Drive control and features
36
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 disabled by parameter
.
The user can select by a parameter (
) how the drive
reacts to a control panel or PC tool communication break.
External control
When the drive is in external control, control commands (start/stop, reset etc.) are
given through the fieldbus interface (via an optional fieldbus adapter module), the I/O
terminals (digital inputs), optional I/O extension modules or the drive-to-drive link.
Two external control locations, EXT1 and EXT2, are available. The user can select
control signals (eg,
) and control modes (
) for both external control locations. Depending on the user selection, either
EXT1 or EXT2 is active at a time. Selection between EXT1/EXT2 is done via a freely
selectable bit pointer parameter
. In addition, the EXT1
control location is divided into two parts, EXT1 CTRL MODE1 and EXT1 CTRL
MODE2. Both use the EXT1 control signals for start/stop, but the control mode can
be different; for example, EXT1 CTRL MODE2 can be used in homing.
Operating modes of the drive
The drive can operate in speed and torque control modes as well as position,
synchron, homing and profile velocity modes. Block diagrams of the control chain for
speed and torque control as well as positioning are presented on page
; more
detailed diagrams are presented in
Appendix E – Control chain and drive logic
(page
).
Speed control mode
Motor rotates at a speed proportional to the speed reference given to the drive. This
mode can be used either with estimated speed used as feedback, or with an
encoder or resolver for better speed accuracy.
Speed control mode is available in both local and external control.
Torque control mode
Motor torque is proportional to the torque reference given to the drive. This mode
can be used either with estimated speed used as feedback, or with an encoder or
resolver for more accurate and dynamic motor control.
Torque control mode is available in both local and external control.
Summary of Contents for ACSM1 Series
Page 1: ...ABB motion control drives Firmware manual ACSM1 motion control program ...
Page 4: ......
Page 34: ...Drive programming using PC tools 34 ...
Page 86: ...Drive control and features 86 ...
Page 265: ...Parameters and firmware blocks 265 1 100 us 100 µs 2 1 ms 1 ms 3 50 ms 50 ms ...
Page 302: ...Parameter data 302 ...
Page 422: ...Application program template 422 ...
Page 430: ...Appendix A Fieldbus control 430 ...
Page 500: ...Appendix D Application examples 500 ...
Page 508: ...Appendix E Control chain and drive logic diagrams 508 ...
Page 510: ...3AFE68848270 REV H EN 2015 06 26 Contact us www abb com drives www abb com drivespartners ...