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The original power supply should be fine, you can disconnect the tach's if the motors have, I usually just remove the brushes.
Al.
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What Drives and Power Supply do I need? I have narrowed it down to the Granite drives or the Dugong drives for my conversion and I am wondering about the power supply.
Can I use the original power supply that is with the mill ,or do I have to have a power supply for each individual drive.
The mill is an Excello 406 cnc mill it has 85volt 28amp 1700rpm servos and it has the old Bendix Dynapath 5M control and tape reader and old Westamp drives that still work. I am also thinking of going with Mach3 too.
If anyone has any other opions on the drives or power supply or anything else please let me know what you think.
Thanks Mike
The original power supply should be fine, you can disconnect the tach's if the motors have, I usually just remove the brushes.
Al.
CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
I have just found out that if you run 2 servos off of the Granite drive its only good for 20amps per drive and my motors are 28amps so unless someone can tell me different I guess I will have to go with the Dugong drives. This stinks because I was really leaning towards the Granite drive.
Thanks Mike
Are you sure that is maybe Peak current and not continuous?Originally Posted by CATCH22
Al.
CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Hi AL,
At 20 amps per motor on the drive and my servo motor says 28amps on the tag do you think that these Granite drives would still work for me if the 28amps are peak amps.
Thanks Mike
Last edited by CATCH22; 05-13-2011 at 08:46 PM.
If they are replacing the Westamp drives I am thinking of that were fitted to many of these type of mills, I would think they should.
The 10F which was the highest rated was good for 15A continuous.
Al.
CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
I just started taking apart the old controller and I got looking at one of the other servo motors and it says .7 amps 85volts can this be right only .7 amps the tag I was trying to read before was upside down and I misread it I think.
Thanks Mike
If they are off a 604, they would be a bit bigger than that?
My Excello SEM's are 17A at rated stall torque.
Al.
CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
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