Rockwell Automation 2364F Regenerative DC Bus Supply Unit (RGU) - Manual (Page 101)

Publication 2364F-5.01– October 2003
Adjusting Voltage and Current Regulation Parameters 9-9
Generating a Voltage Loop I
q
Command
The voltage loop I
q
command can originate in one of four ways as
determined by user-configurable P90. That resulting I
q
command is
then processed through the current limiter to arrive at a voltage loop
I
q
command. The current limiter makes adjustments to maintain
minimum and maximum I
q
values and acceptable wire temperatures.
Refer to Figure 9.7 for a firmware diagram.
Figure 9.7
Firmware Diagram for Generating a Voltage Loop I
q
Command
0
100 ms
LPF
100% = Rated AC Current = 5120
"IT"
89
84
90
94
Current Limit
3 34
4 34
200
95
96
98 97
91 92 MAX MIN
-1 -1
0 35
2 35
88
10%
Max Positive
Max Positive 83
86
87
2 183
10 174
5 174
0
1
2
3
0
1
0
1
+
+
I
q
Necessary for
Error Correction
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
34 bit 3 Host Status Word 2 - I
q Positive Limit
34 bit 4 Host Status Word 2 - Iq Negative Limit
35 bit 0 Host Mode - Regeneration Only
35 bit 2 Host Mode - Auxiliary Limit
83 It Foldback Current Limit
84 Voltage Regulator Output
86 Transistor Junction Temperature
87 Heatsink Temperature
88 Auxiliary Iq Current Limit
89 Auxiliary Iq Current Command
90 Iq Mode Select
91 Iq Positive Current Limit
92 I
q Negative Current Limit
94 Iq Current Command
95 Filtered Iq Current Reference
96 Iq Current Reference
97 Net Positive Current Limit
98 Net Negative Current Limit
174 bit 5 Host Fault Status Word 1 - Iq Foldback
174 bit 10 Host Fault Status Word 1 - Heatsink
Overtemperature
183 bit 2
Host Fault Status Word 4 - I
2t Overload
200 Iq Reference Rate Limit
Parameter Number Parameter Name