Introduction to PLCs & PLC Fault-finding Principles

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Introduction to PLCs Duration:

1 day

Prerequisites:

Basic electrical familiarity

Aim:

Attendees will appreciate the basic elements of all PLC systems, understand the terminology used, be aware of how they are programmed & know how they work.

Content:

Understand the background to the introduction & development of PLC systems Understand the main functional hardware units of a PLC system Understand how a PLC system interfaces with the machine or plant to be controlled Understand the difference between power supplies for PLC operation & power supplies for I/O circuits Understand field wiring for I/O modules & PNP / NPN How I/O circuits function & are tested Understand the concept of field I/O & internal flags/markers Understand the difference between digital I/O & analog I/O signals Understand the concepts of a stored control program, cyclic program scan & the implications for machine performance Understand PLC modes of operation (STOP/RUN) Understand the principle of local & remote I/O including the use of fieldbuses for de-centralised I/O Understand how PLCs are programmed & the different languages available Understand how the PLC program can be monitored Basic understanding of PLC “N.O. & N.C. contacts� & interpretation of screen highlights Understand how the PLC can be used to troubleshoot machine problems

Introduction to PLCs & PLC Fault-finding Principles

Introduction to PLCs & PLC Fault-finding Principles

PLC Fault-finding Principles Duration:

1 day

Prerequisites:

Basic PLC knowledge or awareness gained through training or practical experience or attendance on Introduction to PLCs course

Aims:

The Course compares the normal behavior of the major functional components of a PLC system with field operation to highlight key checkpoints & actions to be taken. Course attendees will learn about basic diagnostic tools & techniques & will be encouraged to develop standard procedures to aid more efficient & effective troubleshooting

Content:

Understand basic safety considerations when working with PLCs (personal & machine) Able to confirm power to PLC system (CPU/CPU rack, I/O rack(s), I/O modules) Able to recognise main system LEDs (RUN/STOP, FAULT) Able to identify battery condition (interpretation of the battery LED if an indicator exists) Able to identify any key/switch to change PLC mode (RUN/STOP) Understand the range of memory options including EPROM/EEPROM & implications for machine starts & operation with/without a battery Able to understand the purpose & operation of any system resets or restarts (including RUN/PGM/ RUN & power cycle) Able to relate the operation of field devices to I/O LEDs Able to read & interpret simple electrical drawings & PLC program printouts & cross references Able to understand how to distinguish between PLC system & I/O faults

Kiowa is not liable for the use or applications that differs from what is confirmed in their technical catalogue, product sheets, offers, order confirmations and recommendations contained in them.

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