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Author Topic: Allen Bradely drives to Sanyo denki motors ?  (Read 20954 times)

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Offline BR549

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Re: Allen Bradely drives to Sanyo denki motors ?
« Reply #20 on: September 24, 2012, 04:21:15 PM »
Yes that is correct. 

(;-) TP

Offline Hood

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Re: Allen Bradely drives to Sanyo denki motors ?
« Reply #21 on: September 24, 2012, 04:28:22 PM »
Ok so then it may just be the custom profile you have made up. Cant remember if you can save the drive parameters to a file with the older drives or not. If you can you could zip and attach along with your custom motor profile and I could see if I see an error.
Oh actually not sure if you can attach the custom profile, with the DSD drives you can save the motor data base but cant remember if you can with the DDM's, will have a look. Also the DDM's are restricted to one custom motor profile where you can have as many as you like with the newer drives, not that that matters to you, just thinking out loud really. Anyway will start up mater and see.
Hood

Offline Hood

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Re: Allen Bradely drives to Sanyo denki motors ?
« Reply #22 on: September 24, 2012, 04:36:49 PM »
Ok just looked and you can save the drives parameters, file menu then Save or Save As.
I assume if you have the custom motor profile loaded then that will be saved as well.
Hood

Offline BR549

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Re: Allen Bradely drives to Sanyo denki motors ?
« Reply #23 on: September 24, 2012, 04:39:34 PM »
I will create a new file and try again.  The best I can do with testing is make the motor jump about 60 degs with auto tune and toggling back an forth with forward and reverse.

That seems to indicate a commutation error but there are ONLY 6 possible combinations to try and I have tried all of them as well.

I am thinking MAYBE it is a HALL offset problem . To my eye it seems the commutation is off by 120 degs but that is just my looking at the sequincing and I could be wrong. BUT I have tried 0/60/120/240/300 deg hall offsets ,all failed as well.

The drive ONLY stores 1 custom motor config, but in the software you can create as many as you like and reload .

(;-) TP

Offline Hood

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Re: Allen Bradely drives to Sanyo denki motors ?
« Reply #24 on: September 24, 2012, 04:43:44 PM »
On the custom motors, yes that is true but you lose that custom motor profile when you write a new one so if you want it back you need to recreate it. Obviously if its in the drive then thats fine but anyway its nothing to do with the issue at hand so  is just a distraction, I was just typoing as I was thinking to remind myself of the DDM's ;D

Is there a chance the encoder could have been moved?
Do you have a dual trace scope and some means to rotate the motor such as a lathe?
Hood

Offline BR549

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Re: Allen Bradely drives to Sanyo denki motors ?
« Reply #25 on: September 24, 2012, 04:56:53 PM »
The motor was new out of the box. AND I have 3 more new and 4 older ones off the mill. 

I will go out and open a nother new box(;-) and try that.

(;-) TP
Re: Allen Bradely drives to Sanyo denki motors ?
« Reply #26 on: September 24, 2012, 05:08:18 PM »
 The best I can do with testing is make the motor jump about 60 degs with auto tune and toggling back an forth with forward and reverse.

 

(;-) TP

Please excuse the interrupt men,
 I had a very similar reaction once when I had the wrong encoder count entered in the motor data. Corrected that and all was well.
I assumed 2000 and it was actually 500.
Carry on.
Regards,
Russ :)

Offline BR549

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Re: Allen Bradely drives to Sanyo denki motors ?
« Reply #27 on: September 24, 2012, 05:23:38 PM »
OK broke out a new one and same results. I have tried all 4 drives and same results so it has to be a setting somewhere.

(;-) TP

Offline BR549

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Re: Allen Bradely drives to Sanyo denki motors ?
« Reply #28 on: September 24, 2012, 05:25:59 PM »
On the old servo drives (SDs) 2000 was the count and it worked fine as well in the MACH3 setup.

But I agree a wrong encoder count will cause the motor to jump(clog) on startup.

(;-) TP

Offline Hood

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Re: Allen Bradely drives to Sanyo denki motors ?
« Reply #29 on: September 24, 2012, 05:26:21 PM »
Attach your parameter file and I will see if I can find the issue.
Hood