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  1. Hello Everyone... I got a project of pumping station... Need your help to fulfill client requirements through PLC logic...   #System# There are 6 pumps, every pump is Controlled by Individual VFD, and all 6 VFDs are in Communication with PLC. Output header is common for all pumps, and a Pressure Transmitter is connected at output header...   #Logic Requirements# Now when we start sequence in auto, the least run hour vfd should start first and increase the frequency slowly to maintain the pressure setpoint, now if vfd1 at 50hz and pressure is lower then the SP next vfd according to run hour should start and and increase frequency slowly, afterwords 3rd vfd according to runhour and so on untill pressure match SP, then maintain the pressure of header... If pressure increases above the setpoint, last started vfd should reduce rpm and shut down first and then second last started to shutdown and so on... And client also need enable-disbale logic, if they mark a pump disable then that pump should not start... Can you help me out and suggest anything, or provide some sample backups or documents ?
  2. Hi All, need some advice on a system to Alternate Starting of 2 pumps:  1. When StartP is pressed, Pump No.1 would start. 2. By pressing StopP, it will stop the running pump. 3. When StartP is depressed again, the Alternate Pump will kick in. Am looking at using: I0.1 - NO Push Button I0.2 - NC Push Button Q0.1 Pump 1 Q0.2 Pump 1 to set it up.. Any kind advice how may i set this up? Any advice will be deeply appreciated. TYIA!  
  3. Pumps controlled with counter

    I need som help and suggestion how i can control 2 pumps that shall go 10 times each?i have 2 level sensors that is giving it the start and stop,and pump1 shall start 10 times,then pump2 shall start 10 times.Can i use CNT and how is the best smooth way to do it?   thx
  4. Hello Everyone, We made a video about the simple explanation of the settings of the abb acq580 driver in the stage of water level control in multi-motor dirty and clean water cycle systems using the automatic commissioning feature of the ABB ACQ580 driver. Your comments and feedbacks are very important for us.  Video: Youtube   (For those who can't see the link) The video in our language(Turkish) but we put english subtitles. If you got any question, feel free to ask.  Thank you.
  5. PID regulation PT

    Hello   Does someone have a good way to control pressure using PID in cx-programmer? I got two pumps and one PT(4-20mA) Half the year only one pump need`s to run (about 3bar)  but in the season (i work in a fabric) two pumps need to be running (about 4bar needed) except in the night. I`m going to use HMI for adjusting the setpoint so there is no need for any clock/date for this to change itself. The question is how to get one of the pumps to shut down when the need for pressure is not so high. And get the pumps to change "main" pump sometimes so one pump is not running all the time.   Hope this was understandable    
  6. Hello, attached below is what i have attached above is what i have done so far for the ladder logic when controlling a pump stroke but i cant seem to get it to work  Im using an OMRON CP1LE-EL with CX programmer i use an analog extension board and its only capable for 1 analog device which is my pump  is there something wrong with my ladder logic? pls help    sorry if its lacking in information i'm new to this so just go ahead and ask me what u need to help me out