Emcoturn 120 lathe retrofit

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16 May 2016 13:25 - 16 May 2016 13:26 #74743 by LutzTD
Replied by LutzTD on topic Emcoturn 120 lathe retrofit

What spindle motor are you using? We ended up with a 3 HP Black Max Inverter Duty motor from Automation Direct. We also used an Automation Direct VFD...

-Tom


motor is a Baldor EMM3613 inverter duty 5hp, I plan to add a shaft ground as well


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Last edit: 16 May 2016 13:26 by LutzTD.

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18 May 2016 20:07 #74826 by LutzTD
Replied by LutzTD on topic Emcoturn 120 lathe retrofit
mesa card showed up today Looks like I need to get my power supplies hooked up so I can play. first glance at the linuxcnc setup is that I will need to identify all of the I/O connector pin locations. Does anyone have a list of standard pinouts (if there is such a thing) so Im not doing these at random?

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19 May 2016 10:10 #74834 by cncbasher
you dont mention which mesa card , to start a new config with the card connected , use pncconf.

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19 May 2016 12:00 #74837 by LutzTD
Replied by LutzTD on topic Emcoturn 120 lathe retrofit
Of course reading the manual was my last thought.... Anyway here is the pinout for the Mesa 7i76e card I am using.


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19 May 2016 16:34 #74855 by LutzTD
Replied by LutzTD on topic Emcoturn 120 lathe retrofit
stepper pinout


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19 May 2016 17:19 #74857 by LutzTD
Replied by LutzTD on topic Emcoturn 120 lathe retrofit
heres what I have for the spindle setup on the Automation Direct GS2 VFD


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20 May 2016 11:12 #74876 by BigJohnT
For an Automation Direct GS2 use the gs2 component and connect via modbus so you have full spindle control. You will need the braking resistor.

The hal on my BP with a GS2
# Spindle Drive
loadusr -Wn spindle-vfd gs2_vfd -s 2 -p none -A 0.5 -D 0.5 -R -n spindle-vfd -v
# connect the spindle direction pin to the GS2
net gs2-fwd spindle-vfd.spindle-fwd <= motion.spindle-forward
# connect the spindle on pin to the GS2
net gs2-run spindle-vfd.spindle-on <= motion.spindle-on
# connect the GS2 at speed to the motion at speed
net gs2-at-speed motion.spindle-at-speed <= spindle-vfd.at-speed
# connect the spindle RPM to the GS2
net gs2-RPM spindle-vfd.speed-command <= motion.spindle-speed-out
#vfd panel fan
net gs2-run => hm2_5i25.0.7i77.0.0.output-03

# Spindle Encoder
setp hm2_5i25.0.encoder.03.scale 10000
net spindle-position hm2_5i25.0.encoder.03.position => motion.spindle-revs
net spindle-velocity hm2_5i25.0.encoder.03.velocity => motion.spindle-speed-in
net spindle-index-enable hm2_5i25.0.encoder.03.index-enable <=> motion.spindle-index-enable

JT

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20 May 2016 14:29 - 20 May 2016 17:59 #74881 by LutzTD
Replied by LutzTD on topic Emcoturn 120 lathe retrofit
can you explain how to connect using modbus? I have an idea kinda what it is but I wouldnt know how to even start setting it up. Looks like the 7i76e has a rs-422 plug but the GS2 is rs-485, they seem close, would I need to get an adapter card or something? Also, why would I get better control with modbus over using the direct outputs. Im really new at this so please excuse so many questions.


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Last edit: 20 May 2016 17:59 by LutzTD.

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20 May 2016 23:22 #74899 by BigJohnT
You connect the GS2 to your serial port. Why is it better... well you get a lot of information back and you can change speeds and reverse on the fly.

JT

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21 May 2016 03:45 #74903 by LutzTD
Replied by LutzTD on topic Emcoturn 120 lathe retrofit
thanx. with direct connection set up the way I had worked it out I would be able to stop start, reverse or forward, and speed control on the fly. spindle rpm comes from the spindle encoder. I dont think the direct connection give any feedback, does the modbus allow a check method like a feedback loop? would the modbus do this more efficiently or offer some other feedback? I somewhat understand the direct lines but the serial I dont understand very well.

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