Greetings PLCtalk community! It’s been a while since my last visit. I'm seeking your insights on an ongoing project. I’m in the process of creating a control panel for a specialized application that involves two motors and six pilot valves. Everything will be managed through a touch panel mounted on the door of the control panel, with an emergency stop button conveniently located just below it. Additionally, the pilot valves will be housed in a separate, smaller panel. I've included links for your reference: - Power Circuit: [Power Circuit Diagram](https://imgur.com/1Nve30J) - Control Circuit: [Control Circuit Diagram](https://imgur.com/a/N7eiKu0) In my design process (and trusting in my drafting skills), I have one question that has me puzzled: should I connect the PLC output relay to a safety relay, or should it be the other way around—with the 24VDC feeding the PLC Qx and then connecting to AZ1 terminals 13 and 14? I appreciate your feedback!
Your safety features seem outdated for a product manufactured in this century. I sincerely hope that the motor isn't engaging in any activities that could pose a risk to your well-being.
Geoff White expressed concerns about the safety of this modern equipment, stating, "Your safety features are quite questionable for something made in this century. I really hope that motor isn't posing any serious risks." If you're looking for suggestions, could you recommend something? The equipment in question is a small, enclosed cone crusher designed for processing rock or ore.
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Answer: - The control panel is designed to manage a specialized application involving two motors and six pilot valves. Control is facilitated through a touch panel mounted on the panel door, with an emergency stop button for safety.
Answer: - The pilot valves are housed in a separate, smaller panel from the main control panel.
Answer: - The touch panel serves as the interface for operating the control system, allowing users to manage the motors and valves directly from the panel door.
Answer: - An emergency stop button is located just below the touch panel to quickly halt operations in case of an emergency.
Answer: - There is a query regarding whether the PLC output relay should be connected to a safety relay or vice versa. One approach is to connect the 24VDC to the PLC Qx and then to the safety relay terminals AZ1 13 and 14. Community feedback is sought on the best practice for this connection.
Answer: - Yes,
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