home swicth and limit

[madi]

hi, did someone know why my axis not stop when they hit the switch on jog mode? ive just finish install the switch, when homing is ok, the problem is jog.

 

[testyourdesign]

@madi You might have forgotten to set the soft limits in axis calibration. Take a look at Travel Minimum and Travel Maximum.

 

[madi]

thanks bro,, that mean the switch cannot overwrite the soft limit? I thought the switch will protect the axis from over travel if something happen,,before I put the switch , I just relay on soft limit as the picture u upload, until ive got update the system,, it seem don't read the limit that I have set, that y I decide to put the switch,, that coast me one unit the controller when I accidently make wrong connection..

 

[testyourdesign]

Basically once you establish the Home position Masso will use the minimum travel and maximum travel setting for its travel limits. I don't think it can use limit switches since I don't see a configurable input for limit switches in the inputs list.

List of Configurable Inputs

www.masso.com.au

 

[tayloredtech]

It could be an option (until limit sensor inputs are implemented) to wire some limit switches in series and into the E-stop input just to save the machine hammering into the end of the rails etc.

 

[testyourdesign]

Thanks for the reminder @tayloredtech. I completely forgot about that option. The E-Stop connection to your limit switches sounds like a perfect solution for you @madi.

 

[masso-support]

@madi you can wire two switches on both sides of the axis, if used in Normally Open then in parallel, if used in Normally Closed then in series. Then connect it to the homing input of the axis, goto general settings in F1-Setup screen and make sure hard limits are not disabled. Now once the machine is homed if either of the switch is hit then the system will stop motion and go into hard limit alarm.

 

[testyourdesign]

Thanks for clarifying the details for the hard limit function @masso-support. I was wondering how you make the hard limit function work. I will need to test this design!

 

[tayloredtech]

Quote from MASSO - Support on August 30, 2018, 1:12 am

@madi you can wire two switches on both sides of the axis, if used in Normally Open then in parallel, if used in Normally Closed then in series. Then connect it to the homing input of the axis, goto general settings in F1-Setup screen and make sure hard limits are not disabled. Now once the machine is homed if either of the switch is hit then the system will stop motion and go into hard limit alarm.

Would that stop the machine from going past the limits in jog mode? @madi said it is fine homing but not when jogging the machine?

 

[masso-support]

yes hard limits will also work in jog

 

[testyourdesign]

I suppose central limit switch with two mechanical triggers at the ends of travel will work as well.

 

[madi]

thanks for the info guys,,i will try to do that.. on the f1 screen , if i using normaly close swicth,, which one do i need to set the signal, low or high? sorry guys for the bunch of question,, i am a new in this thanks

 

[masso-support]

no worries @madi and @testyourdesign the "central limit switch with two mechanical triggers" is a great idea!!

 

[madi]

hi @masso, if i using the nc switch, do i need to invert the signal?

 

[masso-support]

basically just check that the signal only shows HIGH in F1-Setup screen when the switch is pressed