Hardware and Connections
2-11
7SA522 Manual
C53000-G1176-C119-2
inside the 7SA522. Each common group can, for example, be used for signal multipli-
cation or as a common point for a signal (independent of the signals on the pin “a” ter-
minals). Depending on the version of the terminal block, 18 or 12 common connec-
tions are available.
Grouping of common connections within a terminal block is as follows:
12 terminal block:
Group 1
Terminals 1 through 6
Group 2
Terminals 7 through 12
18 terminal block:
Group 1
Terminals 1 through 9
Group 2
Terminals 10 through 18
All shielding pins are connected together as shown in Figure 2-12. The shielding pins
are also connected to the housing. Depending on the version of the terminal block, 18
or 12 shielding connections are provided.
Figure 2-12
Schematic diagram of the plug-in terminal blocks
Connections to
Plug-In Terminals
Connections to plug-in terminals are made with pin connectors.
There are two versions of pin connectors:
Version 1: 2-pin connector
Version 2: 3-pin connector
Signal connection
Common connection
Shielding connection
Common connections, group 1
looped together
Common connections, group 2
looped together
Shielding connections
looped together
c
b
a
a
b
c
a
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c
a
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a
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a
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a
2
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9
10
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12
1
c
b
a
a
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a
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a
2
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12
1
a
b
c
a
b
c
a
b
c
c
b
a
c
b
a
c
b
a
13
14
15
16
17
18
12 terminal
18 terminal
Summary of Contents for siprotec 7SA522
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Page 89: ...SIPROTEC 4 Devices 4 25 7SA522 Manual C53000 G1176 C119 2 Figure 4 20 CFC Logic example ...
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Page 620: ...Appendix B 48 ...