MEM18067 — Tune control loops - multi controller or multi element systems

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What an assessment for MEM18067 must cover

52 assessable components: 5 elements (20 performance criteria), 12 performance evidence and 20 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.

Elements & performance criteria

1 Determine job requirements

1.1Follow standard operating procedures (SOPs)
1.2Comply with work health and safety (WHS) requirements at all times
1.3Use appropriate personal protective equipment (PPE) in accordance with SOPs
1.4Identify job requirements from specifications, drawings, job sheets or work instructions

2 Determine control loop characteristics

2.1Examine engineering specifications, technical information and historical process, records and trends for relevant data
2.2Carry out consultation with system operators and other relevant plant personnel and extract relevant data and document to procedures
2.3Read programmed maintenance/service reports and note relevant data
2.4Analyse data and ascertain control loop characteristics

3 Record control loop responses

3.1Record control loop responses in open and closed loop mode using chart recorders and data loggers
3.2Test unit for tuning using appropriate diagnostic techniques
3.3Analyse diagnostic results against specifications

4 Tune control loops

4.1Perform tuning operations by applying control loop device characteristics, controller mode principles and adjustment methods using appropriate equipment, procedures and techniques
4.2Monitor and adjust control loop components during controller tuning operation using test recording equipment
4.3Apply step response – open loop tuning calculations to achieve specified loop characteristics
4.4Use closed loop tuning methods incorporating ultimate sensitivity and systematic trials to achieve specified loop characteristics
4.5Use correct sequence of tuning on multi controllers and/or multi element systems to achieve specified characteristics
4.6Tune control loops to optimum mode settings
4.7Recommission process control loop to specifications

5 Complete service reports

5.1Adopt appropriate follow-up procedures
5.2Complete service reports according to SOPs

Performance evidence

following work instructions, standard operating procedures (SOPs) and safe work practices
identifying and interpreting engineering specifications, technical information, diagrams and drawings, documents and historical records and obtaining relevant data with respect to tunning control loops
consulting with system operators and other relevant personnel with respect to the control loop characteristics, including an open and closed loop system and confirming function/malfunction of the system and/or its components
checking operational characteristics of the control devices, signal conversion instruments and final control elements for conformance to specifications
locating, reading and interpreting in-built fault indicators and error codes and identifying faults/defects in control system
obtaining relevant pneumatic, electrical and electronic circuit diagrams and testing and monitoring control loop for correct operation and recording the operational responses of the control system/loop
using fault-finding and diagnostic techniques and procedures throughout the monitoring and testing phase and comparing collected data with the operational specifications of the control system
dismantling/disassembling serviceable items using appropriate tools, techniques and procedures
setting and adjusting the controller modes using appropriate test and calibration equipment for the monitoring and adjustment of control loop tuning
checking the control instrumentation for correct zero, span and range and making final adjustments, as required
tuning the control loop to optimum mode settings and recommissioning the control system
completing all service reports, including appropriate follow up procedures in accordance with SOPs.

Knowledge evidence

safe work practices and procedures and use of personal protective equipment (PPE)
proportional integral differential (PID) control loops tuning/calibration techniques
mathematical computations, including algebra, exponentials and logarithms, equations, graphs, charts, vectors, complex numbers and Boolean algebra
relevant data, including information from in-built devices on the control loop characteristics
specifications of each system component
control programming
supervisory control and data acquisition (SCADA) systems, programmable logic controller (PLC) systems, distributive control systems (DCS) and computer-based systems
procedures for: • documenting/reporting information • documenting control system tests and analysis • isolating and testing the control system and its components • verifying apparent faults in circuits and/or control system components • dismantling/ disassembling components for repair or replacement • assembling repaired and/or replacement items • calibration of control system components and necessary equipment • checking control instruments for zero, span and range • making final adjustments to ensure all control system components conform to specification • commissioning the control system
signal transmission, including the principles of operation of the final control element, procedures for calibrating and adjusting the control system
correct function of the circuits and components within the control loop
calibration and adjustment methods for the control loop devices
configuration of the digital control system software
operational responses and procedures for monitoring and recording test and operational data
fault-finding and diagnostic techniques throughout the monitoring and testing process
deviations/variations from specification
correct maintenance procedures for serviceable item(s)
adjustments which affect the calibration to control system components
controller modes and actions
reporting/recording requirements associated with the commissioning of the control system
follow-up actions to be undertaken after maintaining/repairing control system instrumentation.

Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.

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Questions about assessing MEM18067

What does an assessment tool for MEM18067 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for MEM18067 needs to address all 52 unit components: 5 elements with 20 performance criteria, 12 performance evidence requirements, 20 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.

How does Auditori generate an assessment tool for MEM18067?

Auditori pulls the current release of MEM18067 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.

Is the first assessment tool really free?

Yes. Every new account includes one free credit — enough to generate the complete assessment tool for MEM18067 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing MEM18067 assessment instead of generating a new one?

Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of MEM18067, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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