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Messages - Engineer

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1
Unfortunately Galil systems aren't that common, and from the quick scan of the old product info page, it could be set up a few different ways.

You need to break things down into sections that you can troubleshoot.
I'd be looking at the following areas.

Encoders.
Are they working?
Do you have a scope so you can check they are producing the correct signal?
Is that signal getting back to where it needs to (i.e. the Drive or Controller)?

Drives.
How are they controlled? Step/dir or 0-10V?
If analogue, a quick check is to get a low voltage source (1.5V battery is ideal for a basic test) with a 1k resistor connected in series, and with the drive analogue input wires disconnected and the driver powered/enabled, connect the battery/resistor across the analogue input terminals. The motor should spin reasonably slowly. Then try connecting the battery/resistor the opposite way, and make sure the motor turns at a similar speed in the opposite direction.

I narrowed it down to the encoders on the one axis. I pulled them both apart one by one and scoped the outputs. The axis gives absolutely nothing back when turning it, and I double checked the cable by swapping the motor plugs and verified I got the good axis encoder feedback.

Thanks for the help. I got the other axis going. I think there were a couple problems going on -- somehow in the reinstall the settings got switched back to steppert for the one servo so it just wouldn't stop. I changed it back to servo and the good axis is going again, but the other axis is still dead so I need to figure out how to replace that encoder.

Thanks again!

2
I swapped the inputs and magicniner suggested, and now both the motors move when I command a jog, and at full speed.

I also tried reinstalling Mach3 along with the plugins.

Before it was just the X axis that freaked out, but now that I swapped all the connections to the opposite motor they both freak out at the same time.

The galil motion controller, along with the motors, and drivers are all brand new but have been sitting around for nearly 20 years so its not like they have lots of hours on them.

Any ideas from here?

3
The table crashed. I think it might have been what caused the issue. Anyway now the X axis motor runs full speed ahead. The Y table moves just fine, but X rapids absolutely insanely fast and does not stop if i let go of jog. Even a single "step" and it takes off.

I've made sure I was in inches units, I double checked and changed acceleration and velocity settings and tried turning them down. It works but it still wont stop and eventually speeds up to same speed before I hit reset.

I've power cycled everything, the "DRO" is receiving feedback from the encoder on the motor so I don't think that's it I have no idea what to check next. Feedback on both of them is funny though it steps through "thousandths" instead of inches even though the steps per unit is correct and just worked the other day. The only think I can think of is it is a bad interface card?

Any help would be appreciated. Running mach3 demo, with a Galil 1820 driver and brushed servo motors.

4
I answered my own question after uselessly trying to contact Galil support only to have them refuse to help me find software that is compatible with their equipment.

Grab the mach3 "ST" plugin instead of the other one. Motors run fine now and it makes a lovely circle now.

Hope this helps someone else.


5
I've got a Galil DMC1820 motion controller and the computer that ran it before has died so I'm trying to get this thing setup in Mach3 on a new computer.

It's run into a ICM-1900 which breaks out all the controls and pushes it out to the XY table which is run by a MCG Brush type servo amplifier model DMC 12D.

When power is on the controller holds the servo position so that you cannot move it so I know everything is "wired" correctly, but no matter what I do with mach3 I can't figure out how to get anything to turn.

The Galil plugin has been used, the computer recognizes the PCI card, and Galil drivers are installed. The card has been selected in Mach3, along with the index checkboxes. I do not know how to configure the motors as none of the "pins" are the same as in the ICM-1900. Most of the pins are in the ~80 range.

Any assistance would be appreciated. I'm running Mach3 on windows XP with the demo program. It is just controlling an XY table for a laser so I am using the plasma module.

Thanks!

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