1. ## G203V wiring

I am wiring up a G203V and not 100% sure on what to do.

I am wiring it up with a CNC4PC C11G BOB.
Terminal 7 (Disable)
Terminal 10 (Common)

Where do these hook up on the C11G?

Also, for a 4.8v stepper I should us a 120k Resistor?

2. Hi,

I'm new to this (electronics)

I'm starting to build my control box tonight.

On the wiring of the G203v to your bob. From what I've read or seen here on the forum.
No wire to the Terminal 7 (Disable)/(not used).
Terminal 10 (Common) wire to one of the common pins from the bob (18-25)

To find the G203v resistor for your motor. you need to know the amp per phase. Formula for finding K ohm resistor is:
I = amps
47*I/(7-I)=K ohm
example: amps=3.2=I
47 times 3.2 = 150.4 divided by the sum of 7 minus 3.2 = 3.8
so now we have 150.4 divided by 3.8 = 39.6 k ohms resistor
I got a 39 k ohm 1/4w, 5% resistor

Like I said I'm a noob, maybe somebody (pro) will chime in if I've got something wrong.
Jack

3. Originally Posted by tauntdesigns
Hi,

I'm new to this (electronics)

I'm starting to build my control box tonight.

On the wiring of the G203v to your bob. From what I've read or seen here on the forum.
No wire to the Terminal 7 (Disable)/(not used).
Terminal 10 (Common) wire to one of the common pins from the bob (18-25)

To find the G203v resistor for your motor. you need to know the amp per phase. Formula for finding K ohm resistor is:
I = amps
47*I/(7-I)=K ohm
example: amps=3.2=I
47 times 3.2 = 150.4 divided by the sum of 7 minus 3.2 = 3.8
so now we have 150.4 divided by 3.8 = 39.6 k ohms resistor
I got a 39 k ohm 1/4w, 5% resistor

Like I said I'm a noob, maybe somebody (pro) will chime in if I've got something wrong.
Jack
Jack and Dneisler,

No wire to pin 7 (disable)

Pin 10 is wired to the 5 Volt DC supply ground which does translate to pins 18 thru 25 on the breakout board.

Just wanted to let you know that Jack is correct in his wiring. I did not calculate the resistor value, by the way.

Jerry

4. Hi Jerry,
I feel better now about the wiring I'll be doing later tonight. Thanks

Dneisler,
On the CNC4PC C11G bob... pins 18 - 25 are labeled as GND on the output screw terminal.
Example: output screw terminal pins
1,GND,2,GND,3,GND,4,5,GND,6,7,GND,8,GND,9,GND,14,16,GND,17

It seems I'm putting together a similar X3 controller.

Jack

5. Be aware that the 203V drive uses Gnd Common (not +5) and that the step & dir need to be Active High in software.

Tom Caudle
www.CandCNC.com