Element E5 limit switches not working, faulty DSP?
Posted: Thu Nov 03, 2016 5:01 pm
Hi all,
I completed my K40 conversion with the Element E5 DSP controller.
I wired the DSP according the schematics on this site. For me (an engineer) not a big problem, only time consuming.
It looks like that the DSP is not 'sensing' the limit switches. The laser head carriage is bumping to the switches and after 5 seconds of very hard bumping it stops. This is not normal to me. I wired the switches according the schematic (using 2 shielded wires). the X and Y switches are (Normal Open) connected to the GND and X and Y limit switch pins on the DSP. Measuring with a multi-meter shows that the switches are functioning fine.
Also I ruled out interference problems with the stepper motor wires.
If I measure the pins of the limit switches on the DSP controller (without switches connected) I get approx. 100mv between GND and the X and Y limit switch pins. on the DSP. When measuring the both Z (- and +) with GND I get 24v and 5v. Is this normal, or is my newly bought DSP defective?
Dennis
I completed my K40 conversion with the Element E5 DSP controller.
I wired the DSP according the schematics on this site. For me (an engineer) not a big problem, only time consuming.
It looks like that the DSP is not 'sensing' the limit switches. The laser head carriage is bumping to the switches and after 5 seconds of very hard bumping it stops. This is not normal to me. I wired the switches according the schematic (using 2 shielded wires). the X and Y switches are (Normal Open) connected to the GND and X and Y limit switch pins on the DSP. Measuring with a multi-meter shows that the switches are functioning fine.
Also I ruled out interference problems with the stepper motor wires.
If I measure the pins of the limit switches on the DSP controller (without switches connected) I get approx. 100mv between GND and the X and Y limit switch pins. on the DSP. When measuring the both Z (- and +) with GND I get 24v and 5v. Is this normal, or is my newly bought DSP defective?
Dennis