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  • Users: krsh
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  1. krsh

    Parameters for PF 700 and regen Unit

    Hello, I am using a PowerFlex 700 drive for a pump jack application on a 500V not grounded power network. I want to install a regenerative unit(Revkon SVC) for this drive and i want to know what parameters i need to change. I also need to know what is the simplest way to know how much energy is...
  2. krsh

    Problem with motor chokes for VSD

    Hello friends, I have a problem with a motor choke(code: VW3A5104, Schneider). It is installed on the output of a 15kW VSD(code: 6SE6400-2UE31-5DA1) on a 500V/50Hz network. The problem is that the motor choke becomes very hot when we run the pump(pump application) almost full speed(40Hz) and...
  3. krsh

    Frequency converter for Oil extraction

    Hello, Does anyone have documentation on VFD specifically for oil extraction. I heard that the difference between classic and this drives is on parameters assignment(you have an additional option for oil extraction)and i am interested in finding out more. Thank you.
  4. krsh

    Fan application

    Hello friends, Company bought a used fan from an abandoned factory which i was assigned to install in our factory. The problem is when i start the fan(DOL starting) the motor protection trips. The motor is a 3 phs, 5.5 kW 50 Hz 230/380, delta/star, 20.8/11.6 Amps which i connected in star and...
  5. krsh

    VFD break

    Dear colleagues, I design an application where railcars are positioned over a loading bunker with an electrical winch. The question is if i use a VFD do i need an electromagnetic break for the motor to stop the railcars or the VFD can meed this functionality too. The breake is used only to slow...
  6. krsh

    Speed reducer torque calculation

    Dear colleagues, I am a beginer in the field of mechanical engineering and i need to know what kind of gear i need to lift a 10 tons wheight if i use a 22 Kw / 750 rpm 8 pole electric motor. The application consists in a electrical winch that pulls rail cars to a loading bunker with...
  7. krsh

    S7 PLC and VFD

    Dear sir, I want to design a system whitch is using a S7 315-2DP CPU, MICROMASTER 440 and a Mobile Panel 170 to control the speed of a 22 KW motor which has a nominal speed of 1500rpm and is connected on a speed reducer with an output of 53rpm but i have some questions: 1.If i increase the...

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