On Sat, 24 Mar 2012 11:28:42 -0600, "Gordon S. Hlavenka"
wrote:

So the boss has brought me this puzzle to work on: It's a GE Fanuc
servo amplifier, model A06B-6079=-H301.

wrote:
Which control did it connect to?

Apparently it came from some sort of CNC machining rig.

I've had it opened up and peered at all the bits; there are some big
IGBTs in there, no surprise, and I could take them out and test them
with a meter to check for gross faults. But what I really want to do is
set up a jig where this thing _thinks_ it's connected up to a PLC on one
side and a raft of servomotors on the other. Then I can put it through
its paces and really verify that it's working as designed.

Of course I don't actually _have_ PLCs or servomotors, but I have 8051s
and arduinos and power resistors and I know how to lie to hardware :-)

To do this I need to know just what sorts of signals go into this amp:
digital commands I'm guessing but what does the data look like?
There'll be feedback coming back from the motors but what? Tach pulses?
Analog voltages? Position sensors? All of the above? There's a
knowledge threshold I need to step over here, and I just need a bit of
help to get to that point. Someplace there's a book...
Of course it came out of some sort of CNC machine. I know that. I
have the connection manuals for the Fanuc 5T and 3M controls. They
would show which wires went where so you could figure out how to
connect it to your faux PLC and servos. That's why I asked which
control the boards came out of. Why don't you ask what control it came
out of? If I have the correct manual I can scan the pages and email
them to you.
Eric