ABB ACH580 Series User Manual page 162

ACH580 E-Clipse bypass and packaged drive user manual
State Diagram
ABB drives profile
To illustrate the operation of the state diagram, the following example (ABB DRV LIM
implementation of the ABB Drives profile) uses the control word to start the system:
• First, the requirements for using the CONTROL WORD must be met.
• When the power is first connected, the state of the bypass 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
to step through the state machine states until the
CONTROL WORD
state is reached, meaning that the bypass 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
) in the state diagram below.
Description
This CW value changes the bypass state to READY TO
SWITCH ON.
Wait at least 100 ms before proceeding.
This CW value changes the bypass state to READY TO
OPERATE.
This CW value changes the bypass state to OPERATION
ENABLED. The drive starts, but will not accelerate.
This CW value releases the ramp function generator (RFG)
output, and changes the drive state to RFG: ACCELERATOR
ENABLED.
This CW value releases the ramp function generator (RFG)
output, and changes the bypass state to OPERATING. The
bypass accelerates to the given reference and follows the
reference.
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Embedded fieldbus