool (optional)
Fieldbus adapter (Fxxx)
or DDCS communication
module
1) Encoder or resolver interface module(s) (FEN-xx) installed in drive slot 1.
MOTOR
PLC
M
3~
Embedded fieldbus
interface (EFB) or
master/follower link
External control
Local control
Encoder
1)
ACS860
Control panel