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Panasonic ST4 Instruction Manual
2.5 Wiring
41
2.5.3 Connecting
to
the Terminal Block
For the connection with the terminal block of the controller, insert a solid wire or twisted wire
(lead wire) with a ferrule into the hole till it stops. The wire is locked when properly inserted.
Flathead
screwdriver
Lead wire
Ferrule (sleeve) terminal
Release button
When connecting a twisted wire (lead wire) without a ferrule, insert the wire to the innermost of
the terminal hole while pressing the release button.
If you want to release the solid wire or the twisted wire (lead wire), pull the wire while pressing
the release button.
CAUTION
However, do not pull the wire with excessive force, as this can cause a cable
break.
The following wires are recommended:
•
Terminal block connector: 0.2 to 1.5mm
2
(AWG 24 to 16)
•
Power supply side connector (A1, A2) (ST4-C12EX only): 0.2 to 2.5mm
2
(AWG 24 to
12)
2.5.4 Terminal
Arrangement
Diagram
The following tables list the terminals of the controllers ST4-C11 and ST4-C12EX.
Controller ST4-C11
Terminal name
Description
IL+
IL-
Interference prevention terminals (downstream)
For details, see "Interference Prevention Function" on
page 54.
IU+
IU-
Interference prevention terminals (upstream)
For details, see "Interference Prevention Function" on
page 54.
X1
X2
X3
Reset input terminals:
•
When X1 and X2 are connected: manual reset
•
When X1 and X3 are connected: auto-reset
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