Just for the record, if your looking to buy one, it's a single phase one, or single phase IN inverter/VFD .
There are three phase IN also, so be aware of that.
If your looking for the cheapest brands there are a some minor differences.
The newer Isacon drives have a self shut off tech for the computer fan, so its not running all the time.
You need a small relay to have a start and stop station, or you can just make do with a basic light switch type.
A light switch is probably OK for a bandsaw.
Look up Carl Holmgren's toggle type switch ideas if ifs not suitable, or just buy a relay
The Older Huanyang's are more suitable if you need a braking resistor on your machine, and can/know someone who can
do circuit boards to add extras to enable dynamic braking.
I'm not into testing how good the brake can be, as you could possibly damage the unit doing that.
I like a nice ramped startup and an easy coasting stop for lots of reasons.
You are looking for a machine that has a dual voltage motor....
This means there will be a triangle symbol (delta) low voltage three phase" with 220 or 240V
The newer ones are so easy to plug in and use, and were here all day/year long.
Why do you want to pay someone to hook it up for you.
Would you call in somebody to wire a plug ?
Its literally that simple 3 inputs from the wall, live neutral and earth, the regular three core wire
Then 4 inputs to the motor (4 core wire) 3 hots and the ground (both input and output share the earth terminal)
I choose to bolt affix both earths to the cabinet and then to the terminal as the VFD terminals are small/delicate
Here it is when you break it down though (you may notice the small terminals on the Huanyang and both earths stacked)
The only thing done apart from entering the parameters and wiring was the terminal box on the motor.
The copper "straps" need to be configured to delta ...just swap the orientation of these to the orientation as shown.
You may only see two of these straps , but its probably two straps stacked on the other, in the other orientation.
Regardless if you want to get a pro in, you still have some things to do.
Where is the machine goin, will it be mobile or in one place.
Reason I ask is you will more than likely want a dust shroud or cabinet for it
I believe these things have a greater electrical noise when the unit is a distance from the motor.
I don't hear it, but my machines are mounted to them or the mobile base, even with both my cheapie
100 quid Chinese types
Were happy to talk you through everything, really everything
Wiring these things up is not like a sharpening thread, so everybody has the same opinion.
The parameters need to be set correctly on these, this is very important, as you would blow up a motor very
easily by trying to run it at the default setting of 400hz (depending on which unit)
You may be aware that our motors in Europe run at 50hz, so you don't want to try and run it EIGHT times faster
than its designed for.
I have parameters for the 2.2KW/3HP Huanyang and the newer Isacon/askpower units on my bandsaw and tablesaw.
Both 3HP motors with 2 pole motors.
What Startrite are you looking at? the older 502's look stout
Just for another "for the record"
I would not feel comfortable just hooking up a VFD for you, and bidding you good luck pal, without any training.
If it was the case, I'd be worrying if the unit needed a parameter reset in the future
and I'd feel obliged to return to renter the parameters again.
Set yourself free with knowledge friend :roll:
If you want reading, look up Bob Minchin's (Bob, ninefingers) induction motors PDF
He is a gent and participates here sometimes too.
Good luck Kev
Tom
