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Author Topic: Z moves down after Ref All home and hits base  (Read 2168 times)

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Z moves down after Ref All home and hits base
« on: January 13, 2020, 06:28:26 PM »
Dear group, please help !

I have an X3 Sieg (Promica set up), and have safety switches on x, y and z.  When I Ref All Home, the Z just moves down and dosent stop .  This is a new thing, as it used to move up until the safety switch trigger - then x and y would move.

I have no idea what has happened and appreciate  any help !! :-[ :-[

Thankyou
Anthony

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Re: Z moves down after Ref All home and hits base
« Reply #1 on: January 14, 2020, 04:28:10 AM »
does z-axis move up and and down if you drive it in Manual mode?
anything is possible, just try to do it.
if you find some mistakes, in my bad bavarian english,they are yours.
Re: Z moves down after Ref All home and hits base
« Reply #2 on: January 14, 2020, 04:52:46 AM »
Thankyou for your reply TPS - yes I can manually control the z with the ] and ' keys

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Re: Z moves down after Ref All home and hits base
« Reply #3 on: January 14, 2020, 04:56:26 AM »
then Config -> Homing/Limits -> Home Neg. seams to be wrong
anything is possible, just try to do it.
if you find some mistakes, in my bad bavarian english,they are yours.
Re: Z moves down after Ref All home and hits base
« Reply #4 on: January 14, 2020, 03:14:38 PM »
Thanks TPS, can I ask what I should be looking for?

Thankyou
Anthony

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Re: Z moves down after Ref All home and hits base
« Reply #5 on: January 15, 2020, 02:12:29 AM »
if you go to Config -> Homing/Limits there is a collumn Home Neg. where you can select the dirction of homing.

from the Manual:

5.6.1.1 Referencing speeds and direction
The Config>Home/Softlimits dialog allows you to define what happens when a reference
operation (G28.1 or a screen button) is performed.
Figure 5.16 Shows the dialog. The Speed% is used to avoid crashing into the stop of an axis
at full speed when looking for the reference switch.
When you are referencing, Mach3 has no idea of the position of an axis.
The direction it moves in depends on the Home Neg check boxes. If the relevant box is checked then the
axis will move in the minus direction until the Home input becomes active. If the Home
input is already active then it will move in the plus direction. Similarly if the box is
unchecked then the axis moves in the plus direction until the input is active and the minus
direction if it is already active.
anything is possible, just try to do it.
if you find some mistakes, in my bad bavarian english,they are yours.
Re: Z moves down after Ref All home and hits base
« Reply #6 on: January 18, 2020, 05:03:26 PM »
Thanks TPS, I have tried but its a little confusing.  I have atatched some images of my screens - - maybe my limit switches are not working??

I hope you can help  :-[ :-[

Thankyou
Anthony

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Re: Z moves down after Ref All home and hits base
« Reply #7 on: January 19, 2020, 03:41:31 AM »
so lets do some tests

if you Trigger the z-axis home Switch can you see it changing in diagnostic Screen?
in Manual mode if you press page up button z-axis goes upwards and z-axis dro is going to plus?
if you are in diagnostic Screen, what is Happening if you press the Ref Z button?
anything is possible, just try to do it.
if you find some mistakes, in my bad bavarian english,they are yours.
Re: Z moves down after Ref All home and hits base
« Reply #8 on: January 19, 2020, 06:18:21 PM »
Thanks TPS.  !!!

Ok, so if I move my Z all the way up, there is no change in the diagnostic screen
Yes, as the Z moves up, the numbers increase positive
In diagnostic screen, if I press z (picture yellow circle) it moves down

Thanks TPS
AZ

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Re: Z moves down after Ref All home and hits base
« Reply #9 on: January 20, 2020, 02:04:24 AM »

Ok, so if I move my Z all the way up, there is no change in the diagnostic screen

so check your Limit Switch für z-axis

Yes, as the Z moves up, the numbers increase positive

thant is ok

In diagnostic screen, if I press z (picture yellow circle) it moves down

then Change Config -> Homing/Limits -> z-axis -> Home Neg.
anything is possible, just try to do it.
if you find some mistakes, in my bad bavarian english,they are yours.