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Author Topic: Can't get spindle to turn on, for 2 years!  (Read 11919 times)

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Offline Jeff_Birt

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Re: Can't get spindle to turn on, for 2 years!
« Reply #20 on: February 22, 2013, 02:35:45 PM »
Please try it right at the G540, this eliminates any problems with the wiring between the G540 and rear panel. Granted there are only three wires but it is good to eliminate everything that can be eliminated.
Happy machining , Jeff Birt
 
Re: Can't get spindle to turn on, for 2 years!
« Reply #21 on: February 22, 2013, 03:33:49 PM »
How do you remove the wires from the G540 connectors?

Offline Jeff_Birt

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Re: Can't get spindle to turn on, for 2 years!
« Reply #22 on: February 22, 2013, 04:13:00 PM »
You just need a small flat blade screw driver.
Happy machining , Jeff Birt
 
Re: Can't get spindle to turn on, for 2 years!
« Reply #23 on: February 22, 2013, 04:16:50 PM »
OK, redid the test. I didn't know you had to pop the connector off the board ;)

Same result, relay clicks, entered speed, clicked DRO button(also did with s5000, m3 in MDI) 0 volts shown.
Hard to capture it as it happened but you can see the setup

Thanks,

Paul





Re: Can't get spindle to turn on, for 2 years!
« Reply #24 on: February 22, 2013, 04:20:55 PM »
Note: you will no doubt notice the meter says "O AC"
This meter does not have a dedicated DC setting, it auto detects when it is set to a a AC/DC setting, the default display is AC unless DC is detected, then it changes to DC.

I tested it on the battery just to be sure. Also it has been reading the 5V DC on the VFD

Just want to avoid confusion.
:)

Offline Jeff_Birt

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Re: Can't get spindle to turn on, for 2 years!
« Reply #25 on: February 22, 2013, 04:36:01 PM »
What is the other probe on your meter hooked to? I can only see one probe from your meter which is hooked to an orange wire.
Happy machining , Jeff Birt
 
Re: Can't get spindle to turn on, for 2 years!
« Reply #26 on: February 22, 2013, 04:41:40 PM »
I could not get the whole setup in the picture, I needed another hand

One meter probe hooked to a wire on terminal position 8 on the G540
Other probe to a wire from terminal position 7 on the G540

Correct?
Re: Can't get spindle to turn on, for 2 years!
« Reply #27 on: February 22, 2013, 04:56:29 PM »
Hooked up like this.

Paul

Offline Jeff_Birt

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Re: Can't get spindle to turn on, for 2 years!
« Reply #28 on: February 22, 2013, 05:09:30 PM »
The only two things I can think of are that the PWM signal is not getting to the G540 (problem with ribbon cable from SmoothStepper) or the PWM circuit on the G540 is not working. If you want to send me the G540 I'll test it out here to see what the problem is.

Thanks for clarifying the meter connections. I hesitated to ask as I figured it was done correctly but someone reading this later on trying to troubleshoot a similar problem might not realize both meter probes need to be connected.
« Last Edit: February 22, 2013, 05:13:30 PM by Jeff_Birt »
Happy machining , Jeff Birt
 
UPDATE Re: Can't get spindle to turn on, for 2 years!
« Reply #29 on: April 08, 2013, 09:24:35 AM »
OK, it seems like I am close but not there yet!

Working with Jeff I sent him my G540 and he tested it and found that there were some settings in spindle motor tuning that were wrong with the combination of the G540 and Smoothstepper.

THe correct settings are:

set the steps/unit = 1000

set the velocity = 60

set the acceleration = 1000

With this my spindle does now run, but not correctly.
First I have lost the ability to run it in local, manual mode. Not sure why nothing has changed from my older setup, where it would ONLY run that way.
Mach now does turn on the spindle but it will only run very slowly, maybe 100 rpm or less.
I have spindle pulleys set up with min being zero and max 10,000(the max speed for the Dyna)

Here is one odd behavior I don't understand, and I have seen this from the get go:

I enter a spindle speed, say 1000, and click the LED, or hit F5 and the field where the speed is entered will count down from that speed to zero, rapidly, like in 1/10th of a second.
Is this how its supposed to perform?

Any other ideas would be appreciated.

I have also contacted Jeff in a private email about this as well.

THanks all,

Paul