Mechatronics Technology  ·  Level 6
Mechatronic Programming
Chapter 5: Apply sustainable and energy-efficient practices in PLC systems
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Chapter Practical Activities

Practical 1: Program energy-saving modes in a PLC system for low-demand periods

Mechatronics Technology · Level 6
Mechatronic Programming
PRACTICAL ASSESSMENT
TIME: 4 HOURS
⬇ PDFCandidate Instructions (Candidate Tool)

Type: Individual

INSTRUCTIONS TO CANDIDATE:
1.  You are required to perform the following task:
i.  Program a PLC energy-saving mode system to reduce power consumption during low-demand periods with inputs from two proximity sensors and control two indicator bulbs as per the provided ladder logic algorithm.
2.  You have been provided with the following resources for the practical task:
Tools & EquipmentMaterials
Side CutterPush Button (N.O green)
Screw DriversCable (Red, Black, Green) 1.5 mm Single core
HammerProximity Sensor (N.O Inductive)
MultimeterIndicator Bulb 75W, 240Vac
Bulb Holders
Controller (PLC) 12/24 Vdc
DIN Rail
Mini Trunking
Tuck Nails
Equipment Labels
Power Supply 12/24 Vdc
Power Supply 240V AC
Installation Board
Personal Protective Equipment (Overall/Dust Coat, Safety Boots)
⬇ PDFResources Required (Cutting List)
S/NItemQuantity
1Push Button (N.O green)1 Pc per Candidate
2Cable (Red, Black, Green) 1.5 mm Single core5 m per Candidate
3Proximity Sensor (N.O Inductive)2 Pcs per Candidate
4Indicator Bulb 75W, 240Vac2 Pcs per Candidate
5Bulb Holders2 Pcs per Candidate
6Controller (PLC) 12/24 Vdc1 Pc per Candidate
7DIN Rail 15 cm1 Pc per Candidate
8Mini Trunking 1 m length1 Pc per Candidate
9Tuck Nails10 Pcs per Candidate
10Equipment Labels5 Pcs per Candidate
11Multimeter1 Pc per Candidate
12Power Supply 12/24 Vdc1 Pc per Candidate
13Power Supply 240V AC1 Pc per Candidate
14Installation Board 1 m x 60 cm1 Pc per Candidate
15Personal Protective Equipment (Overall/Dust Coat, Safety Boots)1 set per Candidate
16Side Cutter1 Pc per Candidate
17Screw Drivers (Flat and Phillips)1 set per Candidate
18Hammer1 Pc per Candidate
⬇ PDFAssessor Guide
Items to be EvaluatedMarks AvailableMarks ObtainedComments
TASK 1: Install and wire the PLC energy-saving system
Wore personal protective gear: overall/dust coat and safety boots
(Award 1 mark each)
2
Observed electrical safety rules: disconnected from mains before wiring
(Award 2 marks)
2
Installed components correctly: fixed firmly and level (PLC, sensors, bulbs, bulb holders)
(Award 1 mark each)
4
Terminated cables correctly: firm, folded, not nicked
(Award 2 marks)
2
Connected PLC inputs and outputs correctly
(Award 1 mark each for push button, two sensors, two bulbs)
4
Used tools correctly: side cutter, screwdrivers, hammer
(Award 1 mark each)
3
Tested wiring and connections with multimeter
(Award 3 marks)
3
Powered the system correctly without faults
(Award 2 marks)
2
Sub-Total22
TASK 2: Develop the PLC program for energy-saving modes
Developed I/O distribution list with correct assignments
(Award 3 marks)
3
Opened programming software and started a new project
(Award 2 marks)
2
Programmed logic to activate energy-saving modes during low-demand periods based on sensor inputs
(Award 8 marks for correct ladder diagram)
8
Documented code clearly indicating function of each rung
(Award 2 marks)
2
Debugged and simulated program successfully using PLC simulation tools
(Award 3 marks)
3
Set PLC to programming mode before downloading
(Award 2 marks)
2
Downloaded program to PLC successfully
(Award 3 marks)
3
Set PLC to running mode after program download
(Award 1 mark)
1
Sub-Total24
TASK 3: Test and operate the energy-saving PLC system
Correctly powered the system
(Award 1 mark)
1
Tested system operation: pushbutton starts system
(Award 1 mark)
1
Sensor 1 activates indicator bulb 1 for 10 seconds during high demand
(Award 3 marks)
3
System switches to energy-saving mode: sensor 2 activates indicator bulb 2 during low-demand periods
(Award 3 marks)
3
Indicator bulb 2 remains on until object is removed
(Award 2 marks)
2
Disconnected components safely following standard procedures
(Award 1 mark)
1
Stored tools, components, and accessories properly
(Award 1 mark)
1
Cleaned the work area after completion
(Award 1 mark)
1
Sub-Total13
PRODUCT CHECKLIST
Installed system functions correctly: wiring, component placement, and connections as per specifications
(Award up to 5 marks for correct installation and wiring quality)
5
PLC program meets energy-saving mode logic requirements and documented clearly
(Award up to 7 marks for correct program and documentation)
7
System operates as per specification: energy-saving modes activate correctly with sensor inputs
(Award up to 8 marks for correct system operation and mode switching)
8
Sub-Total20
GRAND TOTAL79
ASSESSMENT OUTCOME:   ☐ Competent    ☐ Not Yet Competent (competent if at least 50%)

Practical 2: Implement sensor-based motor control for energy efficiency

Mechatronics Technology · Level 6
Mechatronic Programming
PRACTICAL ASSESSMENT
TIME: 4 HOURS
⬇ PDFCandidate Instructions (Candidate Tool)

Type: Individual

INSTRUCTIONS TO CANDIDATE:
1.  You are required to perform the following task:
i.  Install and program a sensor-based motor control system on the installation board measuring 1000mm x 1000mm to reduce energy consumption.
2.  You have been provided with the following resources for the practical task:
Tools & EquipmentMaterials
Side cutterN.O push button green
Screw drivers (flat and star)Proximity sensor N.O inductive
HammerIndicator bulb 75W 240Vac
Multi meterBulb holder
PLC controller 12/24V DC
DIN rail 15 cm
Mini trunking 1 m length
Installation board 1 m x 1 m
Cable red, black, green 1.5 mm single core
Power supply 12/24 V DC
Power supply 240 V AC
Personal protective equipment overall/dust coat
Personal protective equipment safety boots
⬇ PDFResources Required (Cutting List)
S/NItemQuantity
1N.O push button green1 Pc per Candidate
2Proximity sensor N.O inductive2 Pcs per Candidate
3Indicator bulb 75W 240Vac2 Pcs per Candidate
4Bulb holder2 Pcs per Candidate
5PLC controller 12/24V DC1 Pc per Candidate
6DIN rail 15 cm1 Pc per Candidate
7Mini trunking 1 m length1 Pc per Candidate
8Installation board 1 m x 1 m1 Pc per Candidate
9Cable red, black, green 1.5 mm single core5 m per Candidate
10Power supply 12/24 V DC1 Pc per Candidate
11Power supply 240 V AC1 Pc per Candidate
12Multi meter1 Pc per Candidate
13Side cutter1 Pc per Candidate
14Screw drivers (flat and star)1 set per Candidate
15Hammer1 Pc per Candidate
16Personal protective equipment overall/dust coat1 set per Candidate
17Personal protective equipment safety boots1 pair per Candidate
⬇ PDFAssessor Guide
Items to be EvaluatedMarks AvailableMarks ObtainedComments
TASK 1: Installation and Electrical Connections
Wore personal protective equipment: overall/dust coat and safety boots
(Award 1 mark each for overall/dust coat and safety boots)
2
Observed electrical safety rules: disconnected mains before wiring
(Award 2 marks for proper safety observation)
2
Used correct tools for wiring: side cutter, screwdrivers, multi meter
(Award 1 mark each for correct tool usage)
3
Installed components on installation board: fixed firmly and level
(Award 3 marks for proper fixing of components)
3
Terminated cables correctly: firm, folded, no nicks
(Award 3 marks for proper cable termination)
3
Connected PLC inputs and outputs correctly as per specification
(Award 1 mark each for correct connection of pushbutton, sensors, bulbs, and PLC terminals)
4
Sub-Total17
TASK 2: PLC Programming and Simulation
Developed I/O distribution list for PLC inputs and outputs
(Award 2 marks for correct I/O list)
2
Opened programming software and started new project
(Award 2 marks for correct software usage and project setup)
2
Programmed ladder logic to control motor operation based on sensor inputs to reduce energy consumption
(Award 8 marks for correct ladder logic meeting specifications)
8
Documented code with comments explaining each rung
(Award 2 marks for clear documentation)
2
Simulated and debugged program using PLC simulator
(Award 4 marks for successful simulation and debugging)
4
Sub-Total18
TASK 3: System Testing and Operation
Connected programming cable and uploaded program to PLC
(Award 1 mark each for cable connection, communication, and upload)
3
Powered the system correctly
(Award 1 mark for correct powering procedure)
1
Tested system operation: pushbutton starts system, sensor 1 activates indicator bulb 1 for 5 seconds, sensor 2 activates indicator bulb 2 until object removal
(Award 1 mark each for correct operation of pushbutton, sensor 1, bulb 1 timing, sensor 2, and bulb 2 operation)
5
Disconnected components following standard operating procedures
(Award 1 mark for correct disconnection)
1
Properly stored tools, components, and cleaned work area
(Award 1 mark each for storage and cleaning)
2
Sub-Total12
PRODUCT CHECKLIST
Installed system on 1000mm x 1000mm board with components firmly fixed and cables neatly terminated
(Award 4 marks for neat, firm installation matching dimensions)
4
PLC program correctly implements sensor-based motor control to reduce energy consumption
(Award 6 marks for functional program meeting task requirements)
6
Sub-Total10
GRAND TOTAL57
ASSESSMENT OUTCOME:   ☐ Competent    ☐ Not Yet Competent (competent if at least 50%)
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