No. It won't work. Try connecting single phase to the 3 phase VFD, many will work that way. Or you may get a phase loss error, but at least the magic smoke will stay in.
I found a VFD in a discarded machine at the scrapyard. I thought it was a 1 to 3 phase inverter but after closer inspection (it was dark!) it turns out it's a 3 to 3 phase VFD. I don't have 3 phase power at home but I DO have...a 1 to 3 phase VFD I use to run the spindle motor on my cnc. I want to test if the 3-3 phase still works. Can I hook up the 1-3 to the 3-3 with the right frequency settings without releasing the blue smoke? I don't intent to put any load on the drive, or at worst my unladen spindle motor at a low rpm.
3-3: Xtravert X716
1-3: one of those no-brand Chinese things, 2.2kW
I've posted the wiring diagram of the Xtravert below
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No. It won't work. Try connecting single phase to the 3 phase VFD, many will work that way. Or you may get a phase loss error, but at least the magic smoke will stay in.
Jim Dawson
Sandy, Oregon, USA
All VFD Drives 3Phase can be run on single Phase 240v up to the Max supply Amperage you have available from your supply, Note you have to have the correct input Power connection from the manufacturers manual
No you can not run a VFD Drive with another VFD Drive it does not output a 3Ph sine wave the output is only suitable to be used for a 3Phase AC Motor
Mactec54
Thanks for the replies guys. What would be the "correct" way to wire 1 to three phase? Should I just run the 1 phase to L1 and L2 and split the L2 connection to L3, or do I only connect L1 and L2?
It's an Xtravert 716. 3 phase 400v input, with an "actual" input of 200-480V
here's the manual. http://www.sigi-elect.si/sites/defau...204201196e.pdf
Ok, with L1 and L2 connected, it turns on but I get a F22 fault. According to the manual:
"Fault22 EXT TRIP
DetailExternal Trip; External circuit (Terminal T10) has operated.
Sense level +12Vdc
Possible cause Operator, PLC, or external circuitry intervention.
ActionCheck external circuitry."
So I'm guessing "external circuitry" is the issue here, i.e., missing phase. So next course of action is to bridge L1 and L3?
*edit* I've tried bridging L1 and L3 but I get the same F22 error
Last edited by metiz; 02-09-2020 at 11:06 AM.
Would it be safe to try L1 and L3, not connecting L2?
No you should do a Factory reset this may put all the Parameters back to the original Default a missing Phase will tell you by using a different Fault the drive has been configured for something else and it is no longer connected so it is showing you the fault it could of been a Safety circuit that now is missing
Mactec54
Good call! Thanks, I'll look into it.
I've managed to reinitialize the unit (same as reset) but the fault persists, even with L1 and L3 bridged again
*edit* I've found a reset menu in the manual specifically meant to reset errors - maybe that's the ticket. I'll try tomorrow.
*edit2* nm, doesn't work either
Last edited by metiz; 02-09-2020 at 06:47 PM.
Clearing the Faults will not do a Factory Reset
No you have to do a factory Reset there will be a Parameter that you have to set to do this Reset, pressing Reset will not change anything
As I said you don't have a Phase missing Fault so should not have used a bridged ( Jumper ) L1 to L3 you only do this if there is a missing Phase Fault
The VFD Drive may also have a Problem this may be why it was in the junk yard, cheaper to buy a new one than repair a drive like this in most cases
Mactec54
Mactec54
According to the manual "If an external trip feature is not required, this input must be closed (linked to +24V).Provides a dedicated input to trip the Xtravert and immediately disables the output.Do not exceed 24Vdc on this input" and below that "TERMINAL T11 +24V SUPPLY" So can I just bridge T10 with T11 (with a resistor)?
The output frequency range is 0-120Hz
Success! I bridged 10 and 11 with a 2k resistor and it does not show the error anymore. I currently don't have a load attached to the unit. When I press start, nothing happens. Is a load required for the unit to turn on?
Yes that is one way to do it, is easier to just change the Parameter for that terminal so it is not used
No load required, if it has a pot you can up and down the pot or arrow keys to change the speed, you won't be able to measure the Output with a regular meter
But you must set the Hz Parameters for the motor if you attach one
Mactec54
There's no pot to set. When I press "run" nothing happens. I suppose I could connect my 2.2kW chinesium motor and see what happens. The motor is rated to 400hz, the unit can supply up to 120hz. Can I be stupid and just hook it up with clean factory settings and see what happens or do I actually have to, you know, read the manual to see what settings I need?