Mactec54
Yeah, the switch is on the machine, then goes to a box that says (reset) then to the motor.
Pic of motor tag. I'd like to run it at it's full 3400rpm. Pic of similar machine below. Mine is belt drive motor, not direct drive, but shows the on/off switch go to a box then motor.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Hi guys.
I noticed my Mach3 and spindle (1.5kW water Cooled) are not working as expected.
The issue is: when I set the spindle speed to the minimum on Mach3, the spindleis is actually spinning at 24000 rpm (top speed).
If I select the Mach3 spindle speed to the full steam ahead, the spindle nearly stops.
I've tested the PWM board signal (0-10v) and the output was 9.9V when the spindle was at 24000rpm - but Mach3 was around 800rpm
The relays are also working (it does spin CW and CCW when demanded.)
So what I did wrong????
Please check the snapshots.
[FIXED]
Dir low active and step low active on spindle's Port & Pins had the wrong value. I unticked both now the spindle is @max speed when Mach3 is @max speed. I hope my silly mistake help this community
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The vfd / spindle setup went ok - mostly.
Configuration of the drive went well regarding parameters. Spindle started up fine, and ran fine. The spindle was even fairly well balanced with only slight vibrations.
The cap on my motor is plastic underneath the electrical connector so connecting the ground wire there was not an option. Instead, I pulled the ground wire out from the cable insulation and routed it outside the connector. I then connected it to the spindle bracket. Easy fix.
At present, I have a potentiometer on a remote panel to control the speed, and I have the on/off controlled by MACH3 via a relay.
Following typical "break in proceedures" of industrial spindles, I slowly (over a period of hours) broght the spindle up to 24,000 RPM. The spindle runs a lot hotter than I would expect.
QUESTION: How hot does your spindle get (this is the 2.2kw, air cooled spindle)? Most of the heat on mine comes from the lower bearing area. I can barely hold my hand on the spindle after it runs for about an hour.
Chris D
I have two of those spindles, clamped to a board for testing. On one of them, the bearings are noticeably tighter than the other. But they seem to run at similar temperatures.
What I noticed, was the first time I ran them, they got pretty warm. But they seem to run cooler as they were ran more. The longest I have run them was maybe 20 minutes, and they probably didn't get much more than 100-110°F. But not running at 24,000.
What was the ambient temp when you were running them? It was about 60-65°F in my garage when I was running mine.
In practice, I will probably rarely run them over 18,000 rpm. And mostly in the 12,000-15,000 range. From what I've seen, I didn't think they would run that hot, but that perception may change when they are actually cutting.
Gerry
UCCNC 2017 Screenset
http://www.thecncwoodworker.com/2017.html
Mach3 2010 Screenset
http://www.thecncwoodworker.com/2010.html
JointCAM - CNC Dovetails & Box Joints
http://www.g-forcecnc.com/jointcam.html
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
Hi Gerry,
The ambient was around 90 degrees F.
The spindle was probably in the range of 160 just guessing. I found my infrared thermometer this morning so next weekend I will run the spindle again to see what temps it actually gets up to.
Chris
Hi,
I need a little help here.
I did the VFD parameter setup but the motor is like its surging at mid speed. It also shakes the machine badly. To listen the surge please watch the video below.
Motor is brand new. Specs are:
Phases: 3 Ph
Number of Poles: 2
Frequency: 50 Hz
Max Amps: 8.2
Rated Voltage: 220v
VFD: Huanyang 4.0kw
What I've tried:
- Removed the pulley (Same result)
- I've tried to control the motor through the operator panel (to make sure the analog signal of the BB is good)
- I've measured the motor shaft with a dial indicator to see if the shaft is true. It's perfectly true.
And this is my current setting (With the same order):
This .xls table can be downloaded here: http://puu.sh/x1gzF.xlsx
What can I do to solve this problem?
Thanks in advance.
Suat
By the way,
OK I checked this thread and I think I have to congratulate @mactec54 for being very patient all the time. He answered all the questions.
I believe he also has already answered my question here: http://www.cnczone.com/forums/spindl...ml#post1768524
But the motor mentioned in the post has 4 poles. Mine has 2 poles. For the working frequency how high can I go with the motor? 100hz?
If your motor is a good quality, then you can go as high as 120Hz, 100Hz would be safe if you are unsure of the motor quality, make sure you have a minimum Hz setting, this parameter is important, running the motor too slow, it will over heat without using an electric fan to keep it cool
Both of these Parameters you set the same 20Hz may be as slow as you can go with this motor, you could try 15Hz
PD011
PD73
These 4 Parameters would be set to the Max Frequency that you are going to run 100Hz or 120Hz max
PD03
PD04
PD05
PD72
Mactec54
Hi Mactec54,
Got it.
Say I use 100hz max, the parameter PD144 (I think it is the speed at 50hz) will be the value that is written in the motor plate (2900 in mine)? Or do I divide it to 2 (1450RPM)? EDIT: or double (5800)?
If the motor rated is 2900 @ 50Hz, then 100Hz would double the RPM but because the max number for this VFD would be PD144 3000, this then give it no restriction on the RPM
Having 50Hz in your country your max for this motor would be 100Hz, so safe would be 80Hz with your 50Hz motor, if the quality is good then 100Hz will be fine
The 120Hz I listed is for a 60Hz motor
Mactec54
Interesting. The manual I have the max value for PD144 is 24000.
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That's good they may have finally changed it, then try set it to the RPM that you expect to get with 100Hz
This is what it has been for many years, there may be other changes that I have not seen, is there a number or anything on your manual or do you have a link to a PDF manual
Mactec54
I'll take a look to the manual if there is a change list.
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Hi,
I've tried everything but no luck. The problem still persist. The motor surges at mid speed (700-1500 RPM) and shakes the machine. I've used the VFD it on my CNC-Router for 3 years without a single problem so I started to blame the motor (it's brand new ).
By the way, my VFD is not new. I noticed the parameters don't reset at all after I set PD013 to 08. Then I googled and find a post that the author mentioned 01 instead 08. So tried 01 and it did the reset. Weird.
The date I purchased the VFD is 07-16-2014 but I suspect it's much older than that.
Please see the VFD name plate in the attachment.
HY04D023B 220V 4.0KW General Variable Frequency Drive VFD Step-up Inverter $193.28 Free Shipping @GoodLuckBuy.com
Maybe I should buy a better motor. Maybe a 4 pole one.
By the way, I can not enter anything higher than 50 for PD003.
This definitely is not my best day. I feel hopeless.
Your VFD may be a copy of the Huanyang, which may be the reason for some different Parameter settings, there have been many different copies of this VFD, I don't think it is resetting correctly
PD003 would of been set at 400 for your other spindle this is the main frequency that you would be running at
PD000=0 if this is 1 then the VFD will not reset
Your motor looks good, I would say there are some Parameters that have not reset to default
Try everything set at 50Hz and see how the motor runs at it's standard name plate Hz
Mactec54