g540 complete wiring

[bel630]

hello..
just receive 3 axis kit from keling yesterday..
after study wiring diagram from keling, i can't understand about relay and vfd drive, how many volt power supply i need for relay? what relay and vfd drive actually use for?

my kit come with 3 nema 34 stepper, what kind of resistor to use?

Thanks...

[Fastest1]

Bel630, are you talking current set resistors for the steppers and the G540? The voltage supply for the relays (coolant, vacuum whatever) is any voltage between 0 & 50vdc if I remember correctly.

[Fastest1]

What steppers did you get from Keling? Model #?

[bel630]

What steppers did you get from Keling? Model #?

i'm use NEMA 34 KL34H260-35-4B..

[Fastest1]

That is a 3.5 amp stepper according to the specs. It might not need a current set resistor at all, but I would confirm it before I went direct.

[bel630]

That is a 3.5 amp stepper according to the specs. It might not need a current set resistor at all, but I would confirm it before I went direct.

no need current set resistor? that mean just ignore pin 1 & pin 5?

[Fastest1]

This was answered by someone else in another thread, they suggested a 3.48k resistor. The max output on any axis with a G540 is 3.5a so I thought maybe it wasnt needed. I think my idea was wrong

[john_100]

that would be me ! in my reply to:-

Current Set Resistor?


as I read the info from Gecko the maximum current out is 3.5A
but without the resistor ,the current isn't reduced with the drive idle

from the manual:-

"your motor is rated at 3.5A or above you can safely not use a current set resistor; however, your
G540 will not go into current standby mode which will result in increased motor heating."

John

[bel630]

that would be me ! in my reply to:-

Current Set Resistor?


as I read the info from Gecko the maximum current out is 3.5A
but without the resistor ,the current isn't reduced with the drive idle

from the manual:-

"your motor is rated at 3.5A or above you can safely not use a current set resistor; however, your
G540 will not go into current standby mode which will result in increased motor heating."

John

thanks for your info.. unfortunately 3.48K 1% resistor like hard to find.. can i use below 3.48k?

[john_100]

yes

if you use 3.3k resistors you will have an output of 3.3 A
which is about 95% of the 3.5A maximum

if you need an output closer to 3.5A
either use a 3.3K resistor and a 180 ohm in series

or if you have a number of 3.3K 5% resistors you could select
resistors at the upper limit 3.300K x 1.05 = 3.465K

John

[bel630]

yes

if you use 3.3k resistors you will have an output of 3.3 A
which is about 95% of the 3.5A maximum

if you need an output closer to 3.5A
either use a 3.3K resistor and a 180 ohm in series

or if you have a number of 3.3K 5% resistors you could select
resistors at the upper limit 3.300K x 1.05 = 3.465K

John

thanks.. i got an idea now...

[PEU]

Best solution I found to the 3K5 resistor is purchasing 3K9 and 33K resistors and putting them in parallel, it gives you 3.48K pretty close using cheap and readily available regular resistors.


Pablo