Inductive Sensor : Please check my wiring diagram

Machine: _ K40, 100watt with a 100watt LPSU, and a 24V + 5V DC power supply, came with a M2 Nano board

Board: _ Nanao2 replaced with a Cohesion3D board, digital display being replaced with a display board for Cohesion3D_

Firmware: I’m using whatever it came with

Problem/ Question: _How to wire the inductive (proximity?) sensors to the C3D board.

Yes I know that the topic has been dealt with before, but honestly reading those left me even more confused!

I would greatly appreciate any help

  • Below are pictures of the sensors.
  • The 24V / 5V power supply
  • The C3D board wired up
  • And lastly - A picture of how I think it should be connected.

Many thanks in advance.

Hi Richard.

The brown wire should go to 24v on the LaserBoard, not on the Laser Power Supply. That was the main conclusion from all the other topics where a machine with an M2Nano came with inductive sensors. Use the screw terminal at the top left corner of the board for a 24v source.

Nicely made diagram.

Thanks for your time indeed. Please excuse the overabundance of caution but we are talking about the ringed area in the following pic?

No, the other top left corner :slight_smile: (look up)

Should say alternate power in something.

ummm… this other left? :grinning:

That’s the one!

Oh! Awesome, thanks so much for your time!

So… Just to be 100% sure…

That looks good.

More help here please because oh… and just when I thought the issues were over…

For some strange reason the X-Min isn’t registering the sensor. Y-Max sensor is fine.
If I connect the X-Min sensor to the Y-Max points on the C3D board it immediately registers (M119) as Y_max:1 so the sensor is not at fault I think. I have spare inductive sensors and they also work fine (although in reverse) on the Y_max and on the Z_min but on the X_min they too misbehave.
I have no installed Z sensors.

With the inductive sensors not plugged into the C3D board :
M119
X_min:0 Y_max:1 Z_min:1 pins- (X)P1.24:0 (X)P1.25:1 (Y)P1.26:1 (Y)P1.27:1 (Z)P1.28:1 (Z)P1.29:1

Y sensors only plugged into the C3D board, contacts not touching endstop
M119
X_min: 0 Y_max: 0 Z_min:1 pins- (X)P1.24:0 (X)P1.25:1 (Y)P1.26:1 (Y)P1.27:0 (Z)P1.28:1 (Z)P1.29:1

X sensors only plugged into the C3D board, contacts not touching endstop
M119
X_min: 0 Y_max: 1 Z_min:1 pins- (X)P1.24:0 (X)P1.25:1 (Y)P1.26:1 (Y)P1.27:1 (Z)P1.28:1 (Z)P1.29:1

X & Y sensors plugged into the C3D board, contacts not touching endstop
M119
X_min: 0 Y_max: 0 Z_min:1 pins- (X)P1.24:0 (X)P1.25:1 (Y)P1.26:1 (Y)P1.27:0 (Z)P1.28:1 (Z)P1.29:1

X & Y sensors plugged in, Y_Max only - contact touching endstop
M119
X_min:0 Y_max: 1 Z_min:1 pins- (X)P1.24:0 (X)P1.25:1 (Y)P1.26:1 (Y)P1.27:1 (Z)P1.28:1 (Z)P1.29:1

X & Y sensors plugged in, X_Min only - contact touching endstop (However the sensor’s light doesn’t go out)
M119
X_min:0 Y_max:0 Z_min:1 pins- (X)P1.24:0 (X)P1.25:1 (Y)P1.26:1 (Y)P1.27:0 (Z)P1.28:1 (Z)P1.29:1

X & Y sensors plugged in, X_Min & Y Max’s - contacts touching both endstops
M119
X_min: 0 Y_max: 1 Z_min:1 pins- (X)P1.24:0 (X)P1.25:1 (Y)P1.26:1 (Y)P1.27:1 (Z)P1.28:1 (Z)P1.29:1

If I plug the Y sensor onto the X sensor’s position on the C3D’board, then it too does not go out when I put the metal file infront of it.

Y_max on

Y_max off

X_min on

X_min unresponsive

The induction sensor when plugged into a different place on the C3D board, this time it’s on the X_Max

20200807_1126181

The Lights are :
VMOT is solid red
3vs3 is solid green
L4 is solid green
L3 is blinking green
L2 is blinking green
L1 is solid green

Is it possible to just cut the Gordian knot and somehow tell the board to treat Y-Min as though it were X-Min?

We can have a look at your config file here to make sure nothing is off.

For a simple workaround, I’d plug it into X MAX and then just flip the X MIN and X MAX pin designations with each other in the config file.

1.24 becomes 1.25 and 1.25 becomes 1.24.

Fabulous!
This is what it was :

image

Changed to :

image

I haven’t tried it yet, do I also need to set this NC setting?

image

No, just do what I said and then run M119 tests again.

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