Rockwell Automation SB3000 Configuration and Programming - Manual (Page 42)

3-24 SB3000 Drive Configuration and Programming
Drive Status Register (Continued) 200/1200
CCLK Synchronized Bit 14
The CCLK Synchronized bit is set when the
CCLK in the UDC module is synchronized
with CCLK in the Rectifier’s PMI Processor. Hex Value: 4000H
Sug. Var. Name: CCLK_OK@
Access: Read only
UDC Error Code: N/A
LED: N/A
This bit is equal to zero if CCLK is not turned on in the AutoMax rack or if there have
been two consecutive instances when CCLK is not synchronized after the
application task has turned CCLK on. In this case, the feedback data from the PMI
is not current.
This bit should normally be used only in the start permissive logic for the Rectifier
(which must be true only once to start the Rectifier). It does not have to be used in
the run permissive logic for the Rectifier (which must be true during the entire
execution of the task.
Refer to the Communication Lost Fault bit description (register 202/1202, bit 15) for
more information.
PMI Operating System Loaded Bit 15
The PMI Processor sets the PMI Operating
System Loaded bit when the operating
system has been successfully downloaded
from the UDC module to the PMI Processor
after power-up. Hex Value: 8000H
Sug. Var. Name: PMI_OK@
Access: Read only
UDC Error Code: N/A
LED: N/A
I/O Status Register 201/1201
The bits in the I/O Status register indicate the current state of the inputs on the Rectifier’s Resolver & Drive
I/O module.
Run Permissive Input Bit 0
The Run Permissive Input bit displays the
status of the Run Permissive Input signal to
the Rectifier. This signal is brought in
through the Resolver & Drive I/O module in
the Rectifier’s PMI rack. Hex Value: 0001H
Sug. Var. Name: RPI@
Access: Read only
UDC Error Code: N/A
LED: RPI on Resolver
Module
This bit is on if voltage is present at the Run Permissive input. If this bit is on, the
Rectifier is permitted to fire its IGBT power devices. If this bit is off, the Rectifier is
prohibited from firing its power devices.
Note that turning off RPI does not disable output voltage. If AC input power is on,
the emitter-collector diodes in the IGBTs supply rectified line voltage to the output
terminals, independent of the state of RPI.