[cnczane]

I ordered an identical replacement for the Huanyang HY GZ-80-2.2B 2.2kW, 220V, water-cooled spindle when the "exotic" low-torque ball-bearing collet nut seized up on the shaft.

The original HY worked perfectly with a Sunfar E300 2S0022L VFD, but the replacement pegs out at 14,000rpm whereas the original had no trouble reaching the maximum, 24,000rpm.

The sketchy vendor advises to "buy a Huanyang VFD," like theirs, and "change PD144 to 3000"[sic].

The Sunfar VFD does not use "PD" parameter settings, but "Fm.n" function settings instead.

The NAME of the parameter corresponding to "PD144" is "Rated Motor Revolution" which I take to be "Rated Maximum RPM" in English-English.

The Sunfar has no similarly named function/parameter.

"Here's the Thing," as Adrian Monk would say: I bought an IDENTICAL spindle so I would not have to work with "settings" or parameters or functions of any kind because IDENTICAL hardware should work IDENTICALLY with IDENTICAL settings.

If there is a kind person out there who has a Sunfar VFD running a Huanyang spindle who could help me understand what needs doing, it will save me and the other poor b*st*rd reseller doing a return.

Thank you.

[fc60]

Greetings,

I have a SunFar VFD.

I wrote to the company and got excellent service.

Cheers,

Dave

[cnczane]

Thanks, Dave. The only website I've found to hunt up an email is:
www.sunfar.com.tw
in Chinese.

My AI bot says: "Based on available information, Sunfar Computer Co., Ltd’s official website does not prominently display direct customer service contact options such as phone numbers, email addresses, or online support forms. There is no clear evidence that customer service is available through phone, email, or online forms directly on Sunfar’s site."

Did you mean surface mail to:
No. 2, Jianguo 2nd Road, Sanmin District, Kaohsiung, 80750, Taiwan?

Jeepers! what was the turnaround?

Tried asking about US resellers as well:
"Sunfar Computer Co., Ltd is primarily a Taiwan-based distributor of computer products and does not appear to have a publicly listed network of authorized resellers in the U.S.."

[fc60]

Greetings,

It was several years ago.

I do not recall where I got the contact information; but, it was via email.

I conversed with an Engineer several times and the response was quick.

I will try to find my old email correspondence.

Cheers,

Dave

[RaderSidetrack]

I think you might have been led astray by unreliable AI and got the wrong Sunfar company.

The Sunfar linked on this page is a VFD manufacturer: https://sunfar.en.made-in-china.com/

While that is a 3rd party site, the page below looks like a direct contact possibility but I'm not a Facebook member so have not evaluated that page.

https://www.facebook.com/pages/Shenz...51770128274852

[cnczane]

Dave,
It figures; I just made a special trip to the post office to send a letter to TAIWAN.
Neither of the links is an official website, and the first one at "made-in-china.com" requires the creation of an account before the information will be released. The problem is that's still only a third-party site with second-hand information.
The seller of the spindle has one chance left to make this right. I expect--with their Red Chinese connections--they can pry the information out of Sunfar easier than I'll ever be able to.
If they foofle it, they can take it back.
Thank you.

[cnczane]

Dave,
Found 'em!
Putting this in for TNPB (the next poor bastid):
name: Shen Zhen Sunfar Electromechanical Equipment Co., Ltd.
email: [email protected]
website: 网址：www.sz-sunfar.com

[cnczane]

Update: I did hear back from the seller of the Huanyang HY GDZ-80-2.2B 220V 2.2kW water-cooled spindle who said "the engineer" recommended these settings in the Sunfar E300:
F0.4: 400
F0.12: 400
F1.3: 400
based on, I suspect, the operating frequency of the spindle.

In any case, those settings were already entered in the controller, which worked with the identical old unit, so I will be sending this one back.

[cnczane]

Instead of issuing a refund and a prepaid return label, the vendor issued a refund with a hearty "Good luck with the boat anchor!"
I'd like to troubleshoot why the thing will only make 13,500rpm (was 14,000 in original post: maybe it's getting worse) with the VFD settings I use.

Q. Can someone point me to a tutorial about "How VFDs control spindles?"

I decided to ask an "AI bot" (which creepily had already found this, my, thread--and quoted it to me as part of its response):

Q. Does the Sunfar E300 VFD have a setting for maximum rpm?

A. Yes, the Sunfar E300 VFD does have a parameter that effectively sets the maximum RPM of the spindle, but it is indirectly controlled by TWO key parameters:

F0.4 (Upper Frequency): This sets the maximum output frequency of the inverter, which directly influences the maximum spindle speed. For a 400 Hz spindle, you would set F0.4 = 400 Hz. [and this one actually EXISTS]

Rated Motor Revolution parameter (sometimes referenced as PD144 in other VFD brands): On the Sunfar E300, this parameter is not explicitly named "Rated Motor Revolution," but it corresponds to a function setting that defines the rated motor speed (RPM) at the rated frequency. This parameter tells the VFD what RPM corresponds to the rated frequency (e.g., 400 Hz). Setting this correctly allows the VFD to scale frequency to RPM properly. [and no one knows what "this" refers to...]

From user discussions and the manual, the Sunfar E300 does not use a parameter named PD144 [it does not], but the equivalent setting is present under a different function code (often in the Fm.n parameter group) [this is theoretical. Unfortunately, the exact parameter number/name for rated motor RPM is not clearly labeled in the publicly available manual excerpts [ah, THERE it is!], but it is acknowledged in user forums [somewhere in the ether] that this setting exists and is necessary for correct spindle speed scaling. [probably maybe]

[cnczane]

I see I should add a Sunfar E300 manual as I accidentally discovered that two versions are around, with one of them having the entire section of descriptions of all the parameters (poor as they are) removed completely.

I'm attaching[1] the more complete version (and incidentally, it was the description of parameter/function F3.7 which caught my attention as possibly having something to do with the output speed limitation).

Regarding F3.7, the manual says:
Set running linear speed and linear speed display data, or display other physical quantity
which is direct ratio with output freq.
Running_linear_speed (d-8) = F3.7 × output_freq (d-0)
Set_linear_speed (d-9) = F3.7 × set_freq (d-6)

d-0, d-6, d-8, and d-9 are "monitored parameters" viewable from the control panel of the E300 (after appropriate button-pushes):
d-0 current output_freq
d-6 set_freq
d-8 running_linear_speed
d-9 set_linear_speed

The value I have set for F3.7 is 1.0. I interpret this to mean that the "running_linear_speed" will be identical to the output_freq., and the "set_linear_speed" will be identical to the "set_freq."

I'm frankly--very--surprised that this number was not set to 24000rpm/400Hz, representing the maximal rotation speed for the maximum frequency. (In fact, the manual says this setting is limited to the range 0.01-10.0.)

It remains to test what the values of d-0, d-6, d-8, and d-9 (along with d-2=inverter_output_volt, d-3=motor_rotate_speed, d-7=analog_input_AI, and d-12=analog_output_AI) are when the spindle is commanded to turn at 13,500rpm.

[1] Sorry. 1.5MB pdf file judged too-large for upload [max 19.5KB]: search the for a document named something like "Sunfar_E300_Series_Mini-type_Integrated_Universal-Inverter_Manual.pdf." (An AI bot might help.)

[fc60]

Greetings,

I think I found the manual.

Your device is newer than mine. Although, I suspect the parameters would be similar.

https://www.simphoenix.com/uploads/63cab59a.pdf

My machine only goes to 4,500 RPM.

Cheers,

David