Industrial Electrics & Control Fundamentals for non-electrical personnel (Part 2)
Duration:
5 days
Prerequisites:
Attendance on our Industrial Electrics & Control Fundamentals Part 1 course or equivalent level of basic electrical knowledge & competence. To get the most benefit from this course (and not hold back other others), delegates should be able to successfully complete the pre-course assessment.
Aims:
This course has been developed primarily for non-electrical maintenance personnel as a Skills-Update course so that fitters & mechanically biased craftsmen can work safely alongside qualified electrical personnel. A brief review of basic tools & techniques is followed by coverage of a range of common modern industrial components & their principle of operation. Tips & techniques regarding how to safely check for correct/abnormal operation are provided. Safe Working Practices are covered & the fundamentals of troubleshooting motors, motor controls, circuits & systems are explained with plenty of practical exercises.
Objectives:
For specific course objectives see Training Record Log.
Content:
Module 1 - Review & Develop Current skills
- Review of skills from Part 1
- Safety Regulations
- Electrical Safety
- Electrical Test Tools
- Develop skills from Part 1
- Industrial Electrical Devices
- Electrical Protection Devices, (Fuses, MCBs, RCDs)
- Motor Protection Devices
- Contactors, Relays, solid state contactors
- Timers
- Power supplies
- Basic recognition, Key features, failure modes & testing of these devices
- Electrical Wiring Diagrams
- Reading electrical wiring diagrams
- Electrical Control Circuits
- Build a reversing start/stop motor control circuit with warning timer
- Modify the control circuit to include interlocks & indication
- Fault Finding Motor Control Circuitry
- Principles of logical fault-finding
- Practical exercises in fault-finding motor control circuitry
Module 2 – Industrial Motors
- Industrial motors
- Single phase, three phase, DC, servo
- Industrial 3 Phase AC Motors
- Practical exercises in non-live motor fault-finding
- Practical exercise connecting 3 phase motor to previously built motor control circuit
- Motor starting with Star & Delta & softstarts
- Practical exercise adding softstart to motor circuit
Module 3 – Safety Circuits
- Safety Components in Motor Control Circuitry
- An overview of regulations & standards
- Machinery protection devices
- Overview of devices, including guarding, guard switches, locking systems & electronic safety sensors
- Understanding the safety relay
- Incorporate a Safety Relay to the reversing start/stop motor control circuit
- Practical circuit connections using safety relays & different switching devices
Module 4 – Sensors
- Introduction to sensor types
- Review what is available & widely used
- Understand the connection of PNP & NPN sensors
- NO, NC & alarm outputs
- Fixed, adjustable & teachable sensors
- Digital & analogue
- Inductive & Capacitive
- Photo electrical sensors (through beam, reflective, diffuse, background suppression)
- Practical exercise in connecting & setting up, including how to check & replace & how to read
datasheets
Module 5 – Automation
- An Overview of Motor Starting & Speed Control Units
- Principles of VSD operation
- Importance of DC link & PWM output
- Examples of wiring diagrams with VSD motor control
- Practical exercise in wiring up a VSD & controlling motor speed
- Automated Control Sequencing Overviewed
- PLC basics
- Concepts of I/O & stored programs
- I/O indicators
- Recognising PLC control in a wiring diagram
- Practical exercise in wiring up a PLC to a VSD & sensors, using sensor inputs to control speed & direction of a motor