Messages

131

General Mach Discussion / Re: CS Labs CSMIO/P-A

« on: July 30, 2018, 01:41:06 PM »

Hi Allan

Sorry to bother you again. I set up my Z axis and was working fine until today when the drive decided not to enable. Do you think its worth spending money on these drives as they are 30 years old? I have found a company that can supply some new 20amp analogue drives cheaper than it was to repair the Norwin ones a couple of years ago. They have checked the specs of the Norwin drives and Sem motors and advise they will work fine.
The drives do not do tacho feedback though. Is this a major issue? It's so frustrating doing a retrofit and sometimes wonder whether to just spend the money on a new machine.

Cheers
Mick     

132

General Mach Discussion / Re: CS Labs CSMIO/P-A

« on: July 29, 2018, 05:32:13 AM »

Thanks Allan

Appreciate your help again.

Mick

133

General Mach Discussion / Re: CS Labs CSMIO/P-A

« on: July 28, 2018, 09:28:57 AM »

Sorry meant disconnect tach from the drive.

134

General Mach Discussion / Re: CS Labs CSMIO/P-A

« on: July 28, 2018, 09:22:51 AM »

Hi Allan/ Craig

The CSMIO has a max voltage input of 10v on the Analog I/0. I found channel 0 to be faulty putting out 10v continuously. The tacho for the motors puts out about 9v per 1000rpm. Does this mean until the tacho output voltage was adjusted to match the command voltage there was potentially approx 27v being fed into the CSMIO (At 3000rpm). Possibly causing the failure of Channel 0.

The only reason I ask is I am about to set up the Z axis and thinking maybe disconnect the Tacho wires from the CSMIO until the tacho output is matched to the command input?

Cheers
Mick     

135

General Mach Discussion / Re: Spindle Encoder Wiring.

« on: July 23, 2018, 01:08:43 AM »

Thanks Allan

Yes, think I agree with that. I'm still waiting for a reply from my last post on the Denford forum so I think I may be inclined to just give it a go.

Cheers
Mick

136

General Mach Discussion / Re: Spindle Encoder Wiring.

« on: July 22, 2018, 04:48:32 PM »

Apologies should be CSMIO/ENC Threading Module from CS Labs.

Cheers

137

General Mach Discussion / Spindle Encoder Wiring.

« on: July 22, 2018, 01:52:42 PM »

Hi All

Just in the middle or should I say the start of a conversion on my Denford Senior Lathe. I am using all the original Servos and drives as well as the original spindle motor. The VFD has been replaced with a Jaguar VXM. Had loads of help so far from the forum with tuning the servos and pleased with what has been achieved so far.

Moving onto the spindle. The spindle motor is wired up to the VFD with no major issues at the moment and working off a 0 to 10v signal. I am using the CSMIO/P-A controller with the add-on CSMIO/P-CNC for threading and spindle control. The encoder for the spindle has eight wires coming out the same as the X and Z axis but there is no information on the encoder. The wire colours are all the same as the X and Z encoders.

The X and Z encoders give this information.

A+ Brown
A- Yellow O
B+ Red
B- Green
Z+ Purple
Z- Blue Pin
5VDC White
GND Black

As the spindle encoder is the original to the machine the same as the X and Z Encoders. Would it be safe to assume I should wire the encoder with the above connections?

Or is there a way to check the wires from the spindle encoder to ensure correct connections. (With a multimeter)?

Appreciate any feedback.

Mick

138

General Mach Discussion / Re: CS Labs CSMIO/P-A

« on: July 22, 2018, 07:11:04 AM »

Hi Craig

Thanks for the info. Definitely worth buying one at that price.

Allan/ Craig

Probably needs a new topic but would you have any idea where to start with the wiring on this spindle encoder? I can't see any information on it but has 8 wires coming out.

Also, I am trying to identify what is attached to the back of the spindle. It looks like some kind of air pump which is attached to a fork that moves in and out. I have never used it and I did ask Denford what it was a few years ago who didn't know. Please see images.

Cheers
Mick

139

General Mach Discussion / Re: CS Labs CSMIO/P-A

« on: July 20, 2018, 01:48:26 PM »

Thanks Craig

I will have a look into it but want to complete the conversion first. Will be looking at the spindle and drive next week. I'm sure I'll get stuck again. LOL

Appreciate your time on this.

Cheers
Mick

140

General Mach Discussion / Re: CS Labs CSMIO/P-A

« on: July 20, 2018, 02:43:32 AM »

Hi Craig
Sounds good. Do love a bit of Math so let me know your thoughts on a suitable scope.
Cheers
Mick