Program features
85
External speed limitation
The External speed limitation function limits the speed reference to a predefined
value when an external speed limit signal is activated. You can define the speed
limits in parameters
MAX EXT LIM SPD and
MIN EXT LIM SPD, while
the external speed limit signal has to be configured in parameter
LIM PTR. The speed limit signal is a pointer parameter, and hence, it can be
configured to a DI, PLC DI using fieldbus communication or to any other signal bits.
When the speed limit signal is activated, the drive speed reference is limited to
MAX EXT LIM SPD if the motor is running in the forward direction or to
EXT LIM SPD if the motor is running in the reverse direction. The limitation status
can be monitored using bits
bit 10 for
maximum external speed limit and
bit 11 for
minimum external speed limit.
Settings
Diagnostics
Parameter
Additional information
Configuring the external speed limit signal
Configuring the maximum external speed limit
Configuring the minimum external speed limit
Actual signal
Additional information
bit 10
Maximum speed limited with activation of external speed signal
bit 11
Minimum speed limited with activation of external speed signal
IN
0
11.08
SPEED
LIMITER
IN
0
MAX EXT
LIM SPD
MIN EXT
LIM SPD
SPEED
LIMITER
EXT 1 MIN
EXT 1 MAX
EXT 2 MIN
EXT 2 MAX
SPEED
REF IN
EXT1/EXT2
SPEED REF
EXT SPEED
LIMIT REF
EXT SPD LIM PTR
10.20
11.07
11.05
11.04
20.23
20.22
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 ...