vfd

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  1. G

    VFD -under volt at source fault

    So earlier this year I obtained a large machine with a couple of 3 phase motors in it, and the rest single phase. I bought a VFD, correctly wired it up, and while the machine ran with some functions, it also reported "undervolt at source" I had bought a VFD with a maximum output of 380 volts...
  2. arifpatelpduk

    UK Arif Patel Preston Dubai| Is wattage rating of a VFD split between 3 phases?

    Hello friends Myself Arif Patel and I am an Electrical engineer from Dubai. preston, UK.. I just wanted to Know, I've been asked to complete an electrical load list with the watts required for each phase of a 3Ph, 400A, 11kW VFD. The VFD is feeding two motors with a total load of 21A. How many...
  3. A

    Diagnosing overcurrent error on VFD

    I have a box powering three 3-phase motors off of one 240V single phase line, NEMA 10-30. In the picture you can see a wiring diagram. The original wiring I had was one box containing all those components. It would cause over-current errors on the right-side (1 HP) VFD when I didn't have fuses...
  4. G

    Learning to program a VFD

    So i have wired up my VFD, turned it on and all funstions appear to be running. So reading the instruction manual i get that i have to program each function to run the 3 phase machine i have, but i am a little confused. The VFD also has a manual configuration panel that is separate from the...
  5. J

    Vfd

    I've not worked with vfds before but have been asked to add an emergency stop button and a level sensor. Looking at the manual and reading other things online im little confused. For the emergency stop am I right in thinking i just want to break the control voltage 24v? So would i just put the...
  6. R

    Motor ID & VFD Selection

    I bought a fairly antique 20" Monarch bandsaw. It came with a gigantic (~16" diameter) 5HP electric motor. I'm not sure a bandsaw of this size needs this much motor, but since I have it, I'll try to use it. The motor appears to be 5HP 3Phase, and probably 1730RPM. It is old enough that I can't...
    • Rod Ango
    • Thread
    • antique motor very old vfd
    • Replies: 12
    • Forum: USA
  7. D

    How to choose proper VFD for our motor.

    My motor is 3phase induction motor of which has 3KW of output max. power and max. speed is 320RPM out put torque range is 80-120Nm So, which VFD is proper suitable for it, and how to choose it.
  8. C

    Looking for a VFD with good scaling for display.

    Evening, I currently use Rexroth VFD´s, but the scaling options are a bit sparse. Basically it has a multiplier that you can set from 0.1 to 100. For example on a pillar drill I added one to, I wanted the display to show RPM, but as the motor is geared down (for example 12:1), you only get...
  9. F

    VFD Single Phase in and out

    Hi there I preface this query with: I am an almost complete electrical novice. I need to control the speed, startup and slow down of a 2100W induction AC motor through a VFD. My workshop has ordinary Australian 240v single phase supply. I can find plenty of VFDs that convert single phase to 3...
  10. P

    VFD tripping breaker

    hey guys had to replace the VFD on my lathe. running off 240v single phase to 3 phase to control the motor in delta config. i wired the new vfd up as per the last one, which is a different brand. hooked up active and neutral, then the ground to the chassis screw, when plugged in instantly trips...
    • patrolin
    • Thread
    • ausie elec breaker tripping vfd
    • Replies: 2
    • Forum: Australia
  11. S

    what do these 380v wiring colours mean, I want to use with a 220v vfd. it may have had speed control

    Hello, I am a woodworker who has got a large old power feed, its 380v and i want someone to rewire to a 220v vfd for me, can someone please tell me what these old colour codes mean. I bought the machine in Scotland.I can't find any easy diagrams online.I think its a good few years old.Thank you...
  12. T

    Help me with inverter vfd to 3 phase motor

    Ac power supply 440V Inverter - Input 380-480V 50/60hz 11.2A Output 0-480V 8.5A 6.8kva 3.7Kw 3 phase motor- 2.2kW 50Hz Should i use delta or star connection? newguytoelectricity
  13. G

    Vfd for well pump

    Hey guys just wondering if anyone has ever built a VFD for a well pump using a pressure transmitter and a Allen Bradley drive. Maybe this isn’t even possible. Just curious. Thanks
  14. J

    New Lathe Motor - 1 Phase - DOL or 3 Phase - VFD?

    Hi All, A mate of mine recently acquired a rather nice wood turning lathe they'd like to get running out in their workshop. However he admits his workshop is rather old and while he's not bothered, I'm concerned about drawing too much current (I'm trying to convince him to get the wiring...
  15. Savdar1810

    3P VFD 1.5 KW motor conveyor

    Question for someone... I have a 3P 1.5kw motor gearbox on a 5meter conveyor driven by a 3.7kw omron VFD, Frequency is set at 70/80hz (required for needed speed on this existing drive train) and voltage going out to motor is something crazy like 470v between line and earth, Its way to high I'm...
  16. K

    How to remove wire form Parker VFD

    Hi Have a Parker Integrator 690 series AC VFD drive. cannot take the wires out of push terminals. Any ideas how to take the wires out? Tried screw driver etc but not sure how they will come out. Pic attached
  17. C

    Using an encoder to control a VFD.

    I need to use a rotary encoder to control the speed of a VFD, so if the line speed varies then the VFD also changes. I have no experience of this. Usually I use Rexroth drives (not Indramat). Can these use an encoder easily enough? Or can you recommend one and an encoder please! Thanks.
  18. joel89

    For Sale Schneider Altivar 312 2.2KW VFD

    brand new altivar 312 2.2kw 3 phase 380-500v variable frequency drive. Rrp £280 Asking £200 Ono
  19. D

    VFD controlled Pump relationship clarification

    We Know that when configured for scaler control, a VFD willadapt its switching modulation to ensure that when frequency is changed, motorterminal voltage will change hence the term Voltage frequency ratio. Similarly, if we look at the affinity laws for a centrifugalpump we see that a 10 %...
    • DM7.ENG
    • Thread
    • controlled current frequency led motor pump vfd
    • Replies: 12
    • Forum: UK Electrical Forum
  20. joel89

    Application for a VFD (Lathe Saddle)

    Hi, just wanting to put a VFD on a lathe rapid traverse saddle, anyhow ever done this and does it work ok? it is a poreba lathe 12metre bed 1.1kw 3ph induction motor.

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