I just read through the topic
Spindle Enable/Direction pins not active?
I didn’t see a resolution. Has there been a determination as to whether or not these pins will give out the correct signals? Tech support seems to think that they work but they don’t. At least not on my controller. I just received mine at the end of July.
Hey Rich,
Welcome to the club. That topic brings back memories of disecting the slbs pwm section. I am still recovering.
Are you having same machine as dv? Did you replace r9 r10 ic3 and all that? There’s a lot happening within that topic. Could you maybe zoom in on what problem you have on what machine and if you indeed are having contact with sienci aboit it.
The solution to dvs problem is presented in the first post and refers to this post.
Hi @rexx42 , the spindle enable and spindle direction signals are active low (current sink), not active high (current source). If you can give us some details on your VFD I may be able to help you get your spindle going.
dv
I have not removed any components from my board. There seems to be some conflicting info going around. Kelly Zhu from Scienci says that the Enable signal is a 5v digital signal that goes high when spindle is turned on. I have a Lenze SMVector 3hp Single Phase 240 input VFD. It does not have Modbus and it relies on a 0-10v analog signal for speed control. I have a 5v PWM to 10V converter. I just need an enable signal to send to the VFD to start it.
Note the word ‘digital’ …. either on or off. From your post it seems like you are thinking of using that signal for speed control and that will not work.
If on the other hand I read this wrong and you only want on/off and speed is controlled by something else then you are good to go.
Note to the words “I have a 5v PWM to 10V converter. I just need an enable signal to send to the VFD to start it.”. I am not getting any signal change on the enable line when the spindle is activated from the software.
You probably have issues with compatibility between the output and the circuit you are trying to hook up. I would look at the schematic to see what is happening. As an example, you might have a 5V output but the ground line is switched. There are a number of ways how the output signal could be supplied.
No. I am having trouble with no signal being present at all. I have used a multimeter and an o-scope and seen no signal. I am not even to the point of hooking it up to anything.