Huanyang inverter

[RobonthemoorParticipant @robonthemoor]

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[RobonthemoorParticipant @robonthemoor]

I have a 4kw huanyang inverter on my lathe, I want to wire into it the foot stop, I have it mounted on my lathe so I can use the on off fwd rev and speed control all from the front of the inverter. Can't seam to work out which connection to use from the manual? The foot switch in open circuited until the foot brake is depressed.

rob

[John RuddParticipant @johnrudd16576]

The foot switch needing to make to STOP the machine is the not the best way…….

if a wire were to become detached , then your E stop is ineffective……..

cant you rewire it for a nc contact? 

Edited By John Rudd on 25/01/2014 20:52:32

[RobonthemoorParticipant @robonthemoor]

Tel me more john!

Rob

[John RuddParticipant @johnrudd16576]

Posted by Robonthemoor on 25/01/2014 20:58:13:

Tel me more john!

Rob

What do you need to know?

how electrical savvy are you?

I have the same inverter on my mill (albeit it's the 1.5kw version) but I retained the orig nvr switch to provide an E stop….

Basically, that removes all power from the machine, the motor stops dead….

What you propose , using your foot switch via the inverter isn't good practice , the rundown of the motor would be controlled by the inverter…..

[RobonthemoorParticipant @robonthemoor]

Savvy! So so, so you are saying run the power down to the motor through the foot switch via a relay!

[Tony RayParticipant @tonyray65007]

Rob,

No I don't think so. When you operate your foot switch it should cut the power to the inverter not the motor; putting any device that breaks the connection between the motor and inverter is likely to kill the inverter.

[RobonthemoorParticipant @robonthemoor]

That can produce a power serge to the inverter as it is under load, or so I'm told" damaging it. It as a power DC brake in the inverter. I was hoping to use that. But I see where you are coming from, things can go wrong with wiring.

Rob

[john fletcher 1Participant @johnfletcher1]

Do NOT in any way interupt the electric supply between your inverter and the motor, as Rob above has said. Why would you want to use a foot switch ? If you do need a foot switch then you should control the INPUT to your inverter via a contactor and wire the foot switch in seried with the contactor stop. Ted

[Rick Kirkland 1Participant @rickkirkland1]

In support of the previous several replies to this thread. From an electrician who has been doing inverters as a fair part of my work for the past ten years. NEVER interrupt the contact between the output and the motor, unless you wish to buy a new inverter after you do.

Rick.

[John RuddParticipant @johnrudd16576]

Posted by Robonthemoor on 25/01/2014 20:44:03:

The foot switch in open circuited until the foot brake is depressed.

rob

And that's the initial issue…..normally the stop circuit is normally closed until activated…….To re-iterate what I said earlier you really need a switch with n/c contacts …….the simpler the method of integrating the E stop the safer it will be as there's less chance of failure…..

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