State Transition Diagram - ABB ACS880 Firmware Manual

550 Fieldbus control through the embedded fieldbus interface (EFB)
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State transition diagram

The diagram below shows the state transitions in the drive when the drive is using the
ABB Drives profile, and configured to follow the commands of the control word from
the embedded fieldbus interface. The upper case texts refer to the states which are
used in the tables representing the fieldbus Control and Status words. See sections
Control Word on page
MAINS OFF
Power ON
A B C D
(CW Bit3=0)
OPERATION
INHIBITED
(SW Bit2=0)
operation
inhibited
from any state
OFF1 (CW Bit0=0)
OFF1
ACTIVE
(SW Bit1=0)
n(f)=0 / I=0
B C D
(CW Bit4=0)
C D
(CW Bit5=0)
(CW Bit6=0)
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547 and Status Word
SWITCH-ON
INHIBITED
(CW Bit0=0)
NOT READY TO
SWITCH ON
(CW=xxxx x1xx xxxx x110)
READY TO
SWITCH ON
(CW=xxxx x1xx xxxx x111)
READY TO
OPERATE
(CW=xxxx x1xx xxxx 1111
and SW Bit12=1)
from any state
(CW Bit3=1
and
SW Bit12=1)
OPERATION
ENABLED
A
(CW=xxxx x1xx xxx1 1111)
RFG: OUTPUT
D
ENABLED
B
(CW=xxxx x1xx xx11 1111)
RFG: ACCELERATOR
ENABLED
C
(CW=xxxx x1xx x111 1111)
OPERATION
D
on page 549.
ABB Drives profile
(SW Bit6=1)
CW = Control Word
(SW Bit0=0)
SW = Status Word
RFG = Ramp Function
(SW Bit0=1)
from any state
FAULT
(SW Bit1=1)
from any state
Emergency Stop
OFF3 (CW Bit2=0)
OFF3 OFF2
ACTIVE ACTIVE
(SW Bit5=0)
n(f)=0 / I=0
(SW Bit2=1)
(SW Bit8=1)
n = Speed
I = Input Current
Generator
f = Frequency
Fault
(SW Bit3=1)
(CW Bit7=1)
Emergency OFF
OFF2 (CW Bit1=0)
(SW Bit4=0)
STATE
condition
rising edge