Okay guys been working hard on my overall machine wiring diagram in draftsight. It is looking good and I am liking the ideas you all have provided me. I have it setup now in a manner that any limit trip is basically the same as an estop trip. That is the power to the motor drive portion of the Teco is killed. The estop works the same way. Now the power to the logic side of the Teco servo drive will not be killed in either instance because after talking about it with art we realized that cutting power to the drive inadvertently might cause a runaway motor due to losing its encoder power. I would image that the Teco drive has built in safeties for such an instance and shutdown the drive side but we have decided to run power to the logic side of the drives right off the main disconnect so it will all come on with the computer and the other power supply. The drive circuit will all be killed with either a limit or estop trip and we have a momentary switch wired across the limit switch circuit to allow us to recover and jog off a limit should we ever hit one. The soft limits as started before should keep us out of that deep water. I like the fact that a runaway motor would be depowered in this setup. In case of a catastrophic fire or something I will just kill the main disconnect after I slap the estop mushroom. Right now I am carefully going thru the manual for the Teco and the Mesa 7i77 card to figure out the pinout for the CN1 connector on the drive which controls the logic and encoder feedback to the computer as well as outputs the analog +/-10v signal. We are apparently going to run in what is termed speed mode although I have mostly heard it referred to as velocity mode before in these circles. There is apparently a different wiring scenario for torque mode and I am trying to differentiate between the two. Also I have yet to figure out how to properly wire the enable circuit.
Been reading thru the Mesa manual too and it seems this 7i77 ,5i25 combo is one cool customer. Tons of I/0 and up to six live axes. Figured out how and where to plugin my MPG and I think I understand the Field IO input. Sounds pretty straightforward so far. Does it seem like if you use the 24vdc for field IO input and select a certain switch setup on the board you don't need a 5v power supply? It sounds like it can take it from the 5i25 PCI card somehow. That is nice if it is correct anyway. Again just getting started looking thru this stuff. So far the manual for the cards and the drivers seem very well laid out......peace Pete On Friday, February 15, 2013, Stuart Stevenson <[email protected]> wrote: > I don't know the room you have but you could mount a pillow block opposite > the motor to support the pulley. > > -- > dos centavos > ------------------------------------------------------------------------------ > Free Next-Gen Firewall Hardware Offer > Buy your Sophos next-gen firewall before the end March 2013 > and get the hardware for free! Learn more. > http://p.sf.net/sfu/sophos-d2d-feb > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
