Centroid Community CNC Support Forum

n advance I apologize if my question has been answered in a past topic.

Equipment:
VFD: Huanyang 4KW VFD Model #: HY04D023B
Spindle: HIGH SPEED ELECTRO SPINDLES Model# EYS8043-18/4
Controller: Centroid Acorn (#14455)

Both the spindle and VFD was purchased as a kit from Ebay. I've reached out to the seller about the problem but have to get a response.

Issue:
I'm testing the spindle out via the VCP and getting unpredictable spindle direction. When issuing the M3 command the spindle will shutter then run either CW or CCW.

Observations:
I've noticed when the shutter does not occur the spindle will operate as intended. When setting the drive up by only modifying the necessary parameters, the spindle will just shutter and drive will fault due to overamp during ramp up (EOCA). However, the spindle will start if helped by hand.

The shutter is reduced when I modify the V/F curve to match the "Curve of Higher Torque" by modifying the lower and intermediate frequency / voltage (PD006=2.5, PD007=0.5, PD009=24, & PD010=9) on page 28 of the manual, Starting Frequency (PD027=10) and the Motor Slip Compensation (PD147=2%). Even though the problem was reduced it will still occur around 60% of the time.

Solution:
Currently, I'm at a loss. I've disconnected the REV wire all together with no change. Using the multimeter, the spindle cable appears to be free of any shorts and spindle's resistance across each terminal is 0.9 ohms. At the moment, I've ordered a Huanyang GT series drive and used Automation Technologies branded spindle to see if the problem repeats itself.

Any comment or recommendations are welcome.

we will need additional infos:

viewtopic.php?t=1043

Uwe

suntravel wrote: ↑Thu Jul 17, 2025 12:20 pm we will need additional infos:

viewtopic.php?t=1043

Uwe

Thank you, I'll try and get together some additional information tonight.

I say this all the time buy you can run the spindle and vfd without acorn. You should be able to touch two wires together for fwd and use a 9v battery for the 0-10 input. This takes acorn out of the equation and you are just figuring out the spindle and vfd. After it's working as it should, go back to getting acorn to run it.

Ken,

The first thing I tired was isolating the acorn from the VFD as you stated. However, I utilized the 10V supply in the drive rather than use a battery. Still no change. I've attached a wiring diagram and a couple of videos to help explain what I'm seeing. I'm hoping to get a response from the seller telling me that I have my drive parameters all jacked up and here's how to fix it.

Adam

I would be looking in the manual that came with the vfd. First reset it to factory param's. then change param's for rpm, amps, remote turn on, and where freq command comes from. That should make it fly. Don't set a min rpm in the vfd... Set that in acorn or it messes up the spindle speed.

The vfd manual will also have some hookup drawings and go by those. Sometimes there is a jumper setting in the vfd that needs to be changed