Machsupport Forum

Third party software and hardware support forums. => Third party software and hardware support forums. => Topic started by: native34 on July 15, 2015, 04:13:52 PM

Title: Encoder setup help??
Post by: native34 on July 15, 2015, 04:13:52 PM

Good afternoon I have a question i'm sure one of you can help me with. I am building a new cnc mill. It is servo based. Bare in mind all my previous experience is with steppers. I'm using amt102-v encoders. When setting these up in Mach3 how do I go about getting this setup correctly? I have the encoder set to 500ppr. They are connected to kelinginc 850 oz/in servo motors DC, I'm also using the DG4S 8020 sold by cnc4pc.

Title: Re: Encoder setup help??
Post by: native34 on July 16, 2015, 06:45:08 AM

Any help please?? This problem is really getting frustrating.

Title: Re: Encoder setup help??
Post by: BR549 on July 16, 2015, 07:40:25 AM

The encoder wires to the DRIVE.  Mach3 does not close the loop it is closed in the drive.

(;-) TP

Title: Re: Encoder setup help??
Post by: native34 on July 16, 2015, 09:37:26 PM

Thank you. I understand that part. Where I'm having the issues is understanding how the ppt or cpr is used to configure the motor tuning and setup in Mach 3.

Title: Re: Encoder setup help??
Post by: BR549 on July 16, 2015, 11:46:55 PM

  if it is a quad encoder and you have 1000 counts then you use 4000 cpr. That does NOT include any gear reduction or screw tpi

CPR * reduction*screw pitch = steps per

(;-) TP

Title: Re: Encoder setup help??
Post by: native34 on July 17, 2015, 10:00:59 AM

I have an amt102-v. I don't know if it is a quad encoder. It says it is a capacitive encoder. I can set the ppr (pulse per revolution) using a dip switch. Right now I have the encoder set to 500 ppr. My servo drives are set to 2x mode. I believe this gives me 1000 cpr.

Title: Re: Encoder setup help??
Post by: native34 on July 17, 2015, 09:07:59 PM

What is an acceptable servo error, or encoder error.

Title: Re: Encoder setup help??
Post by: native34 on July 18, 2015, 06:32:45 PM

Hello is there anyone out there??