Rockwell Automation SA3100 Diag,Troublesht,Startup,Guide - Manual (Page 25)

PMI Regulator Operating Modes 3-3
Figure 3.2 – Internal DC Bus Control Flowchart
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
Wait for AC Line
AC Line Status
From Power Module
= TRUE
More than 10
Seconds
Elapsed?
Yes
No
Common
Bus or Hi HP
Stand-Alone
?
Yes
Hi HP
Stand-Alone
?
BUS_ENA@ On*
Begin 10 Second
Timer
**
**
**
**
**
**
*BUS_ENA@ must transistion from off to on to start the bus
charging process.
**BUS_ENA@ must remain on during the drive operation
No
Hi HP
?
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No