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Author Topic: DMC-4080 on-board amp hardware questions  (Read 3306 times)

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DMC-4080 on-board amp hardware questions
« on: January 10, 2014, 12:24:34 PM »
Hello forum,

I have recently purchased a surplus dmc-4080 Ethernet controller that has two amp-43140 in it.  They are the 20w brushed motor amps.  I plan on retrofitting my old stepper BOSS Bridgeport to servo motors.  I have brushless servos and AMC B30A8 amps.  I didn't realize the dmc-4080 that I was purchasing had the amps installed in it.

My questions about the dmc-4080 controller that I have are:

1.  Can I use the controller with external amps as though it didn't have the 43140 amps in it?  That is, can I configure the axises and will it output the +/-10v drive control signal or step and direction, depending on how the axis is configured, from the "external driver" DB connector?  The manual infers 'yes', but in practice how well does that work out?  Can an axis be configured as a stepper while the brushed amps are installed?  I will need three axis configured for the AMC amps and possibly an axis for the spindle and an axis as a stepper for 4th axis (rotary or 3d printer head).

2) The amp power jack is marked "+/- 20-30V"  If I use the controller without using the amps can I power the controller with a +25v supply wired to the +terminal of that connector?  Will powering it in that way harm the internal 43140 amp?

Thank you in advance.


Offline smurph

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Re: DMC-4080 on-board amp hardware questions
« Reply #1 on: January 15, 2014, 11:22:48 PM »

I have not actually seen a 4000 series controller with the amps built in.  All I can say is read the Galil docs a couple of times and then re-read them.  The last thing you want to do is brick it.  But I feel like the integral amp boards can be used.  If not, I'm sure Galil will reconfigure it for a reasonable price.  I was just reading the docs and I thing it is certainly possible to use the controller though.  The only thing is the amp enable outputs are a bit different on the amp controllers.  It may require removing the cover to configure them.  An the voltage ranges may not be available.  Regardless of if it has amps, you will need to provide power to that plug.  The amps are powered by a different power source I believe.

I can tell you for certain that the 4000 series controllers are really sweet.