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Hardware and Connections
Connections to
Plug-In Terminals
2-16
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:
18 terminal block:
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.
12 terminal
c
b
a
1
2
a
b
c
b
a
3
4
a
b
c
b
a
5
6
a
b
c
b
a
7
8
a
b
c
b
a
9
10
a
b
c
b
a
11
12
a
b
Figure 2-16
Schematic diagram of the plug-in terminal blocks
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
Group 1
Terminals 1 through 6
Group 2
Terminals 7 through 12
Group 1
Terminals 1 through 9
Group 2
Terminals 10 through 18
Signal connection
Common connection
Shielding connection
c
Common connections, group 1
c
looped together
c
c
c
c
Common connections, group 2
looped together
Shielding connections
looped together
18 terminal
c
b
a
1
2
a
b
c
c
b
a
3
4
a
b
c
c
b
a
5
6
a
b
c
c
b
a
7
8
a
b
c
c
b
a
9
10
a
b
c
c
b
a
11
12
a
b
c
c
b
a
13
14
a
b
c
c
b
a
15
16
a
b
c
c
b
a
17
18
a
b
c
7SA6 Manual
C53000-G1176-C156-2
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