The hardwired level control system shown below in Figure 1a must be replaced by a PLCbased system.X124 V DCX2ºv13131113S1 E---K1-1S4K2-1K2-21.a.314SYSTEM ON14LOW LEVEL12PUMPSYSTEM14PUMP22NSENSORSTART PB1111S2 E---S51.a.412HIGH LEVEL12SYSTEMSENSORSTOP PB11S31.a.41213K1-2SYSTEM ON14MAX LEVELSENSORA1x1K1SYSTEM ONH1A2SYSTEM ONBLUEA1x1K2H2H3PUMPA2PUMP RUNx2GREENPUMP STOPREDFigure 1a: Water Tank Level Control Systema) Using the worksheets 1(a) and 1(b) sketch the PLC inputs and outputs schematicdiagrams respectively.(5)b) Write/Sketch a programme using an IEC61131-3 language to implement the previouslyhardwired logic.(10)c) The water level sensors are replaced by an analogue ultrasonic level transducer.Explain how this transducer would replace the 'low level' and 'high level' sensors. Includewhat changes will be required to the PLC software.(5)d) It is proposed to replace the push buttons and lamps with a touch screen HMI. Explainhow this can be achieved; include what changes would be required to the PLC program.(5)

the image and my knowledge of PLC systems.The image shows a hardwired level control system for a…

Answered: The hardwired level control system…

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter22: Sequence Control

Section: Chapter Questions

Problem 1SQ: Describe what is meant by sequence control.

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