3/7/2021 1:20 PM | |
Joined: 2/22/2008 Last visit: 8/6/2024 Posts: 2698 Rating:
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See attachment for monitoring energy and power of your ABB meter. Use an actual Logo8 12/24RCE, then you are sure to have fast counter inputs. This is my preferred universal model to have 4 analog inputs, 4 fast counter inputs (max. 5kHz) and relay outputs for universal usage. I think, you want to use an output from your ABB meter, programmed to 200 impulses per kWh. Just connect this signal to I3 of the Logo controller and look on to the display. The impulses are counted with B004 up to fully kWh. You can set the impulses per kWh in B001 P1/V1 or directly with the display. The fully kWh are counted with B002 up to 1000, B003 counts the MWh. You see, the counters are cascaded. If you don't need more than 999999 kWh at all, then you can delete B003 and M2. The impulse input is also connected to a digital threshold trigger, this is a freqency meter and usable to calculate the power. See arithmetic operations to understand the calculation. 3600 is the value for seconds per hours. There are 2 tips for you to increase the accuracy, resolution or functionality. 1. Increase the impulses per kWh to a higher value, e.g. 18000 2. Your ABB meter also can communicate with Modbus RTU over RS485 connection. If you buy a converter Modbus RTU to Modbus TCP/IP, then you have much more informations in the Logo controller for monitoring and display. Regards, Scorp AttachmentkWh counter.zip (730 Downloads) |
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3/7/2021 4:29 PM | |
Joined: 2/22/2008 Last visit: 8/6/2024 Posts: 2698 Rating:
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Try the attached version, the problem is, that you don't have Logosoft V8.3 and some file formats are not compatible. I have saved it as V8.1/V8.2 now. If this also not work, then tell me, which Logosoft version you have. For fast counter inputs you need I3 to I6 of CPU module and only a cpu with only DC24V or DC12/24V can be used, e.g. not a AC/DC24V or AC230V version. The next step would be, what you want to display at all, because a newer Logo8 is possible to communicate over Modbus TCP/IP. Regards, Scorp AttachmentkWh counter.zip (663 Downloads) |
3/7/2021 8:39 PM | |
Posts: 22 Rating:
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Hi, I am having 8.2 version. Right now I can open that you have sent. I will try to implement it. Thanks a lot. Vratislav |
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