MASSO input for PNP limit switch

[supman]

The machine I have has 3 Balluff PNP inductive sensors. They are all hooked up together (X,Y,Z Axis) in the gantry as one. meaning there is only one cable going back to the controller. My question is will the Masso have an issue if all the 3 inputs light as one or will it be ok as the masso only does one axis at a time when doing a homing routine. I hope this makes sense.

I have attached link for the sensors

Products - Balluff

www.balluff.com

Phill

 

[stevefrisby]

This intrigues me How are they connected together? can you draw the wiring as I really don't understand why 3 sensors output would be connected to one cable. Is there an option to replace the cable as this is a very unusual configuration.

I suspect for a start just to get the machine running you would have to turn off the hard limits as when one axis is homing and triggering its home sensor it will trigger the other two and create an hard limit alarm on the other two axis

Are the sensors in different locations normally they are located at opposite ends of travel as you will have to set homing settings accordingly peters tutorial shows this as he had one sensor (I think Y) at the opposite (conventional) end so he was homing to max y and not zero and changed the settings accordingly so once homed the machine would return to conventional 0

Is the machine a router or mill

 

[supman]

 

[supman]

so about the image

rotation but anyway a picture=1000 words right. there are 3 connectors with green/red/yellow wire's. two off these are go to the Z and X axis inductive sensor. the top wire has MAIN written on it. this wire goes back to the main controller. The blue/Brown/Black connector goes to the Y Axis sensor mounted in the gantry. I was curious has how this worked to. Logically it must send a signal to all inputs at once whenever a limit condition has been met on any of the axis. problem is that it used to work fine before. weird I know the easy thing to do is route new cable for each axis but my curiosity wants to know.

when you do a homing routine the machine only does one axis at a time as Peter's video points out. Maybe the controller is only concerned about the active axis I don't know maybe some one else can shed some light.

If the hard limits are active all the time then you are correct in saying it will trigger hard limit error.

yes Z axis sensor is behind air connectors. Y axis sensor is the one you can see in open gantry end. X axis is mounted below axis motion stepper.

as I am retro fitting with new controller I have had to reverse engineer everything.

the machine is a router 2400mm X axis *1800mm Y Axis

 

[breezy]

@supman,

MASSO requires between 3-5 separate inputs for its homing function, because it can home multiple axes at once. ie Y & B for squaring gantry, X & Y so both axes are moving to the home position at the same time. Even the Z axis could be homed at the same time the X & Y are being homed, but is not advised.

Peter shows in his video doing one axis at a time for clarity.

The previous controller obviously only used 1 input to home/hard limit and each axis was homed independent of each other.

You will need to run a new cable from that point in the gantry to MASSO, it can be as low as 5 wires to as high as 9 wires. So 6 wire shielded cable is what you require, 2 for power, 3 for signal and one spare.

Regards,

Arie.