Rockwell Automation 2364F Regenerative DC Bus Supply Unit (RGU) - Manual (Page 216)

Publication 2364F-5.01– October 2003
G-4 Glossary
Regenerating Current
Current which is being driven back from the motors (from motoring induction) to the DC
bus. RGUs are able to place regenerating current back onto the AC line.
Remote I/O
A serial communications architecture which can be used between the RGU, PLCs, drives,
and other drive system components. The RGU requires a special communication interface
board to use remote I/O.
RGU-to-RGU (R2R) Communications
A communication link used between master and slave RGUs. In R2R communications,
the master RGU passes current commands, status information, and synchronization
signals to the slave RGUs.
SCANport
Communications technology which is used by many Rockwell Automation products.
HIMs, PLCs, and many drive systems products can communicate with one another
through SCANport.
TE (Zero Potential)
TE provides a zero potential between communication endpoints.
Top Hat Assembly
An enclosure which is used for AC wire entry.
Trending
A monitoring process. The RGU can be programmed to sample a parameter value when a
specific condition occurs in the unit.
Voltage Loop
A portion of firmware which is responsible for sending a voltage command to the current
loop. The voltage bandwidth determines the number of voltage commands to be made per
second, and the voltage damping determines the precision of the voltage command
process.