Thread: VFD Question
Threaded View
-
14-01-2017 #1
I bought one of the 'cheap' Huanyang VFDs on Ebay some months back in preparation of me using this for Thor as a Spindle speed control mechanism. I did not buy the spindle at the time but had a 3 Phase Vacuum Pump motor I wanted to turn with it. I did get the motor to turn but it always ran hot which might be explained below.
The unit is a 4KW 5HP 380V unit which can take both single and three phase input.
Yesterday, I tried to use this unit to power a friend's new (secondhand) kneemill. We had some success but I later realised that the issues we were having were voltage related. I measured the output at 50HZ and saw no more than around 260V out. I checked the settings, I think parameter PD005 is max voltage, and this was set to 415V. I reduced it to 380V.
When the unit was running, it was reporting 380V although I was measuring 250V (on average).
What I now assume is that it will only make 380V if it has a suitable three phase incoming power. I had believed before this, that I would convert 220V single phase to 380V three phase with this unit. Should I be able to? Did I miss something? I believe the reason the pump motor ran hot was low voltage means higher current = heat.
Thanks
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
PSU question
By iforeman in forum General ElectronicsReplies: 6Last Post: 23-11-2016, 10:56 PM -
NEW MEMBER: Re my question
By oldwoodworker in forum New Member IntroductionsReplies: 32Last Post: 20-09-2013, 09:07 PM -
PSU question
By Dwayne Dibbley in forum General ElectronicsReplies: 16Last Post: 13-02-2013, 10:15 PM -
To usb,or not to usb,that is the question.
By Jumbo in forum General DiscussionReplies: 11Last Post: 17-10-2011, 09:21 PM -
question ...
By Wobblybootie in forum General DiscussionReplies: 6Last Post: 04-01-2010, 12:04 AM
Bookmarks