Program features
108
External speed correction
When the Synchro function is not used, you can use External speed correction.
Parameter
SPD CORR PTR defines the correction by writing it to signal
SPEED CORR BUFF. This speed correction bypasses internal ramps. The speed
correction value is added to the speed controller.
Example:
To make an external device control the follower speed reference, for
example, through analogue input AI3, connect it to be the source for the reference:
SPD CORR PTR = 09.03.00 (
The figure below illustrates the operation of the function.
Settings
Parameter
Homing
Position error
calculation
(mm)
Synchron.
Enable
Speed
controller
loop
ADD
Speed
correction
factor (rpm)
Position
error limiter
(mm)
Position
error for
correction
(mm)
Actual
position
calculation
(mm)
Encoder
pulses
Master
position
SPD CORR PTR
SPEED CORR BUF
POS ERROR
SYNCRO CONTROL
POS SCALE
POS
ACT PPU
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 ...