This unit involves the skills and knowledge required to fault find and repair analogue circuits and components in electronic control systems.

It includes fault finding and repairing analogue circuits as well as completing and reporting on fault and repair activities. It also includes analogue circuits and components to logical fault-finding processes, implementing fault rectification, safety and functional testing.

The skills and knowledge described in this unit require a licence or permit to practice in the workplace where work is carried out on electrical installations which are designed to operate at voltages greater than 50 volt (V) alternating current (a.c.) or 120 V direct current (d.c.).

Competency development activities in this unit are subject to regulations directly related to licensing. Where a licence or permit to practice is not held, a relevant contract of training, such as an Australian apprenticeship, is required.

Additional and/or other conditions may apply in some jurisdictions subject to regulations related to electrical work. Practice in the workplace and during training is also subject to work health and safety (WHS)/occupational health and safety (OHS) regulations.

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Prepare to fault find analogue circuits

1.1

WHS/OHS requirements and workplace procedures are identified and applied

1.2

Hazards are identified, risks assessed and control measures implemented

1.3

Safety hazards not previously identified are reported on job safety assessment and advice on risk control measures is sought from relevant person/s

1.4

Extent of faults is determined from reports, other relevant documentation and discussions with relevant person/s

1.5

Relevant person/s is consulted to ensure work is coordinated with others

1.6

Tools, equipment and testing devices required to diagnose faults are obtained in accordance with workplace procedures and checked for correct operation and safety

2

Fault find and repairanalogue circuits

2.1

WHS/OHS risk control measures and procedures for carrying out the work are followed

2.2

Need to test or measure live electrical components is determined in accordance with workplace procedures

2.3

Circuits/machines/plant are checked and isolated in accordance with workplace procedures

2.4

Logical diagnostic methods are applied to electronic control system apparatus faults by employing measurements and estimations of system operating parameters

2.5

Scenarios are tested as suspected cause of system faults

2.6

Fault causes are identified and relevant person/s engaged where fault is outside scope of analogue circuits and components

2.7

Faults in electronic components of control system are rectified

2.8

System is tested and verified as operating to specified job requirements

2.9

Unplanned situations are responded to in accordance with workplace procedures in a manner that minimises risk to personnel and equipment

2.10

Methods for dealing with unexpected situations are selected based on safety and specified work outcomes

2.11

Diagnosis and rectification work activities are performed using sustainable energy principles and practices without waste of materials, damaging apparatus, the surrounding environment or services

3

Complete and report fault-find and repair activities

3.1

WHS/OHS work completion risk control measures and procedures are followed

3.2

Work site is made safe in accordance with workplace safety procedures

3.3

Rectification of faults is documented in accordance with workplace procedures

3.4

Relevant person/s is notified of system fault rectification in accordance with workplace procedures

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least two separate occasions and include:

applying diagnostic methods

applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements, including implementing risk control measures

applying sustainable energy principles and practices

completing and reporting faults and repairs

consulting relevant person/s

dealing with unplanned events/situations in accordance with workplace procedures in a manner that minimises risk to personnel and equipment

documenting fault rectification

finding and repairing faults of analogue circuits

identifying, rectifying and determining extent of faults and causes

isolating circuits/machines/plant

obtaining tools, equipment and testing devices

rectifying faults in system analogue circuits and components

testing and measuring live electrical components

using fault scenarios to test causes of system faults

verifying the control system operates correctly.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

amplifier fundamentals, including:

the purpose and application of amplifiers

the basic characteristics of small signal amplifiers

the ideal operational amplifier

basic operational amplifier configurations, including:

various operational amplifier circuit configurations and where they are used

measured and calculated values of gain and output voltage for various operational amplifier configurations

circuit configurations, including:

inverting

non-inverting

voltage follower

summing

comparators

Schmitt trigger

differential configurations

operational amplifier limitations, including:

use of frequency compensation

offset null

bias compensation

slew rate

frequency response

bandwidth

noise figures

single-stage amplifiers, including:

determination of direct current (d.c.) bias conditions for a single-stage amplifier

small signal terminal characteristics of single-stage amplifiers

effects of coupling and by-pass capacitors in single-stage amplifiers

amplifier applications, including:

operation of multi-stage amplifiers

effects of component values and frequency response

negative feedback loop in multi-stage amplifiers

negative feedback and amplifier parameters

effects on the output voltage when amplifiers are subjected to control signal overdrive, bias faults and amplifying device faults

operational amplifier /diode circuits, including:

clippers

clamp circuits

precision rectifiers

oscillators, including:

oscillator circuits using operational amplifiers

sine wave

square wave

triangular wave

sawtooth

operational amplifier /resistance/capacitance (RC) circuits, including:

integrator

differentiator

function generators

filters, including:

active filter circuits

first and second order

low, high and band pass circuits

timers, including operation of typical timer integrated circuits

power amplifiers including:

power output integrated circuits

power amplifiers using operational amplifiers

power supplies

multi-stage circuits, including:

circuits using several different operational amplifier configurations

fault-finding procedures

analogue circuit faults

analogue circuits and components in electronic control systems

diagnostic methods

relevant job safety assessments or risk mitigation processes, including risk control measures

relevant manufacturer specifications

relevant WHS/OHS legislated requirements

relevant workplace documentation

relevant workplace policies and procedures

sustainable energy principles and practices

system testing and verification techniques.

Assessors must hold credentials specified within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must satisfy the Principles of Assessment and Rules of Evidence and all regulatory requirements included within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must occur in workplace operational situations where it is appropriate to do so; where this is not appropriate, assessment must occur in simulated workplace operational situations that replicate workplace conditions.

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Resources for assessment must include access to:

a range of relevant exercises, case studies and/or other simulations

relevant and appropriate materials, tools, equipment and personal protective equipment (PPE) currently used in industry

applicable documentation, including workplace procedures, equipment specifications, regulations, codes of practice and operation manuals.

Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.

Fault finding and repairing must include at least four of the following faults in analogue circuits and components:

open circuit

short circuit

incorrect or failed connections

insulation failure

unsafe condition

apparatus/component failure

related mechanical failure

Electrotechnology

Instrumentation & Control