Siemens SIPROTEC 4 7XT7100-0 A00/EE Series Product Information page 28

9.2.3 Frequency Setting
The DIP switch S1 on the printed circuit board assembly allows you to adjust the
polarity reversal frequency (frequency of the square-wave generator).
The DIP switch is located as follows on the printed circuit board assembly:
DIP switch S1
Fig. 9-2
The frequency settings with DIP switch S1 are listed in the following figure:
Fig. 9-3
26
Location of DIP Switch S1 on the Printed Circuit Board Assembly
OPEN
1 2 3 4
OPEN
1 2 3 4
OPEN
1 2 3 4
OPEN
1 2 3 4
Settings of the Frequency with DIP Switch S1
(on the printed circuit board assembly)
4.0 Hz
1 2 3 4
3.5 Hz
1 2 3 4
3.0 Hz
1 2 3 4
2.5 Hz
1 2 3 4
SIPROTEC 4/5, Injection Unit 7XT71, Product Information
C53000-B1174-C128-7, Edition 09.2016
Connector X5
OPEN
2.0 Hz
OPEN
1.5 Hz
OPEN
1.0 Hz
OPEN
0.5 Hz