Help installing an Arrow 1000 (Power Hookup)

[Yukon 400]

Hello Everyone,

I have been looking around at various VMC and just recently purchased an Cincinnati Arrow 1000, hopefully this was a good choice over a Fadal 4020. the machine only came with an operator's manual and I'm having a little difficulty in figuring out how to supply power to the machine.

Up on top there is a main breaker with three lugs which I assume would be L1, L2, L3 and a ground to an grounding block. My question is where are the adjustments for selecting the input voltage and how much power is required to run the machine. On the exterior name plate it mentions a breaker of 100A is required, but I would assume that would be for 208v service, my plans are to provide 460v to the machine. Does the machine also need a separate 120v circuit for the computer controls or does it feed off the main?

I would appreciate any kind of assistance, thank you.

[Al_The_Man]

It is virtually unheard of for a Industrial machine to feed the control separately, it is normally taken care of automatically in the enclosure.
If the machine is dual voltage, there will be taps on the input transformer.
If it has this arrangement, then the fuses in the disconnect may have to be lowered.
If it has a NFB, non-fused breaker disconnect then there is not much you can do about it.
If no taps are present then you will need an external transformer.
Are you sure it is not already 460?
Al.

[kccrusher]

all of our Cincinnati's came with transformers that were changed to the matching shop voltage on the input side; never checked the voltage on the outgoing to the machine's main breaker; our technician told us to run them regardless of matching voltage, as they are an isolation type. Al is right, no separate feed for control power, all internal.

[Yukon 400]

Is there any way to find out the default voltage? There's nothing inside the cabinet that would resemble a high voltage transformer.

[mike_Kilroy]

call cincinnati mag and ask them! they are friendly and will tell u just what u need to know! ask for robert varney.

[Al_The_Man]

Originally Posted by Yukon 400 Is there any way to find out the default voltage? There's nothing inside the cabinet that would resemble a high voltage transformer.

Trace the wires or labeled conductors coming out of the disconnect or NON-fused Breaker and see if they correspond to with the same numbers on the primary of the transformers shown or any three phase motor, this may give you an insight to what the feeder voltage should be.
I find it strange that a OEM should label the supply that way unless it can be changed by transformer tap?
Especially Cinci, Milacron?
Al.

[maver1ck]

As kccrusher said, Cincinnati shipped the Arrows with an external transformer which needs to be set for the customer's shop voltage. I believe the recommended output from the transformer (or input to the machine in your case) is 230 VAC, but seem to remember running them in the 208-240 VAC range depending on customer voltage. If your shop power is 460, you'll need to step it down before hooking it up.

Cincinnati is still very helpful supporting these machines, so when in doubt, ask them. If you do call them for support, I'd also recommend asking about getting a more complete set of manuals. The electrical schematics would tell your electrician exactly what to bring into the machine.