OK, I'm reading the manual (when all else fails,RTM)
I may be miswiring here. I've got a common from pin17 (ground) on the galil 1700 to pin 2, signal ground, on the AMC servo amp. Another wire from MOCMDW(pin23) to pin4(+refin). The block diagram in section G engineering reference shows a wire from pin5(-refin) to the controller. I don't have this wire; where should I connect on the Galil 1700. (FWIW, I've got five drives working without this)
I'll keep reading, I'm sure to find more issues.
Karl
P.S. Here's a manual section on this. I think I should just tie pin5 (ref-) and pin2(signal gound) together. Correct?
P.P.S. I just found the wiring instruction in Galil 1700.pdf manual page 30 shows the wiring exactly as i have it.
3.6 Reference Input Wiring
Use of a twisted, shielded pair for the input reference wires is recommended. If the reference source can float (remain
ungrounded), connect the cable shield to both the reference source common and the amplifier's signal ground. It is
recommended that the input be connected directly to the amplifier's differential input (if applicable). Connect the reference
source "+" to "+ref” input, and the reference source "-" (or common) to "-ref” input. If the reference source ground and the
amplifier power ground are connected to the master chassis ground, leave the source end of the shield unconnected.
The servo amplifier's reference input circuit will attenuate the common mode voltage between signal source and amplifier
power grounds. In case of a single ended reference signal, connect the command signal to “+ref” and connect the
command return and “-ref” to the signal ground
Last edited by Karl_T; 11-19-2008 at 09:36 AM.
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