VLT
®
5000 INTERBUS
MG.10.O1.02 VLT is a registered Danfoss trademark
15
Drivecom State machine
The state machine describes the device status and
the possible control sequence of the drive. A status
represents a specific internal and external response.
By means of device control commands and/or
internal events, the status can be changed and a
control sequence thus executed. The current status
can be read out by way of the VLT®5000 status word.
In the flowchart to the right, this explanation may help
you understanding the
drawing: to change from
state A to state B, the condition Controlword bit 1
has to be set equal to 0. The coarses the
transition 0 to be exequted. In state B the
statusword is equal to xx01
H
.
Drivecom
21
Profile.
Not ready to switch on
S T W = x x 0 0 h
Switched on
0
1
2
1 1
7
3
4
5
6
9
8
1 2
1 0
S T W = x x 3 3 h
Disable Voltage
xxxx xx0x or
Qiuck stop
xxxx x01x
Shutdown
xxxx x110
Disable Voltage
xxxx xx0x
Switch on
xxxx x111
Stop
xxxx x110
Enable
operation
xxxx 1111
Disable
operation
xxxx x01x
Shutdown
xxxx x110
Qiuck stop
xxxx x01x
Disable voltage
xxxx xx0x
Disable voltage
xxxx xx0x or
Quick stop
xxxx x01x
Reset malfunction
0xxx xxxx
1xxx xxxx
↓
Operation enabled
S T W = x x 3 7 h
E n a b l e d R a m p
S T W = x x 3 7 h
No Freeze
S T W = x x 3 7 h
Start
S T W = x x 3 7 h
Quick stop active
S T W = x x 1 7 h
1 3
1 4
1 5
S T W = x x 3 8 h
STW = xxxx xxxx x1xx 1xxx
J O G 1
S T W = x x 3 7 h
Malfunction reaction
active
Malfunction
Ready to switch on
S T W = x x 3 1 h
Switch on disabled
S T W = x x 4 0 h
P o w e r o n
Drivecom 21
Danfoss specific
State B
S T W = x x 0 1 h
0
State A
condition
xxxx xx0x
transition 0
