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ALPHA FIX Terminal Blocks
Terminals with Spring-Loaded Connection
8WA initiator/actuator terminals
12/83
Siemens ET A1 · 10/2008
12
■
Overview
• Fast and cost-effective connection from signal transmitters to
the PLC
• Only 5 mm wide but still fitted with connection option for prox-
imity switches with up to three conductors plus shielding
• Connection is clear, simple and safe due to:
- Front connection
- Color coding of clamping points
- Conductors from only 0.08 to 1.5 mm² without end sleeves
that are secured using spring-loaded terminals
• LEDs make the switch states or the application of voltage visi-
ble, it is no longer necessary to test with measuring instru-
ments
• Connection modules cut wiring requirements and time be-
cause the potentials of the terminals (L+, L– and S) are auto-
matically connected; there is therefore no need for linking ac-
cessories
• The modules contain a feeder terminal and 8 or 17 initiator/ac-
tuator terminals and can be snapped or screwed onto 35 mm
standard mounting rails
The feeder terminals are fitted with an additional negative outgo-
ing feeder which can be used to supply isolated digital input/out-
put modules. The frame (M) can therefore be bridged by means
of the terminals.
Terminals and connection modules (always order as combined unit)
Initiator/actuator terminals with electrically isolated digital input/output
modules
L
N
S
H
0
_
0
0
0
0
7
c
8
8
0
1
2 3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
L
L
L
S
E
0
E 1
2 3
4
5
6
7
1
1
3
4
3
2
1
2
3
4
Digital input output
modules, electrically
isolated
Feeder terminal
Initiator actor terminals
Module link rails
M(Minus)
M(Minus)
© Siemens AG 2008
