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vfd

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  1. 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.
  2. joel89

    VFD on a lathe drive

    Hi all just looking at upgrading one of our lathe control panels, it is a poreba engine lathe the main motor is a 2 speed 3 phase induction motor, 1480rpm- 45kw. 780rpm-29kw the forward and reverse chuck rotation is energised via electromechanical drive clutches, whilst looking at what to do...
  3. andyb

    VFD Volt Drop Question

    I need a help from those on here with experience with 3 phase motors and VFDs. I have been asked to install the cable to supply a couple of pumps that will be controlled using a variable frequency drive. As they are submersible pumps they come pre wired with 12 core 2.5 rubber cable, 10 cores...
  4. S

    Stalled motor and volt free contacts on VFD.

    The motor has stalled (trip name StLL) after someone tightened/overtightened screws on flange mounted gearbox. Volt free contacts on Parker SDD 650 frame 1 were still closed (assigned to close only when motor is running). They should open cause they are in series with the contactor coil of...
  5. S

    Pilot lights for VFD

    Hello. Seems like I can't find any circuit diagrams on the internet about connecting VFD (Parker SSD 650) pilot lights. I need just one pilot light which starts to glow when the motor shaft is rotating. We have some panels with the same VFD's, there are contactors on the output side (it's not...
  6. happysteve

    VFD for old Myford ML8 wood lathe (0.5HP, single phase)

    Eh up :) My dad (retired joiner) has been gifted an old ('40s or '50s) Myford ML8 wood lathe. (Made in the town where I now live). It comes with what he thinks is (but may not be) the original motor; from the name plate (details read out to me over the phone, haven't seen it): English...
  7. R

    Help with wiring up a contactor and stop switch to a VFD

    Morning, I'm building a small control panel for a VFD, The VFD has 24v lines for motor run and stop, these use a momentary switch. The stop button provides a braking function for the motor through the VFD. I want to connect a contactor between the VFD and motor to safely isolate the motor. I...
  8. K

    VFD issues

    I have a vfd that is giving me some ramping problems in PID control. It was running smoothly and as it was reaching it's setpoint went into high current overload. After some wire switching and moving to local control it ran smoothly at a 40hz and above. At 60hz current readings using a fluke...
  9. G

    VFD books?

    Hi, Can anyone recommend a good book on VFD's? Ideally, I would like it to contain info on both the control and power side of things.

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