Rockwell Automation 2364F Regenerative DC Bus Supply Unit (RGU) User Manual
Page 108

Publication 2364F-5.01– October 2003
10-2
Interpreting and Setting Status, Command, and Fault Words
Table 10.1 Descriptions of Fault Status Bits
Fault Status Word 1 (P174-P176)
Bit
Description
0
ROM bad CRC
1
RAM error
2
Battery-backed RAM error
3
Error loading DSP software
4
Error loading FPGA software
5
I
q
foldback has occurred
6
M1 failure
7
SCANport error
8
RGU-to-RGU hardware error
9
Control voltage inadequate
10
Heatsink temperature is high
11
DC bus voltage less than minimum bus limit
12
DC bus voltage greater than maximum bus limit
13
Invalid data in battery-backed RAM
14
Bus failed to precharge
15
Host processor cannot connect to DSP processor
Fault Status Word 3 (P180-P182)
Bit
Description
0
Reset due to host clock loss
1
Reset due to host double bus fault
2
Watchdog reset
3
RGU power-up enabled
4
Battery low for battery-backed RAM
5
Primary control clock has been lost
6
RGU-to-RGU duplicate address
7
Slave RGU lost communications from Master RGU
8
Dual-port RAM error
9
DSP clock is no longer synchronized with host clock
10
Loss of fast task
11
Loss of background task
12
Address bus error
13
Data bus error
14
Line voltage is low
15
Line voltage is high
Fault Status Word 2 (P177-P179)
Bit
Description
0
Board-level desaturization
1
Board-level ground fault detected
2
Hardware-detected bus overvoltage
3
Hardware-detected bus overcurrent
4
Zero sequence errror
5
Phase-lock loop
6
Phase-loss error
7
RESERVED
8
RESERVED
9
RESERVED
10
Line overcurrent
11
Current offset
12
DSP processor not connecting to host
13
RESERVED
14
RESERVED
15
Unknown DSP processor error
Fault Status Word 4 (P183-P185)
Bit
Description
0
I
2t
approaching overload
1
I
2t
overload
2
Heatsink temperature high
3
Reset required
4
Heatsink sensor open, not connected
5
Heatsink sensor shorted
6
Master RGU has faulted
7
RESERVED
8
RESERVED
9
RESERVED
10
RESERVED
11
RESERVED
12
RESERVED
13
RESERVED
14
RESERVED
15
RESERVED