Rockwell Automation SA3000 High Power Modules - Manual (Page 59)

SA3000 Internal DC Bus Control B-3
Figure B.2 – Internal DC Bus Control State Diagram
Idle
Wait for Bus to
Charge
Nominal Bus
Voltage
Reached?
Open Pre-Charge
Contactor
Auxiliary
Contacts
Closed?
PMI Sets
BUS_RDY@
Bus Charged
PMI Closes
Pre-Charge
Contactor
More than 10
Seconds
Elapsed?
Fault Occurs
Register 202/1202
More than 10
Seconds
Elapsed?
Open Pre-Charge
Contactor
Fault
Occurs?
No
BUS_ENA@ On
Begin 10 Second Timer
(2)
(2)
(2)
(2)
(2)
(2)
1. BUS_ENA@ must transistion from off to on to start the bus charging process.
2. BUS_ENA@ must remain on during the drive operation
No
No Yes
Yes
Yes
Yes
Yes
No
(1)