Siemens 7XT71 Series Manual page 9

7XT7100-0*A00/DD
Setting the Frequency of Polarity Reversal:
Via a quadruple switch S2 located on the printed circuit breaker 8 different frequencies of
polarity reversal can be selected.
Switch S2
Frequency of polarity reversal
0.5 Hz
1.0 Hz
1.5 Hz
2.0 Hz
2.5 Hz
3.0 Hz
3.5 Hz
4.0 Hz
The frequency of polarity reversal in the default setting is 1,5 Hz. Any changes in the default
setting of the frequency of polarity reversal may be indicated on the label of the front panel
of the device (see Figure 1) making a cross on the corresponding frequency value.
The following figure is a partial view of a module pulled out of the housing. Position and
designation of the relevant switches can also be learned from this illustration.
Figure 2 Part view of the board
C53000-B119U-C128-1
S2.1 S2.2
OFF OFF
OFF ON
OFF OFF
OFF ON
OFF OFF
OFF ON
OFF OFF
OFF ON
English
S2.3 S2.4
OFF OFF
OFF OFF
ON OFF
ON OFF
OFF ON
OFF ON
ON ON
ON ON
Front panel
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