Tuning the Isacon HY series VFD

[RandyWilson]

New flash! I found the manual online. Or one that is really close. All you have to do is replace all of the references to AskPower A131 with Huanyang HY02D223B. Apparently these things are rebadged Askpowers.

 

[RandyWilson]

And the later HY version

 

[RandyWilson]

The more I learn about these units, the more I am suspecting the "HY Series" is a marketing ploy and Huanyang actually has little or nothing to do with them. They are made by Isacon Power Control Co. No matter, so far they have been working quite well in my applications.

So far.

I'm about to subject one to more stress. higher duty cycle, and starting a motor under load. I had an old small 60 gallon compressor with a 5hp two stage head land in my barn one night. How it got there shall remain a mystery, at least as far as the wife is concerned. I ordered a larger VFD, and behold, it is the same style as the previous ones. just much bigger. So now I get to tune to starting under load, and have to figure out a control scheme that is compatible with a pressure switch. Unless some better idea comes up, I'm planning on using the "jog" button remote input as the control.

The fun begins again. And yes, I can put a pressure release solenoid on the compressor head if it comes to it. But where's the fun in that?

 

[mksj]

My understanding is that there are cheaper copies of the HY, as some of the eCrap HY listings mention this. These are knock offs look alike of the HY, sounds like a clone of a clone. On a compressor, just connect the pressure switch to the VFD run input in the direction you want. This way you get the acceleration/deceleration and all the other run parameters are in affect. You can also program an input for a fixed frequency, in some cases one might use two different fixed speeds where a slower speed might be used to reduce the noise. Compressors have a minimum/maximum speed ratings, but the same pump is often used for different motors sizes/pump speeds. There are a few other people that have used these VFDs for 3 phase compressors with no issues, no reason to expect otherwise. I often recommend up sizing these to the next higher kW rated unit in this application, the price difference is nominal. These are all made to a price point, so in some applications there would be better choices and more post sale support if needed.

Use 2 wire control for the inputs controls which requires sustained closed to operate, not 3 wire which use momentary controls. With 2 wire control: Closed is RUN, Open is STOP.

 

[RandyWilson]

The problem I see with using the "run" input is it is a momentary button. Push and release once to start, push and release again to stop. I need an input control that is on when closed, off when open. I hadn't thought about the start and stop curves not applying to the jog function. Geeez.

 

[RandyWilson]

And it is another non-event. While the booklet implies the remote inputs act like the panel buttons, picturing momentary switches, they don't. They're non-latching. Jumper the run, the compressor starts. Remove the jumper, it stops. It's as simple as that.

I was all geared up for beating this problem. Looking forward to it, actually. How can I exercise my inner creative genius when these things are so cooperative?


I can't find a way, so could I get a mod to edit the subject? Change the "HY" to "HY series", or even "Isacon HY series"? Thanks

 

[RandyM]

And it is another non-event. While the booklet implies the remote inputs act like the panel buttons, picturing momentary switches, they don't. They're non-latching. Jumper the run, the compressor starts. Remove the jumper, it stops. It's as simple as that.

I was all geared up for beating this problem. Looking forward to it, actually. How can I exercise my inner creative genius when these things are so cooperative?


I can't find a way, so could I get a mod to edit the subject? Change the "HY" to "HY series", or even "Isacon HY series"? Thanks

All fixed.

 

[markba633csi]

I wonder if the multi-segment frequency is what they call the carrier frequency? Kinda makes sense in a chinese translation kind of way.
Mark S.

 

[KMoffett]

Attached is my wiring for a Huanyang VFD remote. RLY3 make the momentary push buttons SW4 and SW3 latching.

Ken

View attachment 236572

 

[RandyWilson]

Mark, now that I am more comfortable with the unit, I have a theory on the multi-segment thing. I'm thinking that when multi-segment is enabled, Pn03=7, the three external inputs normally used as forward and reverse jog become treated as a single 3 bit binary input. This results in a number from 0-7, with 0 being controlled in a normal fashion (Pn19), and 1-7 being programmable fixed speeds (Pn20-26).