Yes, you do. You'll need a VFD rates for 2.2Kw or larger.
Hi Everyone,
I'm new here, an hobbyist with a chinese cnc 6040 with prt 1500w vfd. I've been making windsurfing fins from g11 and have run into a spot of strife. I recently ran into the holding mounts, not once but twice and noticed that now the spindle now has an unusual noise at a certain rev. I'm going to say that I've done a bearing or something similar. So, I thought it's time to replace the spindle with a slightly more powerful spindle (2.2kw) with an er20 chuck. My Question, which may appear obvious to most is, do I need to change the vfd (1.5kw) as well, or will the prt do the job?
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Yes, you do. You'll need a VFD rates for 2.2Kw or larger.
Gerry
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Ok, thanks for that ger21. I think I'll look for the same model as mine, or thereabouts.
240 volts. Aust. single phase
Where in Aust are you?
I'm in W.A, south of Perth. I've just decided that it's going to be cheaper to replace the spindle with a 1.5kw and flog the new 2.2kw. And I'll call it lesson learnt. should have done more homework.
63A is your mains supply not what your wiring is for your power outlet
You need to know what the outlet amperage you are connected to, the wiring of the outlet will have an amp rating this would need to be a minimum of 25Amps to run the 2.2Kw on your 240V single Phase supply Spindle they are 8/ 9amps 3 Ph
A 2.2Kw VFD Drive needs to have a minimum supply of 25Amps to work correctly
Mactec54
Well, that was good news, as the seller hadn't sent the 2.2kw spindle, they did a refund. Very happy with thier business acumen.
Last edited by thewillow; 12-04-2018 at 04:11 AM.