Messages

1

General Discussion / Re: Smithy 1240 Linux to Mach3

« on: November 26, 2015, 01:27:26 PM »

The Smithy 1240 mill spindle is running at full RPM.  Thanks to Bob, Steve and fc60 we assembled enough information to get our mill running properly. The PMDX-110 board is rather old yet it is functioning just fine and PMDX continues to support the product. I think those are hallmarks of a really fine company.
Cheers
Grayson

2

General Discussion / Re: Smithy 1240 Linux to Mach3

« on: November 20, 2015, 12:16:02 PM »

Bob,
We will do some more exploration into the VFD parameters.
We really appreciate your help with this project. Your guidance is really important to us.
We will press on and let you know what happens.
Thanks
Grayson

3

General Discussion / Re: Smithy 1240 Linux to Mach3

« on: November 19, 2015, 04:30:16 PM »

Dave,

We first measured the voltage between the VC and the AVO terminals and found 1.8 volts.

We removed the wire from the VC terminal on the C300 and jumped VC and VS. The spindle RPM by direct measure was only 3162.

Thanks
Grayson

4

General Discussion / Re: Smithy 1240 Linux to Mach3

« on: November 19, 2015, 03:38:14 PM »

Hi Bob,
We are reasonably sure that the Sunfar C300 is a Model 2S0022.

We traced the wires from the PMDX-110 up to the terminals on the C300 and here are the results.

J2              C300
Pin             Terminal Strip
2                GND
6                GND
1                FWD
3                REV
5                VC

Thanks
Grayson

5

General Discussion / Re: Smithy 1240 Linux to Mach3

« on: November 18, 2015, 04:34:55 PM »

Hi!
After checking the pot to make sure it was at the upper limit stop.

We used a digital meter and produced the following results:
With the connector off of the J2    9.89 Volts.
With the connector on the J2        9.82 Volts.

Thanks
Grayson

6

General Discussion / Re: Smithy 1240 Linux to Mach3

« on: November 17, 2015, 07:20:22 PM »

Steve,
We are making some progress in that the spindle can be driven FWD and REV. However the RPM continues to be a problem. Running too slow at top spindle speed even after turning the pot all the way up.

We tried the VSD speed calibration routine for the PMDX-106 and found no improvement in max RPM.

Here is the XML file as it stands with the spindle running both directions. Additionally a plot of the RPM over a range of M3 commands.

Thanks
Grayson

7

General Discussion / Smithy 1240 Linux to Mach3

« on: November 14, 2015, 10:54:20 PM »

We would very much appreciate your assistance in getting our Smithy 1240 running with Mach3. Briefly, the spindle does not operate correctly and we seek advice from someone with more expertise.  I am having a time trying to learn all the technical aspects of the electronics and what the parameters should be in the Mach3 software. I think we are close but just do not have the technical knowledge to get the project finished.
The X,Y and Z axes seem to be working fine after using the auto setup found in Mach3. The limit switches and homing are working as expected.  The central problem is controlling the spindle. An m3 or m4 code both result in forward rotation of the spindle.  The actual and commanded speed (using an s command in a program or in the MDI tab) of the spindle is different. The maximum speed should be 4000 rpm and we are producing about 3500 or less. The worksheet from the PMDX website and a note on a similar thread really helped. We removed the linearity.dat file from about four places in the Mach3.
When we purchased the machine the original EZTROL system was abandoned in favor of a desktop computer using the printer port and a cable to the PMDX-110. The computer had a dual boot Windows XP and Ubuntu operating system with LinuxCNC running the mill.  A prior owner loaded Windows XP on the computer along with Mach3. We gave Mach a quick try but did not get good results. We used LinuxCNC to run the mill for a couple of years and due to a litany little problems with LunuxCNC we decided to shift to Mach3 after a fresh installation of Windows XP.

C300 series of Inverter Manual (Sunfar)
www.sion.rs/download/sunfar/C300manual.pdf

C300 VFD setting for Smithy 1240 (Smithy)
http://server2.smithy.com/media/pdf/c300vfd_settings.pdf

Connections at the C300 from the PMCX-110
GND     two wires violate and orange
FWD     Black wire
REV       Red wire
VC          Nondescript color
Cable colors change due to loom make up leading from C 300 to PMDX-110. We can trace if necessary.
Wires and the switch settings at PMDX-110 can be seen in the attached photo of the board.

Motor Information (difficult to see clearly)
ANHU Wannan Electric Machine Co LTD
Type   YVF2-90L-4
No.  4715182
Voltage 220
Hz   60
RPM   ?
Ins Cl  F

8

Parallel Port breakout boards, motherboards, and dedicated accessories / Re: PMDX-110 Machine Shuts Down At Random

« on: November 13, 2015, 05:58:51 PM »

Thanks Steve,

We found that document just yesterday and it was a eureka moment for us. This weekend we will absorb the information. It should go along way in improving our ability to ask more thoughtful questions.

Our task:
To get Mach3 up and running on the Smithy 1240. We are dumping the LinuxCNC program.

I am rather confused by the spindle motor setup. The PMDX-110 is running the X,Y and Z just fine. We have not tried the A with Mach yet. The spindle is running but not under control of the software other than about 3/4 of max speed.

After looking at the new information we will create a new post.

Cheers
Grayson

9

Parallel Port breakout boards, motherboards, and dedicated accessories / Re: PMDX-110 Machine Shuts Down At Random

« on: November 13, 2015, 12:25:42 PM »

Happy to see a posting concerning the PMDX-110. We have a Smithy PMDX-110 in our mill and will be posting about our need for assistance.
Grayson