ABB ACH550-UH User Manual page 258

1-254
State Diagram
ABB drives profile
To illustrate the operation of the state diagram, the following example (
implementation of the ABB Drives profile) uses the control word to start the drive:
• First, the requirements for using the
• When the power is first connected, the state of the drive is not ready to switch on.
See dotted lined path (
• Use the
OPERATING
given reference. See table below.
Step
1
2
3
4
5
6
Embedded fieldbus
to step through the state machine states until the
CONTROL WORD
state is reached, meaning that the drive is running and follows the
CONTROL WORD Value
CW = 0000 0000 0000 0110
bit 15 bit 0
CW = 0000 0000 0000 0111
CW = 0000 0000 0000 1111
CW = 0000 0000 0010 1111
CW = 0000 0000 0110 1111
CONTROL WORD
) in the state diagram below.
This CW value changes the drive state to
.
ON
Wait at least 100 ms before proceeding.
This CW value changes the drive state to
This CW value changes the drive state to
The drive starts, but will not accelerate.
This CW value releases the ramp function generator (RFG)
output, and changes the drive state to
.
ENABLED
This CW value releases the ramp function generator (RFG)
output, and changes the drive state to
accelerates to the given reference and follows the reference.
ACH550-UH User's Manual
ABB DRV LIM
must be met. See above.
Description
READY TO SWITCH
READY TO OPERATE
OPERATION ENABLED
:
RFG ACCELERATOR
. The drive
OPERATING
.
.