[TheDeon]

I have an air compressor with a 3ph 3hp motor. I bought the proper size VFD to power it. I really know nothing about programing the VFD. However, I wired it using the magnetic starter and it worked and motor stopped when to pressure(120psi) when I drained some air to 90psi it threw a code on the VFD. I reset VFD and it started just fine. I also wired the motor direct to the VFD and used the pressure switch running the wires to the GND and fwd terminals on the VFD as per a video on youtube. But the motor does not turn off at 120psi. So. Is there or What settings do I need to program in to the VFD?

[mactec54]

I have an air compressor with a 3ph 3hp motor. I bought the proper size VFD to power it. I really know nothing about programing the VFD. However, I wired it using the magnetic starter and it worked and motor stopped when to pressure(120psi) when I drained some air to 90psi it threw a code on the VFD. I reset VFD and it started just fine. I also wired the motor direct to the VFD and used the pressure switch running the wires to the GND and fwd terminals on the VFD as per a video on youtube. But the motor does not turn off at 120psi. So. Is there or What settings do I need to program in to the VFD?

Yes you will have to have Terminal control Parameter set, you did not say what VFD you have, there really is not much to program, for what you are doing, most VFD drives default to a standard AC motor

[Al_The_Man]

It may pay to stick an unloader valve in the air line that allows the motor to come up to full rpm until going on line.
The could be achieved with one of the outputs of the VFD set to Up-to-Speed.
An unloader is often used in the case of larger compressors.
Ensure you set the right pole count for the motor also, most are 4 pole motors.
Al.

[TheDeon]

Thanks for your replys. HY04D023VFD. The air compressor does have an unloader valve. The video on youtube didn't specify any settings programmed into the VFD.

[mactec54]

Thanks for your replys. HY04D023VFD. The air compressor does have an unloader valve. The video on youtube didn't specify any settings programmed into the VFD.

Have you got a link to the video, the unloader pressure switch normally has high voltage across it, but if he is just using it as a switch then that should work on those connections

What Parameters have you set

[TheDeon]

I have no link to the video. But search VFD running an air compressor. I'm not sure what parameters I should/could use and what to set them at. I have it set to 60hz as far as parameters go. Not sure about the rest of them. It starts up when I plug it in and push start on the VFD, It builds up to 120psi the air switch activates but doesn't communicate that to the VFD(even though it is wired to the FWD and GND terminals) like the video. I can turn it off manually and restart it manually with the VFD and it does just fine even with 120psi in the tank.

[TheDeon]

Well I took some pictures of my manual and wrote down the setting on the VFD. But it ain't letting me find them to post them.

[mactec54]

Well I took some pictures of my manual and wrote down the setting on the VFD. But it ain't letting me find them to post them.

Ok here is all you need to set as you are using just a start / stop for your Compressor Motor, note there are no variables being used with these settings, meaning you are set at 60Hz and the motor rated speed

You may have the Jumper like photos below, you may not, but if you have this you will need to change it

Never Turn Your Compressor Off if it is Running, always Wait for it to Unload Before Turning it OFF

Huanyang Mactec54

60Hz AC Motor Compressor

PD000=0 ( For Parameter unlock ( 1 ) for Parameter Lock )

PD001=0 (1 For Remote Control)

PD002=0 ( 1 For 0-10v Terminal Control or Remote Trim Pot Control )

( J1 Also May Need to be set for Terminal Control )

PD003=60

PD004=60

PD005=60

PD007=10

PD008=240 (Motor Rated Voltage )

PD009=15

PD010=8

PD011=60

PD13= 08 is for Factory reset, Only use this to set VFD to Factory Default Settings

PD014 Acceleration=12 ( Adjust to suit)

PD015 Deceleration=12 (Adjust to suit)
( PD15 is ignored IF PD26=1 Then the Spindle will Coast to a Stop)

PD141=240 ( Motor Rated Voltage )

PD142= ( Motor Max Rated Amps)

PD143=4 ( Motor Number of Poles)

PD144= ( Max motor Speed ) ( 3000 Can be used )

PD72=60

PD73=60

[TheDeon]

Well I don't have a PD141 or higher then PD35. It goes from Pn1 thru Pn35. It only has 1 buss terminal row. 12v out, 5v out, 5v in, 10v in, 20mA in,5v Fout, GND, FWD, REV, RST, DO+, D1-, D2 Jog, Lk, Lb, Lz. I hope this helps. I'm not sure what to do.

[ericks]

What is your motor's voltage?
Also your motor's Kw?
Is it possible to post an image of the motor "name plate"...?

[Al_The_Man]

PD050 -PD053 is to assign an output, you could wire a relay to one to switch the Unload valve and set for frequency reach .
Al.