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Electric Actuator Valve ON/OFF

Created by: kwatkinsbrandt at: 1/15/2021 12:42 AM (4 Replies)

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1/15/2021 12:42 AM	Rate (0)
kwatkinsbrandt Posts: 11 Rating: (0)	Hi Everyone, New this forum and new to PLCs! I’ve done this project before but using an ADU208 USB Relay Device but want to move toward a PLC and assumed it would be similar in operation. I have the LOGO! 24RCE PLC. I have an electric actuator valve (Hayward HRCK2AK1 with a local and remote control station) with a 3-way valve, that way I have one input for water coming in and two outputs (one for total water and one for filtered water output). The ultimate goal is to be able to have the filtered signal on for 10 minutes at the beginning of every hour, then switch back to the total water signal. This will be operated on a ship so always in REMOTE mode via PLC. I’ve attached the valve wire diagram for reference. With the ADU the common was the power source, but the way I read the wiring diagram for the LOGO!, it is the neutral, could someone please let me know if I’m reading that correctly? I'd really like to not fry my PLC on the first go around. I assumed the following: Q1 position 1: common valve power source Q1 position 2: RUN CLOSED from valve position 4 Q2 position 1: common valve power source Q2 position 2: RUN OPEN from valve position 6 The voltage output of the valve when forced OPEN or forced CLOSED is ~200V while in motion and steady at 120V when valve has reached the fully open or fully closed position, therefore it should meet the specifications of <240VAC and 10A for the relay outputs and I will add a circuit breaker to be safe. Now for programming, I have the LOGO!Soft Comfort V8 program. I am assuming that based on the relays I can program to trigger the valve to open and close based on a timer? Does this all sound possible?! Thanks in advance for any input, I appreciate it! Cheers, Katie Attachment Wiring Diagrams.pdf (382 Downloads)
kwatkinsbrandt Posts: 11 Rating: (0)
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1/15/2021 3:40 AM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/13/2024 Posts: 34207 Rating: (4261)	You don't write which LOGO! (0BA6,0BA7, 0BA8 ?) do you exactly have. You wrote only that you LSC V8. If you have been using a USB device with contacts designed for 5 A, then the LOGO! can do it with 10 A. kwatkinsbrandt I assumed the following: Q1 position 1: common valve power source Q1 position 2: RUN CLOSED from valve position 4 Q2 position 1: common valve power source Q2 position 2: RUN OPEN from valve position 6 I don't understand your information above. The relays of the LOGO! are only make contacts, no changeover contacts. So they can only have 2 states: Open or closed. Or do you mean something else by position? Do you mean the terminals of the LOGO! outputs? For example: Q1 terminal 1: common valve power source Q1 terminal 2: RUN CLOSED from valve position 4 Q2 terminal 1: common valve power source Q2 terminal 2: RUN OPEN from valve position 6 Your wish: "The ultimate goal is to be able to have the filtered signal on for 10 minutes at the beginning of every hour, then switch back to the total water signal." is definitely with the LOGO! makeable.

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1/15/2021 5:24 PM	Rate (0)
kwatkinsbrandt Posts: 11 Rating: (0)	Hi ixo65, Thank you for the response! I have the LOGO! 0BA8 Let’s see if I can get my terminology straight, yes, I mean terminals when I say positions, so as you have written: For example: Q1 terminal 1: common valve power source Q1 terminal 2: RUN CLOSED from valve position 4 Q2 terminal 1: common valve power source Q2 terminal 2: RUN OPEN from valve position 6 With the wiring on the valve also translating position=terminal so: Q1 terminal 1: common valve power source Q1 terminal 2: RUN CLOSED from valve terminal 4 Q2 terminal 1: common valve power source Q2 terminal 2: RUN OPEN from valve terminal 6 Yes, that is my wish so I’m glad to hear that is possible. Seems like a relatively easy ask for the PLC by using the timer functions but I’m wondering if it is best to use the On-Delay and Off-Delay for each output or ON-/OFF- Delay for each output? I could see if this wasn’t timed properly the valve could get confused as to whether it should RUN OPEN (Q1) or RUN CLOSED (Q2) if there were overlapping signals? Thanks again!
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1/15/2021 5:46 PM	Rate (1)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/13/2024 Posts: 34207 Rating: (4261)	Here is a suggestion from me. A pulse generator is started with a start input, which changes in a ratio of 10 minutes on and 50 minutes off. A pause time has been inserted so that the valves have time to switch over. You can then set the value yourself. Attachment Valve_control_0BA8.Standard.zip (374 Downloads)

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This contribution was helpful to 1 thankful Users kwatkinsbrandt

1/15/2021 6:50 PM	Rate (0)
kwatkinsbrandt Posts: 11 Rating: (0)	Thank you so much, I'll give this a try, really appreciate it!
kwatkinsbrandt Posts: 11 Rating: (0)
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This contribution was helpful to 1 thankful Users ixo65

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