Hardware Manual

Hardware Manual PCD 1 / PCD 2 Series│Document 26 / 737│Edition EN 15│2008-07-

Saia-Burgess Controls AG

Introduction

Guidance

2

2 Guidance

2.1 Introduction

This manual covers the technical aspects of the PCD1 and PCD2 components. The

following terms are used frequently:

● CPU Central processing unit: the heart of the PCD

● RIOs Remote I/Os: inputs and outputs connected to the CPU via a

field bus such as Profibus

● LIOs Local I/Os: these are connected to the CPU via the I/O bus or a

RIO (i.e. with the shortest possible cables)

● Modules Input/output elements, mounted in a housing, matched to the

PCD1/2 system

● Module holders CPUs, RIOs or LIOs, to which modules may be attached

The aim of the Overview section is to present the essentials of planning and installing

control systems with PCD1/2 components. It covers the following topics:

● Planning an application

● Cabling

Details of hardware, software, configuration, maintenance and troubleshooting are

described in separate sections.