ABB ACS355 series User Manual page 332

332 Fieldbus control with embedded fieldbus
State diagram
The state diagram below describes the start-stop function of Control word (CW) and
Status word (SW) bits for the ABB drives profile.
From any state
Emergency Stop
OFF3 (CW Bit2=0)
(SW Bit5=0)
n(f)=0 / I=0
From any state
OFF1 (CW Bit0=0)
(SW Bit1=0)
n(f)=0 / I=0
State
State change
Path described in example
CW = Control word
SW = Status word
RFG = Ramp function generator
I = Par. 0104 CURRENT
f = Par. 0103 OUTPUT FREQ
n = Speed
* Supported only by
profile.
** State transition also occurs if the fault
is reset from any other source (eg,
digital input).
From any state
OFF3
OFF2
ACTIVE
ACTIVE
INPUT POWER OFF
OFF1
ACTIVE
Power ON
A
(CW Bit3 =0)
OPERATION
(SW Bit2 =0)
INHIBITED
OPERATION INHIBITED
(CW Bit4=0)*
(CW Bit5=0)
(CW Bit6=0)
ABB DRV FULL
From any state
Emergency Off
OFF2 (CW Bit 1=0)
(SW Bit 4=0)
SWITCH-ON
INHIBITED
B* C D
NOT READY
TO SWITCH ON
READY TO
SWITCH ON
B* C* D*
READY TO
OPERATE
OPERATION
C D
ENABLED
A
RFG OUTPUT
ENABLED*
D
B*
RFG: ACCELERATOR
ENABLED
C
OPERATING
D
Fault
(SW Bit3=1)
FAULT
(CW Bit7=1)**
(SW Bit6=1)
(CW Bit0=0)
(SW Bit0=0)
(CW xxxx x1*xx xxxx x110)
(SW Bit0=1)
(CW= xxxx x1*xx xxxx x111)
(SW Bit1=1)
(CW Bit3=1 and
SW Bit12=1)
(SW Bit2=1)
(CW=xxxx x1*xx xxx1* 1111,
ie, Bit4=1)*
(CW=xxxx x1*xx xx11* 1111,
ie, Bit5=1)
(CW=xxxx x1*xx x111* 1111,
ie, Bit6=1)
(SW Bit8=1)