Question 4 1. State the four programming languages described in the IEC 61131-3 standard. (4) 2. A simple motor latching circuit has the following I/O: Inputs: StartPB %10.0 N.O. momentary action push button StopPB %10.1 N.C. momentary action push button Overload %10.2 N.C. K1 Aux %10.3 N.O. Auxiliary feedback contact from motor. Outputs: K1 Coil %Q0.0 RunLamp %Q0.1 Motor Contactor Coil K1 Motor Run Indicating Lamp StopLamp %Q0.2 Motor Stopped Indicating Lamp Sketch a program to control the motor using any two of the IEC61131-3 languages. Include a latch mechanism. You must use all the inputs and outputs. Include both the label and memory addresses on your program. (8) 3. A Human Machine Interface (HMI) must be added to a Programmable Logic Controller (PLC) that controls a conveyor. The PLC program is shown on Figure 4a. The machine operator must be able to start and stop the conveyor via the HMI and be aware of the status of the conveyor i.e., running/stopped. Network 1: Conveyor Contactor Coil Start Stop Conveyor control logic including running / stopped indication %0.00 "StartPB HH 20.0 *Conveyor %0.1 "StopPB* HH NOT Figure 4a Conveyor Ladder Diagram. 7 %00.0 *Conveyor H 20.1 "RunLED* Q0.2 "StopLED H Explain how the HMI can be configured to carry out the required options. Sketch any changes required to the PLC programme. (6) (7) Total Marks [25]

Question 4 1. State the four programming languages described in the IEC 61131-3 standard. (4) 2. A simple motor latching circuit has the following I/O: Inputs: StartPB %10.0 N.O. momentary action push button StopPB %10.1 N.C. momentary action push button Overload %10.2 N.C. K1 Aux %10.3 N.O. Auxiliary feedback contact from motor. Outputs: K1 Coil %Q0.0 RunLamp %Q0.1 Motor Contactor Coil K1 Motor Run Indicating Lamp StopLamp %Q0.2 Motor Stopped Indicating Lamp Sketch a program to control the motor using any two of the IEC61131-3 languages. Include a latch mechanism. You must use all the inputs and outputs. Include both the label and memory addresses on your program. (8) 3. A Human Machine Interface (HMI) must be added to a Programmable Logic Controller (PLC) that controls a conveyor. The PLC program is shown on Figure 4a. The machine operator must be able to start and stop the conveyor via the HMI and be aware of the status of the conveyor i.e., running/stopped. Network 1: Conveyor Contactor Coil Start Stop Conveyor control logic including running / stopped indication %0.00 "StartPB HH 20.0 Conveyor %0.1 "StopPB HH NOT Figure 4a Conveyor Ladder Diagram. 7 %00.0 Conveyor H 20.1 "RunLED Q0.2 "StopLED H Explain how the HMI can be configured to carry out the required options. Sketch any changes required to the PLC programme. (6) (7) Total Marks [25]

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter11: Float Switches

Section: Chapter Questions

Problem 7SQ

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