HY VFD Wiring Label - Was it placed upside down ?

[lucidgroove]

Hey cnc experts! I picked up a 2.2 kw water cooled spindle with HY VFD from ebay back in November. I was still building out other parts of the machine and have just recently gotten to setting up the VFD. When I opened it up I noticed one of the strips of terminals has "maybe" an upside down label. All the images in the manual and what I have referenced online, show both strips with the labels from left to right. My thought was that it got put on backwards so I should wire into the terminals as if the sticker were on the other way. For example I am using the RS-485 connection method so I wired into the RS+ and RS-. But I did that on the far right, instead of the far left where the labels are. Here is a pic.

Nameplate Description
HY02D223B
VFD 1 Phase/3 Phase AC 220V 50Hz/60Hz
Spindle 3 Phase 0-220V AC 2.2KW 11Amps .50-400Hz





It seems to me that if is "As Designed" it would require a lot of PCB changes and then they would recreate the new label with correct orientation and order.

Thanks!

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[CitizenOfDreams]

Just measure the resistance between FA and FB - those are normally closed relay contacts.

[mactec54]

Hey cnc experts! I picked up a 2.2 kw water cooled spindle with HY VFD from ebay back in November. I was still building out other parts of the machine and have just recently gotten to setting up the VFD. When I opened it up I noticed one of the strips of terminals has "maybe" an upside down label. All the images in the manual and what I have referenced online, show both strips with the labels from left to right. My thought was that it got put on backwards so I should wire into the terminals as if the sticker were on the other way. For example I am using the RS-485 connection method so I wired into the RS+ and RS-. But I did that on the far right, instead of the far left where the labels are. Here is a pic.

Nameplate Description
HY02D223B
VFD 1 Phase/3 Phase AC 220V 50Hz/60Hz
Spindle 3 Phase 0-220V AC 2.2KW 11Amps .50-400Hz





It seems to me that if is "As Designed" it would require a lot of PCB changes and then they would recreate the new label with correct orientation and order.

Thanks!

It does appear to be incorrect, you may have a copy of the HY VFD, I have seen the label like this before

[Al_The_Man]

Looks like typical Chinese quality control,!!
I agree, it would have needed a change to the PC Board.
You can confirm the 'backwards' label by checking continuity on the ACM and DCM between top and bottom row as they normally would be.
Al.

[CitizenOfDreams]

You can confirm the 'backwards' label by checking continuity on the ACM and DCM between top and bottom row as they normally would be.
Al.

ACM and DCM are very likely tied together inside the VFD. It is safer to check FA and FB as I suggested earlier - those would have no connection to any other pins.

[Al_The_Man]

If the each upper and lower ACM and DCM show continuity to each relative terminal with the label assumed reversed, then it confirms that it is in fact backwards.
Al.

[CitizenOfDreams]

Look at the bottom row: ACM is #5 from the left, DCM is #5 from the right. If they are connected internally (and I suspect they are), there is no way to tell if the label is backwards or not.

[Al_The_Man]

THAT is my point!
They are isolated from each other. At least every one I have measured.
Al.

[lucidgroove]

Thank you mactec, citizenofdreams and AI for the quick responses and ideas.

I performed both tests with no power applied. Used my multi-meter on the beep setting and then on measurement setting.

When I put one end on ACM (top row) I only have continuity on the DCM (bottom row). None of the other terminals beeped.
When I put one end on DCM (top row) I only have continuity on the ACM (bottom row). None of the other terminals beeped.

(Referencing the upside down labels)
| RS+ | RS- | VI | AI | ACM | 5V | - | DCM | 24V | FB | FC | FA |
Resistance between FA FB = 21.22K
Resistance between FA FC = 2.24K
Resistance between FC FB = 20.98K
Resistance between VI RS+ = Open
Resistance between VI RS- = 0
Resistance between RS- RS+ = Open

These readings suggest the label is backwards.

FWIW - If I were placing labels (written in Chinese) on VFD terminals, I could make this mistake.

Thank you !

[mactec54]

Thank you mactec, citizenofdreams and AI for the quick responses and ideas.

I performed both tests with no power applied. Used my multi-meter on the beep setting and then on measurement setting.

When I put one end on ACM (top row) I only have continuity on the DCM (bottom row). None of the other terminals beeped.
When I put one end on DCM (top row) I only have continuity on the ACM (bottom row). None of the other terminals beeped.

(Referencing the upside down labels)
| RS+ | RS- | VI | AI | ACM | 5V | - | DCM | 24V | FB | FC | FA |
Resistance between FA FB = 21.22K
Resistance between FA FC = 2.24K
Resistance between FC FB = 20.98K
Resistance between VI RS+ = Open
Resistance between VI RS- = 0
Resistance between RS- RS+ = Open

These readings suggest the label is backwards.

FWIW - If I were placing labels (written in Chinese) on VFD terminals, I could make this mistake.

Thank you !

That is so true, most don't realize how different that is to them in English

You may be able to carefully peal it off and put it on the correct way

[lucidgroove]

That is so true, most don't realize how different that is to them in English

You may be able to carefully peal it off and put it on the correct way

I am going to try to salvage and reapply the label. It looks like everything is working. I can start/stop and adjust speed from UCCNC over the USB to RS-485 adapter.

When folks use these adapters, do they still use a relay from the BOB to turn the VFD power on? Currently I have to do it by plugging it in. I have the UC400ETH and 2 C10 BOBs. Can I run an output to the VFD from the BOB to do this?

Thanks everyone for helping make this milestone.

Doug

[Al_The_Man]

If using the pseudo Modbus interface, all control is made via this, There is a plug in for the Mach written for the Huanyang VFD.
It is not quite standard Modbus.
If the Bob has a open collector output it can also be controlled direct, see https://www.cnczone.com/forums/spind...equipment.html
Al.

[mactec54]

I am going to try to salvage and reapply the label. It looks like everything is working. I can start/stop and adjust speed from UCCNC over the USB to RS-485 adapter.

When folks use these adapters, do they still use a relay from the BOB to turn the VFD power on? Currently I have to do it by plugging it in. I have the UC400ETH and 2 C10 BOBs. Can I run an output to the VFD from the BOB to do this?

Thanks everyone for helping make this milestone.

Doug

You don't want to be plugging / unplugging your VFD Drive this is a bad idea, the VFD Drive will not like you doing this

Yes you can use a relay controlled from your Breakout Board You connect the Rely to FOR and DCM, this works just like a switch, you will need to change a Parameter and the Jumper for Terminal use

[Al_The_Man]

I can start/stop and adjust speed from UCCNC over the USB to RS-485 adapter.
When folks use these adapters, do they still use a relay from the BOB to turn the VFD power on?
Doug

Did you have any luck with the RS-485 control?
Al.