ABB ACS550-02 User Manual page 163

The state diagram below describes the start-stop function of
and (SW) bits.
STATUS WORD
From any state
Emergency Stop
OFF3 (CW Bit2=0)
OFF3
(SW Bit5=0)
ACTIVE
f=0 / I=0
From any state
OFF1 (CW Bit0=0)
f=0 / I=0
(SW Bit2=0)
KEY
State
CW =
CONTROL WORD
SW =
STATUS WORD
Path described in example
I = Param. 0104
CURRENT
f = Param. 0103
OUTPUT FREQ
RFG = Ramp Function Generator
* This state transition also occurs if the fault is reset from any other source (e.g. digital input).
From any state
Emergency Off
OFF2 (CW Bit1=0)
OFF2
(SW Bit4=0)
ACTIVE
MAINS OFF
Power ON
A C D
(CW Bit3=0)
OPERATION
INHIBITED
C D
(CW Bit5=0)
D
(CW Bit6=0)
CONTROL WORD
From any state
Fault
(SW Bit3=1)
FAULT
(CW Bit7=1)*
SWITCH-ON
(SW Bit6=1)
INHIBITED
(CW Bit0=0)
NOT READY
TO SWITCH ON
(CW xxxx xxxx xxxx x110)
READY TO
SWITCH ON
(CW xxxx xxxx xxxx x111)
READY TO
OPERATE
(CW Bit3=1 and
SW Bit12=1)
OPERATION
ENABLED
A
(CW Bit5=1)
RFG: ACCELERATOR
ENABLED
C
(CW Bit6=1)
(SW Bit8=1)
OPERATING
D
161
(CW)
(SW Bit0=0)
(SW Bit0=1)
(SW Bit1=1)
(SW Bit2=1)
Start-Up