Program features
55
External control
When the drive is in external control, the commands are given through standard I/O
terminals (digital and analogue inputs), optional I/O extension modules and/or the
fieldbus interface. In addition, it is also possible to set the control panel as the source
for the external control.
External control is indicated by a blank on the panel display or with an R in those
special cases when the panel is defined as a source for the external control.
You can connect the control signals to two external control locations, EXT1 or EXT2.
Depending on the selection, either one is active at a time. This function operates on
a 20 ms time level.
The figure below illustrates the use of the external control locations.
External control through the Input/
Output terminals, or through the
fieldbus interfaces
1 R ->1242 rpm I
1 ->1242 rpm I
External control by control panel
EXT1
Stand-alone mode
Homing
EXT2
Master/Follower
Synchro control
EXT1 STRT/STP/DIR
EXT REF1 SELECT
EXT2 STRT/STP/DIR
EXT REF2 SELECT
EXT1/EXT2 SELECT
CH2
Summary of Contents for ACS 800 Series
Page 1: ...ACS800 Firmware Manual Crane Control Program N697 ...
Page 4: ......
Page 26: ...Start up and control through the I O interface 26 ...
Page 36: ...Quick start up guide 36 ...
Page 52: ...Control panel 52 ...
Page 105: ...Program features 105 Figure Control diagram for Shaft synchronisation executed in 20 ms ...
Page 128: ...Program features 128 ...
Page 150: ...Application macros control location EXT1 EXT2 150 ...
Page 228: ...Actual signals and parameters 228 ...
Page 299: ...Adaptive Programming examples for crane control 299 ...
Page 305: ...Adaptive Programming examples for crane control 305 ...
Page 318: ...Analogue Extension Module 318 ...
Page 332: ...Additional data actual signals and parameters 332 ...
Page 334: ...DriveWindow 334 ...
Page 335: ...Control block diagrams 335 Control block diagrams ...
Page 336: ...Control block diagrams 336 ...
Page 337: ...Control block diagrams 337 ...
Page 338: ...Control block diagrams 338 ...
Page 340: ...www abb com drives www abb com drivespartners Contact us 3AFE68775230 Rev E EN 2012 09 25 ...