Has anyone already done this? Wiring the servo to the drive seems straightforward, but I'm a bit confused on the encoder wiring. If someone has a table showing the matchups for the pinouts I would be much appreciative. Here is a picture of the Haas side of the cabling, can someone match me to the appropriate DB9 pins to connect up to the ALLIN1DC board?
1) Does the indexer need to be connected all the time? I plan only to use the indexer occasionally, and would like to remove it from the machine when not needed. (If this is possible, I would get the mating bulkhead plug for the Haas cabling and install it in the control cabinet, and then wire the backside of it to the DC1 and DB9 encoder input). I guess there would also be wiring to the axis home switch inputs on the ALLIN1DC, right? If anyone is familiar with the way Haas machines handle the rotary table connection to the mill, this is what I'd like to mimic. (E-stopping the machine, connecting the cables, selecting the rotary table in Setting #30 and then releasing the e-stop and re-homing the machine) I assume that without some similar procedure, the Centroid would alarm out because it isn't seeing encoder signals and wouldn't complete machine homing upon startup.
2) Plans are in the works to add a "W" axis glass scale to the quill of my Trak DPM, and since I am accustomed to seeing the rotary axis on the Haas mill I run at work designated as the "A" axis, is it possible to configure Centroid to display the rotary as such?
3) As far as I know, I have only the standard mill PLC program that came with my ALLIN1DC when I installed the system on my mill about a decade ago. (I apologize, I didn't think to run a system report prior to starting this thread. I can reply to it tomorrow with the report attached if necessary.)
4) It's been a long time since I tuned the SWI original equipment servos to the ALLIN1DC board; is there a different procedure to do so with a rotary axis? If so, can someone point me to the documentation?
As always, I thank in advance those who take the time to respond.
I was able to get some info on the Haas indexer. I asked what type of home switch is used, and whether it is NO or NC. I also asked what the line count was on the encoder. He replied it was a 2,000 line encoder and locates home with a prox switch that goes closed at the home position. I am not very familiar with prox switches vs. regular microswitches that I used for the other three axis limits, but based on the pinout schematic, I assume it is a 2 wire DC type. But I am unclear on how to wire that. Google searching leads me to believe polarity matters. But I don't know how to determine which wire is positive and which is negative. The Haas pinout schematic shows a wire labeled BLK GND on pin "T" and WHT/BLK HOME on pin "D". Intuition says that WHT/BLK HOME is the positive lead of the prox switch. I did as suggested and used an Ohm meter on those two wires while running the servo from a 12v car battery. There is a point where it went from open circuit to about 200 ohms, so I marked that spindle position and assume that is where the home switch registers. Again, not being familiar with prox switch function, is 200 ohms considered "closed"? And is that even a valid check, or should I be running actual voltage thru the circuit? Do prox switches typically have a working voltage specification (my ALLIN1DC limit switch inputs are configured as sinking 24vdc)? Can it be damaged by reversing polarity? Can I "bench check" by hooking one lead to the positive terminal of that 12v battery I am using to run the servo, and the other lead to a small 12 v light and then back to the negative terminal of the battery? And if it doesn't flash the light as the spindle moves past the mark I made, switch the prox switch leads and try again?