G540 wiring diagram for dummies? :)

[bkboggy]

Hi,

I got myself G540 along with Keling's motors and power supply. I also bought stepper wire, estop switch, limit switches and home switches (no clue how to wire these or where.... really). I understand I need to buy some kind of resistors and some wire to wire things. I have no clue which ones I need.

I looked at the diagrams provided on the website and in the manual and I'm still a bit confused on what should go where. If someone can provide me an easy-to-understand diagram or some kind of information on how to wire all of that properly, I would really appreciate it.

-BK

[jalessi]

What model Keling steppers do you have?

[bkboggy]

KL23H276-28-4B (2 motors), KL23H284-35-4B (1 motor), KL-350-48 power supply.

[jalessi]

KL23H276-28-4B wiring pin out for G540.

[jalessi]

G540 wiring diagram for KL23H276-28-4B motor

[bkboggy]

Thanks for those diagrams! First diagram is for 28-4B and the second one is the 35-4B, just in case anyone gets confused. You wrote 35-4B for both, heh


Alright, so correct me if I'm wrong:

Motors have 4 wires: Black, Green, Red and Blue.

Both motors are wired the same way, except they use different capacity resistors.

So... I take my wire from the motor, solder it to the stepper wire, solder stepper wire to the appropriate 4 pins on the connector: 6, 7, 8, 9.

Then I take a resistor and solder it to pins 1 and 5?

Pins 2, 3 and 4 are supposed to be ground pins. Now, how exactly do I wire them? My stepper wire is shielded if that does anything.

Limit switches seem to be a no-brainer to connect, but how do I connect home switches?

[jalessi]

You are on the right track.

You don't need separate home and limit switches, one switch will do both "dual" functions.

[jalessi]

Mach home limit combo for G540

[bkboggy]

Oh, thanks. I guess I wasted some money buying the lesser home switches with 2 connectors. At least they were cheap.

What is the difference between home and limit switch? Limit switch breaks the circuit if it becomes open, but what does home switch do?

[Mariss Freimanis]

A home switch expects to get hit every time an axis is sent to the 'home' position. The home routine finds the 'absolute zero' location for that axis.

A limit switch getting hit is an e-stop emergency. It means the axis is going where no axis was meant to go. Limit switches are placed behind home switches, just short of mechanical damage territory.

Mariss

[jalessi]

The home switch is to reference the home or starting position of the axis

The limit switch is to prevent axis over travel.

Jeff...

[Crevice Reamer]

Hi BK!

You can use THIS wire for motor cables and home/limit switches. Ground the drain wire ONLY at the driver end.

http://cgi.ebay.com/ws/eBayISAPI.dll...2BSI%26otn%3D4

You won't need any db9 motor connectors with the G540, as they come WITH it. The G540 also has circuitry for simple spindle speed control and outputs for dc relays to turn coolant pump (Or router motor) on or off.

These inexpensive relays are very good :

http://www.surpluscenter.com/item.as...tname=electric

You will need one of THESE 1/4 Watt 3.48K resistors for your 387:

3.48KXBK-ND

and 2 of THESE 1/4 W 2.8K resistors for your 270s:

2.80KXBK-ND

They only come in a pack of five, so about $1 for 10. With shipping it's about $3.50

http://digikey.com/

If you don't already HAVE them, these are excellent home switches:

http://cgi.ebay.com/6-CNC-Limit-Swit...em330307070296

They are NO, so only for home switches. Limit switches need to be NC. the whole set of 6 switches costs less than ONE switch would cost at Radio Shack.

You will also need an estop switch. This one from Keling only costs 10 bucks and works fine:

http://kelinginc.net/CNCPackage.html

Keling has Home/limit switches, parallel computer cable and helical connectors on same page as Estop/

The G540 is so small that many are mounting theirs INSIDE the computer case.

Camtronics has a case MADE for the G540:

http://s120220635.onlinehome.us/stepper-components.asp

CR.