Thread: Remote control of the HUANYANG VFD

Because you have to switch the output as well. With haunyang drives costing about $140, its hardly worth the effort, but it can be done

BTW they come with a 'remote head', you just need to add longer wires.
.

Stuart

Originally Posted by Stustoys

Because you have to switch the output as well. With haunyang drives costing about $140, its hardly worth the effort, but it can be done.

Stuart

Maybe it would be possible to mount the VFD onto a mobile trolley and wheel it to each machine ?

I read Jhovels thread re his remote panel. It looks like something you'd see in the apollo 11 moon lander

Moving the vsd isn't an issue, you can carry then with one hand.
but to switch the output from one machine to another you need either a switch or plugs/sockets.

Stuart

The switching is easy compared to reprogramming to specifically suit the motor/machine parameters which would be a PITA.

Actually the switching would also be a right PITA.
VFDs take a few seconds to power down and up,its just long enough to be irritating.
With most of VFD powered machines like my DP, lathe and CBN grinder, I typically leave the VFD running until I leave the shed because I believe its better if they are not repeatedly turned on and off.

Hi Bob,
No need to switch the vsd input off while swithing motors. It would help use coasting stop and have motors the same size.
In theory* on my set up I 'should' be able to swap motors without switching the vsd output off as there is a 4th pole on the switch that disables latching on the none selected motor**bthat would turn the vsd off for me...so.....in theory the run command would be removed at the same time as the output wires were switched.

Stuart

* the theory being that the 12V(?) control circuit would be open while the 240V output was still arcing
**the real purpose for this is so the controls on the machine not in use cant latch 'ON' and have the machine start when the vsd is switched to it.

Originally Posted by Stustoys

Hi Bob,
No need to switch the vsd input off while swithing motors. It would help use coasting stop and have motors the same size.
In theory* on my set up I 'should' be able to swap motors without switching the vsd output off as there is a 4th pole on the switch that disables latching on the none selected motor**bthat would turn the vsd off for me...so.....in theory the run command would be removed at the same time as the output wires were switched.

I keep forgetting that It does not need to be completely turned off. I was thinking more of moving the VFD around a shed to locate it next next to each machine.

The plugs and ribbon cable can be bought at Jaycar to remote mount the head, been there and done that. If it helps Powtran VFD's have ten different profiles that can be programmed for different machines or different operations on the same machine. The head on those can also be remote mounted even easier than the Huanyang using an ethernet cable. It is possible to also remote mount two control units for the Powtran in some cases but the outcome can be a bit hit and miss as I found after a bit of mucking around.

Not exactly relevant, but I had a thought today. I was cutting an internal 1 1/4" BSP thread in plastic 200l drum lids for a maniflod fill tube for my fire fighting unit. It has 2 drums for 400l. The thread was only about 5mm long. Lots of time spent moving the carriage into position and only a few seconds cutting the thread. What I thought of was installing a jog button that bumps the speed up while it is held in. As soon as you release it the speed returns to the preset. I had to move the carriage enough to check the thread with a poly nipple, which is pretty long.

Next I have to cut an external thread on a poly riser tube, after I buy the barrel union that I forgot I would need. Elbows come out the front, then up above the Barrels where the risers lead to a Tee piece. The top of the (upside down) Tee will be the filler tube. If I have enough riser tube I will made extended nipples to raise the height more to reduce splashing. I could not get risers exactly the right length.

A year or so ago I bought a length of 2" riser tube that had to be made to order. I waited 3/4 hr for them to cut the threads because it is apparently difficult to do with that size. When I got it home I found that they had cut it shorter with repeated threading attempts, and although it was long enough, it just made it. This was annoying because it was to totally bury the Dam Pump suction instead of it rising above the ground on an angle for the last bit, which of course put it in the firing line of the ride on mower. Next time I will cut the thread myself.

Dean

This guy has the control unit on the lathe itself . Are these units available to buy ? Mike

http://www.mig-welding.co.uk/forum/t...pmaster.38219/

Yes - http://www.newton-tesla.co.uk/index....product_id=585

but it will cost you 66 pounds + shipping

Michael

Originally Posted by Michael G

Yes - http://www.newton-tesla.co.uk/index....product_id=585

but it will cost you 66 pounds + shipping

Michael

eeek I think I will make one myself

Originally Posted by morrisman

...
I read Jhovels thread re his remote panel. It looks like something you'd see in the apollo 11 moon lander

Both my remote panels control other things as well: on the mill the table feed and on the lathe a digital leadscrew and cross-feed.
The actual VFD controls are just a Stop switch, a pot for speed and a button each for FOR, REV, JogFOR and JogREV. Pretty simple inside. You are only switching low voltage and current, so any switch will do. On my lathe, they are home-made membrane switches - just touch switches.

Looking at how this chipmaster is set up with a VFD conversion

http://www.mig-welding.co.uk/forum/t...pmaster.38219/

I would think that there would be a loss of torque as the rpm's are reduced below the 50hz 1440 rpm . The chipmaster has no gearbox , it is more or less direct drive to the spindle from the new motor he has installed . Id be concerned about the lower torque when thread cutting at low speeds Mike

Originally Posted by morrisman

I would think that there would be a loss of torque as the rpm's are reduced below the 50hz 1440 rpm . The chipmaster has no gearbox , it is more or less direct drive to the spindle from the new motor he has installed . Id be concerned about the lower torque when thread cutting at low speeds Mike

Hi Mike,

The Chipmaster actually has a two-position lever on the headstock that selects either the geared (low speed) range or direct drive (the high speed range). The Kopp variator (as originally fitted) provides stepless speed adjustment within either range. Compared with the Kopp variator, a VFD would indeed give less torque at the lower speeds within each speed range, and a reduced range of usable speeds. The Kopp is good for 9:1, and with the two speed options in the headstock the Chipmaster's speed range of 35-3000rpm.

Cheers,
Bill