Rockwell Automation 2364F Regenerative DC Bus Supply Unit (RGU) - Manual (Page 95)

Publication 2364F-5.01– October 2003
Adjusting Voltage and Current Regulation Parameters 9-3
Identifying the DC Bus Reference
The DC bus reference is the DC bus voltage that you program the
RGU to supply.
The user selects the source of the bus reference and the bus reference
value when required. The RGU then performs a minimum-maximum
comparison to ensure that the bus reference value is valid. Next, a
user-configured rate limiter adjusts the bus reference as necessary to
prevent the bus reference from changing too rapidly. Refer to Figure
9.3 for a firmware diagram of these operations.
Figure 9.3
Firmware Diagram for Identifying the DC Bus Reference
0
1
3
2
Ref Limit
Calculator
122
207
123
124
MAX MIN
125
Bus Rate
126 128
127
130
129
16
14 10
+
+
DC Bus
Reference
X
X
Y X
X
X
* Indirect, parameter X
Source; parameter X
Sink; parameter X
Parameter X, bit Y
Battery-backed, parameter X
SYMBOL KEY
Parameter Number Parameter Name
10 Nominal Line Voltage
14 Measured AC Line Voltage
16 Nominal DC Bus Voltage
122 Auxiliary Voltage Command
123 Voltage Mode Select
124 Minimum Bus Reference
125 Maximum Bus Reference
126 Bus Rate Reference
127 Bus Reference Change Rate
128 Bus Reference
129 Automatic Bus Reference
130 Automatic Bus Reference Tracking
207 Bus Voltage Command