AS-Interface
Connections, Displays and Controls
Subject to reasonable modifications due to technical advances.
Copyright Fuchs, Printed in Germany
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Lead breakage as well as a short circuit caused by the power rail is prevented due to
the power rail's solid construction..
5.3.3
Device Terminal Connections
In addition to or in combination with power rail connections, the KF… designs can be
conventionally connected by means of removable device terminals. The terminal ar-
rangement is shown below.
The device terminals consist of screw type cable piercing terminals which allow for
the connection of 14 AWG cables (2.5 mm²). The connectors are 3 pin connectors;
they can be keyed to prevent connection errors.
Removable terminals simplify the assembly of the switch encloser and allow for the
replacement of components without taking the system off line.
5.3.4
Gateway Power Supply
The gateway is supplied through the AS-i circuit. A connection to the AS-i cable is es-
tablished by means of the power rail and/or with the device terminals. The terminal
layout is displayed in the diagram above.
It is important to note when using the power unit that these AS-Interfaces are compat-
ible and have the necessary decoupling coils.
5.4
The PROFIBUS Interface
The serial interface is a 9 pin SUB-D connector. It is located on the right side of the
device front. The other possibility is to use the device terminals. The wiring is shown
in the picture below:
The AS-i/Profibus-Gateway with an RS485 interface transmitts and receives through
pins 3 and 8 of the SUB-D connector or terminals 25 and 26 of the device terminals.
The RxD-TxD-P signal (B cable per PROFIBUS specifications) is assigned to pin 3
UPR 05
PR 05
PROFIBUS
interface
RxD/TxD-P
RxD/TxD-P
Shield
Shield
RxD/TxD-N
RxD/TxD-N
