Siemens siprotec 7SA6, Manual

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Hardware and Connections
2-16
7SA6 Manual
C53000-G1176-C156-2
inside the 7SA6. Each common group can, for example, be used for signal multiplica-
tion or as a common point for a signal (independent of the signals on the pin “a” termi-
nals). Depending on the version of the terminal block, 18 or 12 common connections
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 2-16. 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 2-16 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 b c
a b c
a b c
a b c
a b c
c b a
c b a
c b a
c b a
c b a
2
3
4
5
6
7
8
9
10
11
12
1
c b a
a b c
a b c
a b c
a b c
a b c
a b c
c b a
c b a
c b a
c b a
c b a
2
3
4
5
6
7
8
9
10
11
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