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MBT-4000 Multi-Band Transceiver System
Faults/Events
B.2
Faults/Events
There are three types of Faults/Events that may occur and be recorded in the event log of an
MBT-4000, BDC-4000, or BUC-4000:
•
Summary Faults
•
Configurable Summary Faults
•
Informational Events.
Each of these are described in further detail in the
next subsections; Tables B1 through B6 list
possible Fault/Event messages where applicable.
An example of a faulted system is shown in
Figure B-2; here, Unit 2 has faulted.
B.2.1
Summary Faults
Summary Faults indicate improper operation. When a Summary Fault condition occurs, the
Summary Fault Relay will be de-energized. If a Summary Fault occurs on a converter, it will
mute. If a Summary Fault occurs on the base unit, the applicable converters (one or both) will be
muted according to the specific error. If a Summary Fault occurs on the online unit of a redundant
pair, the offline unit will detect the fault and assume online state. In all cases, a corresponding
event message will be added to the event log.
Mnemonic
15V PS1
28V PS1
5VT PS1
7V5 PS1
IIC BUS
Mnemonic
15V SUP
5VT SUP
7V5 SUP
OVR TMP
PLL LD
Table B-1. MBT-4000 Summary Faults
Type
Mute
Summary Fault
All
Summary Fault
All
Summary Fault
All
Summary Fault
All
Summary Fault
All
Table B-2. BDC-4000/BUC-4000 Summary Faults
Type
Summary Fault
The 15 volt power supply is out of tolerance.
Summary Fault
The 5 volt power supply is out of tolerance.
Summary Fault
The 7.5 volt power supply is out of tolerance.
Summary Fault
The maximum operating temperature has been exceeded.
Summary Fault
The PLL has lost lock.
Figure B-2. Faulted System Example
The 15 volt power supply is out of tolerance.
The 28 volt power supply is out of tolerance.
The 5 volt power supply is out of tolerance.
The 7.5 volt power supply is out of tolerance.
Unable to communication via the internal high speed
communication bus
Description
B–2
Revision 4
MN/MBT4000.IOM
Description
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