Hi recently aquired a ruida controller 6445s
And it seems im not getting enough power
Using lightburn.
Using a 40w tube from a k40
I tried to cut at 100%power and im not getting even 5ma…
Anybody to help?
Thanks edgar
Do you have the stock K40 lps (laser power supply)?
How is the Ruida laser control signals to the lps wired?
Specifically the L-On1 and either LPWM1 or L-AN1 to the lps?
A photo of your lps making sure the markings are visible would be nice…
If you remove the signal connector from the lps, and press the test button it will fire 100% power… Does it?
The signal is the connector on the right.
If it’s the same pinout or connections you can pass on the link.
Do you have and can drive a voltmeter?
:smile_cat
Its not the stock one i purchased a similar one that saus 50w ,they are identical.
Not sure what you mean by the control.signals🤔
A link to it would mean something… I’ll assume a regular lps.
How to you have the signals wired?
With the connector off i get a peak of 12 13ma and them stables at 10ma
I have multimeter
The lps looks like a standard K40 type…
This appears to be the pinout of that lps. Ignore the red jumpers, not used here.
Can you tell me what Ruida pins connect L (P2-4) and IN (P2-2)?
I have
P1-1 to Lon1. On ruida
P2-2 to LPWM1on ruida
p1-3 to GND on ruida
Im thinking that i had more power before i took the power pot out of the system.
I was getting around 15ma
Does the pot that comes with the k40 overrides by some amount the Trim pot that is inside the lpsu?
Sounds like you have it wired correctly.
Does the test button work at full power when you press it?
This should not be connected… Do you have the pot in circuit?
The pot is a simple voltage divider to apply a manually set voltage to the IN terminal of the lps, this limits the current supplied by the lps to the tube.
Basically, this sets the lase current. You do not have any software power control with this, just power over time.
You didn’t mention if you have a voltmeter you can use.
You can measure what the pwm is at the controllers output if you have a meter… This will separate the problem between the lps and the controller.
Make sense?
Is it really ok ?because i have the GND and the L on the right most connector .)looking to your lpsu pic)
I dont have nothing connected to the L on the middle connector(p2-4)
I just took 1 wire that i needed the other 2 stayed connected
And i have a multimeter here
Thats my convern ,because i think i was getting more power before.
I have max 10ma now and before i could go to 15ma
First confirm that signal voltages from the Ruida are correct.
What are the voltages from Ruida LPWM1 pins for 0%, 50%, and 100% power?
That will tell you if the issue is at controller or downstream.
Also, are you saying that the only change between when you had higher current and now is the board swap and the removal of the user controllable pot?
Thanks ,but not really sure where to connect the multimeter probes…
Yeah the only change was the controller and the external pot
On the controller, probe between LPWM1 and GND pin. You could do this on the LPS side with the wires going from controller to LPS if that’s easier.
What does this mean?
If you removed the wire (wiper) to the IN pin, that’s correct. You should be able to remove the pot, no need for it with a Ruida…
I assume you upgraded the K40 24V supply?
I didn’t think the K40 had a 24V supply that could supply enough current for both motor drivers and the this type of controller… I believe it’s only rated at 1A, enough to drive the control board.
Follow @berainlb on checking pwm. The signal is ttl or 0 to 5V, at 50% pwm the output should be 2.5V or 50% of 5V…
Make sense?
Good luck
Ii cut the wiper wire and connected to ruida , the others stay connected to power supply
I will check the pwm.
Can you please comfirm wiring ?arrows shows where i had the cables connected
So i disconnected all the wires that i dont need from the lpsu(the pot ones)
And now i have full power.
My question is in the controller i have power options.
Is this to set the maximum power that the laser can work?
How does this power on the controller relates to the power set in lightburn?
You can set min/max pwm limits, same as all the axes speeds…
Did you upgrade the 24V supply?