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3. Functions
In order for the Thyro-A to be adapted as best possible to the required
application, it has numerous functions. These functions are described
in this chapter.
3.1 Operating modes
The user selects the operating mode most suitable for optimum ad-
aptation to the various applications and manufacturing processes, as
well as to different electrical loads.
3.1.1 Full wave switch principle TAKT
In this operating mode, the mains voltage is switched periodically,
relative to the defined setpoint. Integer multiples of the mains periods
are switched to avoid d.c. components. The operating mode full wave
switch principle TAKT is particularly suited for loads with thermal iner-
tia. The most important settings for this operating mode are the cycle
time (T
) and the transformer load (see page 45, Setting the transfor-
0
mer load).
The use of this function achieves the lowest mains feedback. Any
mains feedback that will be still present (e.g. flicker) can be reduced
to an insignificant amount using system load optimization (see page
35, Mains load optimization).
NOTE
Ideal adaption of the Thyro-A to the load
Choose the operating or control mode to adapt the
Thyro-A to best match the load.
NOTE
Times given
The times given (duration), e. g. T
on a 50 Hz mains frequency. With a mains frequency of
60 Hz, the times go down to 5/6 of the indicated value.
0
18
or SST are based
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