Will the DC all in one board run these motors?

[countryguy]

Trying to do a supermax YCM30 mill upgrade. It has a bandit 3 controller from the 80s. The motors are these:
http://www.ebay.com/itm/Danetics-Perman ... 0896128769

I'm also wondering about the 500 L encoder on them. I assume this is a 500 line -vs- the newer 2K units. May I use the existing encoder if I can sort out the wiring on the quad-diff output? Also I notice on the specs that you have a Danaher spec which is now Danapar. In doing some reading and research, I assume that I could potentially use any hollow shaft 2K quad diff encoder w/ 5Vdc 3 channel output possibly correct? Tis all new to me . So TIA for the newb Q&A

PS I also posted this on your CNCzone board here:
http://www.cnczone.com/forums/ajaxcnc-c ... 61bfa2db2d

Thanks a ton gang.

[Centroid_Liviu]

Those motors should work great with the ALLIN1DC. The ALLIN1DC can handle up to 40 in-lb, 180VDC, and 15 amps (continuous, the 39 amps on the label is your peak). While your encoders may carry the neccessary signal they almost certainly are too low of a line count. Typically anything under 1000 line will not give you enough resolution. To achieve reasonable accuracy and smooth motion, the encoder/motor/ballscrew configuration must achieve a minimum resolution of 20,000 encoder counts per inch of travel (787 counts/mm). A typical knee mill which uses a 5tpi (turns per inch) ballscrew and has the motors belted at a 1:1 ratio, a 1000 line encoder just meets the minimum counts per inch at 20,000 for smooth motion, this will work however a 2000 line encoder (8000 counts per rev) would be a better choice. Older 250 and 500 line encoders will not work to satisfaction. Full details with examples can be found in this forum post.

http://www.ajaxcnc.com/ajaxbb/viewtopic.php?f=20&t=4

[countryguy]

Thanks a bunch~ appreciated. Do you happen to know if your 2K add-on encoders are the Dynapar HC20 or F18's ??

[Centroid_Liviu]

Depending on the shaft size some are F18 and some are F14, they are both functionally the same.

[countryguy]

Cool... Thanks for that info! The shaft is .625 and I now I think I cannot use either?? Hmmmm Another twist in the road. Ohhh what fun. a CNCZone post is here w/ pics:
http://www.cnczone.com/forums/ajaxcnc-c ... ost1622804

[cncsnw]

The shaft is .625 and I now I think I cannot use either??

Is that the drive shaft, or the back shaft?

For NEMA42 servo motors, the drive shaft (front) is always 5/8".

The back shaft, where the encoder mounts, is usually reduced. Typical dimensions are 1/4", 3/8", or 6mm. You can probably find ones that are 1/2", 8mm, or 10mm as well. I have never seen a motor with a full 5/8" back shaft, but they might exist.