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Terms and abbreviations used
General remarks „Terms and abbreviations“ is a glossary of specific technical terms essential for an
understanding of the service instructions.
Terms and abbre-
viations
BSL tool:
The BSL tool is a special tool for updating the power source with new firmware. A PC or
notebook is required for the update.
Config memory (CFM):
The CFM component supplements the UST2B PC board firmware (central control and
regulation unit) with individual, machine- specific data.
DSP:
Digital signal processor. Part of the UST2B PC board (central control and regulation
unit). The DSP captures digitised actual values on the part of the welding process, and
ensures constant regulation and optimisation of the welding current and voltage, on the
basis of
- the parameters set
- the saved firmware
- the actual values measured
EMI:
Electromagnetical interference. Electromagnetical interference is high-frequency
overlaps in the mains voltage. The line filter absorbs such overlaps and thereby ensu-
res optimum welding results and trouble-free operation of the power source.
FAC:
Factory resets settings in the setup menu. By pressing and holding the „Store“ button
for two seconds, the original factory settings can be restored. When the display reads
„PrG“, the welding machine has been reset. Jobs and parameter settings in the second
level of the set-up menu are not deleted.
Hall shunt:
Ensures electrically isolated measuring of the welding current. The UST2B (central
control and regulation unit) analyses the signal.
IGBT:
Insulated gate bipolar transistor. Is a special bipolar transistor for switching to high
power settings. IGBTs are used in the power source as modules. On the TT/MW 1700/
2200 power sources, IGBT modules are used in a secondary role to prepare the wel-
ding current for AC welding.
Instruction pointer:
When a software fault appears: Third display level displays more detailed information
on the cause of the fault (see „fault location aid“ section)
LocalNet RS232 converter:
For connecting the power source to the serial interface on a PC, for:
- uploading software options
- communicating data from the power source using PC-based software (Fronius
Backup, Fronius Service Module, Job-Explorer, etc.)
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