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give answer in 2 step with explanation at the end of each step and final answer at the end:Automation Procedure: An injection molding process is being automated to measure the weight of molded parts and to automatically reject short shots. The order of operations with necessary timing will proceed as follows: © T=0sec— Mold reaches mold open limit (triggers automation cycle) © T=2sec Part jected and received by robot EOAT © T=7sec— EOAT de-gates parts, drops runner in grinder, and places parts on conveyer belt T= 10sec — Conveyer belt advances forward dropping part onto weighing scale © T= 15 sec — Scale weighs parts © T=20 sec Part sorting initiated. © Ifweight is over setpoint valve for full shot air jet blows parts into inventory bin. © Ifweight is below setpoint valve for full shot —air jet blows parts into scrap bin. © T=30 sec — Molding cycle completes, and mold reaches mold open limit triggering next automation cycle. Design Specifications: «Assume that you are wiring this onto the Sumitomo injection molding machine using the relays on the robot interface board as shown in the figure below. The machine controls these relay contacts and closes them at the corresponding point in the molding cycle. «Assume that you are wiring to an Arlyn scale with setpoint control using the provided relay wiring. The scale will close these relay contacts based on programmed weight setpoint. «Assume that you are using an Allen Bradley PLC identical to the ones used during lab. After 10 defective cycles a buzzer should be activated to alert the operator. Question 1: Design the pneumatic circuit required for part sorting and explain the operation. Question #2: Design the electrical circuit(s) that connects the machine, the PLC, and the scale. Assume that all the inputs and outputs to and from the PLC should be 24VDC. Question #3: Design the PLC ladder logic that will initiate on the Mold Open Limit trigger, delay until the conveyor has dropped the parts onto the scale and then allow time for weighing. Subsequently, a 5 second air jet will either send the parts to the inventory bin while illuminating a green light, or the scrap bin while illuminating a red light. All scrap parts will be counted, and the program will initiate a buzzer when the defect count reaches 10 bad cycles and pause the injection ‘molding machine by prohibiting mold close. Submission: Model your solution in Automation Studio and document the operation with images of the simulation and descriptions thereof. Include the electrical circuits, pneumatic circuits, and PLC ladder logic. Substitute manual switches for machine-controlled relay contacts. Recommended Reading: An excerpt from the Sumitomo manual is provided, which covers how to interface external equipment to the molding machine. You will need this to find how to send a signal back to the machine to interrupt the molding cycle.

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give answer in 2 step with explanation at the end of each step and final answer at the end:Uploaded ImageAutomation Procedure: An injection molding process is being automated to measure the weight of molded parts and to automatically reject short shots. The order of operations with necessary timing will proceed as follows: © T=0sec— Mold reaches mold open limit (triggers automation cycle) © T=2sec Part jected and received by robot EOAT © T=7sec— EOAT de-gates parts, drops runner in grinder, and places parts on conveyer belt T= 10sec — Conveyer belt advances forward dropping part onto weighing scale © T= 15 sec — Scale weighs parts © T=20 sec Part sorting initiated. © Ifweight is over setpoint valve for full shot air jet blows parts into inventory bin. © Ifweight is below setpoint valve for full shot —air jet blows parts into scrap bin. © T=30 sec — Molding cycle completes, and mold reaches mold open limit triggering next automation cycle. Design Specifications: «Assume that you are wiring this onto the Sumitomo injection molding machine using the relays on the robot interface board as shown in the figure below. The machine controls these relay contacts and closes them at the corresponding point in the molding cycle. «Assume that you are wiring to an Arlyn scale with setpoint control using the provided relay wiring. The scale will close these relay contacts based on programmed weight setpoint. «Assume that you are using an Allen Bradley PLC identical to the ones used during lab. After 10 defective cycles a buzzer should be activated to alert the operator. Question 1: Design the pneumatic circuit required for part sorting and explain the operation. Question #2: Design the electrical circuit(s) that connects the machine, the PLC, and the scale. Assume that all the inputs and outputs to and from the PLC should be 24VDC. Question #3: Design the PLC ladder logic that will initiate on the Mold Open Limit trigger, delay until the conveyor has dropped the parts onto the scale and then allow time for weighing. Subsequently, a 5 second air jet will either send the parts to the inventory bin while illuminating a green light, or the scrap bin while illuminating a red light. All scrap parts will be counted, and the program will initiate a buzzer when the defect count reaches 10 bad cycles and pause the injection ‘molding machine by prohibiting mold close. Submission: Model your solution in Automation Studio and document the operation with images of the simulation and descriptions thereof. Include the electrical circuits, pneumatic circuits, and PLC ladder logic. Substitute manual switches for machine-controlled relay contacts. Recommended Reading: An excerpt from the Sumitomo manual is provided, which covers how to interface external equipment to the molding machine. You will need this to find how to send a signal back to the machine to interrupt the molding cycle.

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Asked by: Rahul
Created at: 2025-12-10 07:02:24

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Certainly! Let’s answer **Question #2** in two steps, as requested. --- ## **Step 1: Identify System Components and Connections** **Explanation:** First, identify the components to be connected electrically: - **Sumitomo Machine Relays:** These provide dry contacts for signaling. - **Arlyn Scale:** Has a relay output that closes when the correct weight setpoint is met. - **PLC (Allen Bradley):** Receives inputs from the relays and controls outputs (solenoids, lights, buzzer). - **24VDC Power Supply:** All PLC I/O circuits use 24VDC. **Connections:** - **Inputs to PLC:** - Mold Open Limit Relay Contact (from injection molding machine) - Scale Setpoint Relay Contact (from Arlyn scale; indicates if part is good or scrap) - **Outputs from PLC:** - Air Jet Solenoid Valve (for sorting) - Green Light (inventory bin full part) - Red Light (scrap bin part) - Buzzer (defect count alarm) - Signal to mold machine (to interrupt cycle if needed) **Diagram (Textual):** ``` [Sumitomo Machine Relay Output] ------> [PLC Input 1] (Mold Open Limit) [Arlyn Scale Relay Output] ------------> [PLC Input 2] (Weight OK/Not OK) [PLC Output 1] -----------------------> [Air Jet Solenoid] [PLC Output 2] -----------------------> [Green Light] [PLC Output 3] -----------------------> [Red Light] [PLC Output 4] -----------------------> [Buzzer] [PLC Output 5] -----------------------> [Mold Interrupt Signal] ``` *(All I/O powered by 24VDC supply)* --- ## **Step 2: Draw/Explain the Electrical Circuit** **Explanation:** Each relay contact acts as a switch to the PLC input. The PLC outputs drive devices using 24VDC. - **PLC Inputs:** Wire one side of each relay contact to +24VDC, the other to the PLC input terminal. When the relay closes, the input receives 24VDC, registering as "ON" in the PLC. - **PLC Outputs:** The PLC output terminals (configured as sinking or sourcing, typically sourcing with Allen Bradley) are connected to one side of the device (e.g., solenoid, light, buzzer). The opposite side of each device connects to V (ground). When the PLC output turns "ON," it completes the circuit, energizing the device. **Example (for Input):** ``` +24VDC ---[Relay Contact]--- PLC Input Terminal ``` **Example (for Output):** ``` PLC Output Terminal ---[Device: Solenoid/Light/Buzzer]--- VDC ``` **Safety Note:** Include appropriate fuses and circuit protection for all outputs, especially inductive loads like solenoids. --- ## **Final Answer** The electrical circuit consists of relay contacts from the Sumitomo machine and Arlyn scale wired to the PLC inputs, all powered by 24VDC. The PLC outputs control the air jet, indicator lights, buzzer, and mold interrupt using 24VDC. Each relay contact is treated as a digital input, and each device is energized through the PLC outputs, completing the necessary automation connections for the system.

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This is AI generated Response.
Asked by: Rahul
Created at: 2025-12-10 07:03:04

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# Answer to Question #2: Electrical Circuit Design ## **Step 1: Identify System Components and Connections** ### **Explanation** In this step, we will identify and outline the necessary components and their connections: - **Components:** - **Sumitomo Injection Molding Machine:** Provides relay outputs for machine status. - **Arlyn Scale:** Outputs a relay signal based on weight setpoint. - **Allen Bradley PLC:** Controls inputs and outputs for the automation process. - **24VDC Power Supply:** Supplies power to all components. ### **Connections** - **Inputs to PLC:** - **Mold Open Limit Relay:** Connected to the PLC to detect when the mold opens. - **Scale Setpoint Relay:** Connected to the PLC to determine if the part is acceptable or defective. - **Outputs from PLC:** - **Air Jet Solenoid Valve:** Activates to sort parts. - **Green Light:** Indicates parts are in the inventory bin. - **Red Light:** Indicates parts are sent to the scrap bin. - **Buzzer:** Alerts when 10 defective parts are counted. - **Mold Interrupt Signal:** Stops the injection molding cycle if necessary. ### **Diagram (Textual Representation)** ``` [Sumitomo Machine Relay Output] ------> [PLC Input 1] (Mold Open Limit) [Arlyn Scale Relay Output] ------------> [PLC Input 2] (Weight OK/Not OK) [PLC Output 1] -----------------------> [Air Jet Solenoid] [PLC Output 2] -----------------------> [Green Light] [PLC Output 3] -----------------------> [Red Light] [PLC Output 4] -----------------------> [Buzzer] [PLC Output 5] -----------------------> [Mold Interrupt Signal] ``` *(All inputs and outputs are powered by a 24VDC supply)* --- ## **Step 2: Draw/Explain the Electrical Circuit** ### **Explanation** This step involves detailing how to wire the components to the PLC. - **PLC Inputs:** Each relay output from the Sumitomo Machine and Arlyn Scale is wired to the corresponding PLC input. - Connect one side of each relay contact to +24VDC. - Connect the other side to the PLC input terminal to detect when the contact is closed. - **PLC Outputs:** The PLC outputs control various devices: - Connect the PLC output terminal to one side of the device (solenoid, light, buzzer). - Connect the opposite side of each device to ground (0VDC). When the PLC output is activated, it completes the circuit, energizing the device. ### **Example Wiring** - **For Input Wiring:** ``` +24VDC ---[Relay Contact from Machine]--- PLC Input Terminal ``` - **For Output Wiring:** ``` PLC Output Terminal ---[Device: Solenoid/Light/Buzzer]--- Ground (0V) ``` ### **Safety Consideration** Ensure to include appropriate fuses and circuit protection for all outputs, especially for inductive loads like solenoids, to prevent damage and ensure safety. --- ## **Final Answer** The electrical circuit design connects the Sumitomo machine and Arlyn scale to the Allen Bradley PLC, all powered by a 24VDC supply. Each relay contact serves as a digital input to the PLC, while the outputs control sorting mechanisms, indicator lights, and alarms. The circuit design ensures a reliable automation process for the injection molding operation.

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