Centroid Community CNC Support Forum

Rosmadi wrote: ↑Thu Apr 09, 2020 4:39 am Ok thanks marty, thanks a lot cncsnw,, i wil work on that,, wish me nothing bad is gone happen

Rosmadi wrote: ↑Tue Apr 21, 2020 1:29 am What is COM what is GND,,? I tested lead 24vdc to the GND , no reading, i got reading with COM lead, and from acorn COM, should i hook to which ? COM or GND to the drive?

martyscncgarage wrote: ↑Tue Apr 21, 2020 8:26 am

Rosmadi wrote: ↑Tue Apr 21, 2020 1:29 am What is COM what is GND,,? I tested lead 24vdc to the GND , no reading, i got reading with COM lead, and from acorn COM, should i hook to which ? COM or GND to the drive?

GND is Earth safety Ground. Sometimes referred as Chassis Ground. For example, you should have a ground from the electrical circuit feeding the machine. From it, all metalic parts of the machine and it's components are connected to. If a hot wire (line wire) makes contact, it blows a fuse or trips a circuit hreaker.

Com(mon) is the negative side of the DC power supply used to control a circuit for a given device. For example The +24vdc of Acorn's logic power supply feeds Acorn. The -24vdc (Com) is the return path.

I'm a little concerned that you may not have basic electrical understanding of what you need to know in order to carry out the conversion safely. You should consider finding someone to help you or check over your work.

Marty

Rosmadi wrote: ↑Tue Apr 21, 2020 10:29 am

martyscncgarage wrote: ↑Tue Apr 21, 2020 8:26 am

Rosmadi wrote: ↑Tue Apr 21, 2020 1:29 am What is COM what is GND,,? I tested lead 24vdc to the GND , no reading, i got reading with COM lead, and from acorn COM, should i hook to which ? COM or GND to the drive?

GND is Earth safety Ground. Sometimes referred as Chassis Ground. For example, you should have a ground from the electrical circuit feeding the machine. From it, all metalic parts of the machine and it's components are connected to. If a hot wire (line wire) makes contact, it blows a fuse or trips a circuit hreaker.

Com(mon) is the negative side of the DC power supply used to control a circuit for a given device. For example The +24vdc of Acorn's logic power supply feeds Acorn. The -24vdc (Com) is the return path.

I'm a little concerned that you may not have basic electrical understanding of what you need to know in order to carry out the conversion safely. You should consider finding someone to help you or check over your work.

Marty

Hi marty, yes i dont have the knowledge about electronic, dc, but i know a bit about ac, i can make a wiring for a house,, but about this COM,GND,PE, things make me a confused, no i think i got the picture,, leave the GND,PE alone right? COM is -0v ,, and the COM from acorn to the drvie i just pick any COM lead, is that ok? Or to Xcom lead?

martyscncgarage wrote: ↑Wed Apr 08, 2020 10:15 am My best guess:
DI1 = Forward
DI2 = Reverse (Speed Position Switching)
DI8 = Fault Reset
COM = Digital Input Common

DO3+ = Drive Failure (Input X)
DO3- = Drive Failure (Acorn COM)

AI3+ = Acorn Spindle Analog Ouput +
AI3- = Acorn Spindle Analog Output COM

of course you have to set the parameters appropriately.

Marty