Rockwell Automation SB3000 AC Power Modules - Manual (Page 43)

Diagnostics and Troubleshooting 4-5
4.3.1 Faults
The following faults will cause the SB3000 Power Module to shut down. See table 4.3.
In a fault situation, the PMI Processor will command zero current and will stop firing
the IGBTs; however, the IGBT emitter-collector diodes will supply rectified line voltage
to the DC bus until AC input power is disconnected. Faults must be reset before the
SB3000 Power Module can be restarted.
Table 4.3 – SB3000 Fault Register 202/1202
Bit
Suggested
Variable
Name
UDC
Error
Code Description Summary
0 FLT_OV@ 1018 The DC Bus Overvoltage bit is set if the DC bus voltage exceeds 900
VDC.
1 FLT_DCI@ 1020 The DC Bus Overcurrent bit is set if the DC bus current exceeds 125%
of the rated SB3000 Power Module current.
2 FLT_GND@ 1021 The Ground Current Fault bit is set if the ground current exceeds the
hardware trip point. See section 4.3.1.3.
3 FLT_IOC@ 1017 The Instantaneous Overcurrent Fault bit is set if an overcurrent is
detected in one of the power devices.
4 FLT_LPI@ 1022 The Local Power Interface bit is set if the power supply voltage on the
LPI module is not within tolerance.
5 FLT_GDI@ 1023 The Gate Driver Interface Fault bit is set if the power supply voltage on
the Gate Driver Interface (GDI) module is not within tolerance.
6 FLT_CHG@ 1024 The Charge Fault bit is set if either of the following occurs: the
pre-charge contactor does not close when commanded to by the PMI
Processor or the contactor opens without being commanded to do so.
7 FLT_OT@ 1016
The Overtemperature Fault bit is set if the fault level thermal switch (85
o
C (185
o
F)) in the SB3000 Power Module opens.
10 FLT_PWR@ 1025 The Power Loss Fault bit is set if AC line power is lost for more than ten
seconds while the SB3000 Power Module is running.
11 FLT_PTM@ 1011 The Power Technology Fault bit is set if the AC Power Technology
module fails.
12 FLT_PS@ 1012 The PMI Power Supply Fault bit is set if the PMI rack’s power supply
fails.
13 FLT_RW@ 1013 The PMI Read/Write Fault bit is set if a PMI Processor read or write
operation fails.
14 FLT_RUN@ 1014 The UDC Run Fault bit is set if the UDC task stops while the voltage
loop is running.
15 FLT_COM@ 1015 Communication Lost Fault bit is set if fiber-optic communication
between the PMI Processor and the UDC module is lost due to two
consecutive errors of any type.