Schneider ZBE 101 is not working

[LordKelvin]

Great explanation thanks darkwood!

 

[LordKelvin]

Wow! I was able to make what you said

So this is the response:

link=my (fake) connection, real=the connection from the electrical diagram
YES=it switches NO=it does not

scenario 1 - YES
S11-S12 link
S21-S22 link
S11-S52 link
S12-S34 link

scenario 2 - NO
S11-S12 real
S21-S22 link
S11-S52 link
S12-S34 link

scenario 3 - YES
S11-S12 link
S21-S22 real
S11-S52 link
S12-S34 link

scenario 4 - YES
S11-S12 link
S21-S22 link
S11-S52 real
S12-S34 link

scenario 5 - YES (after pushing the real reset button)
S11-S12 link
S21-S22 link
S11-S52 link
S12-S34 real

I studied (well, as much as I could with my knowledge) the manual and the relay and now I believe I have got this:

The issue is in the S11 - S12 branch of the circuit.

The only thing is...what could be the problem? As I already checked there is continuity everywhere (between every two points) except before and after the 3 interlocks group...but of course they are not energised during the test (I read that I need to check continuity with the device with the power off). Also when I power on the panel, I can see the green led ON in the 3 MECHAN interlocks, that means there is a magnetic connection...

I hope I am doing well until now I am on a self-learning and also through yours (much appreciated) so be patient please with my lack of knowledge if I say something that looks "stupid"

 

[Darkwood]

Just remember just because the green light is on and the mechanical lock engaged it may be the case the integral limit switch is faulty or even a loose/broken wire, never assume always check.

Bypass a suspicious device to see if it cures the problem.

The hardest issue is having multiple faults although not as common they can be confusing at the very least.

Now you have identified the loop that is open circuit you can work your way through it... happy fault finding

 

[Bobster]

Oh be aware on a duel channel system, if both channels don't break simultaneously the pilz unit will see this as a fault and will not let you reset without cycling the power to it,

 

[LordKelvin]

So we could definitively say that the fault is in one (or more) of the interlocks?
And exactly in the wire that connect s11 with s12 right?
Thanks

 

[Bobster]

It looks that way.

 

[LordKelvin]

It looks that way.

Now it might be a good idea to study how the MECHAN safety interlock works in as much detail as I can and by pass each of them and try to sort out.

really thanks guys!

I will come back here if I will have any news

 

[Darkwood]

When you get the hang of it, this particular job wouldn't take more than half hour to diagnose the problem so we just need to speed you up a bit - 3 days and counting ... just kidding we all learn somewhere :cool3:

 

[LordKelvin]

When you get the hang of it, this particular job wouldn't take more than half hour to diagnose the problem so we just need to speed you up a bit - 3 days and counting ... just kidding we all learn somewhere :cool3:

Well now I will recover on Tuesday..stop the clock please! Ahah

I wish a good long we to everyone

 

[LordKelvin]

Problem in a wire of the first interlock. Sorted Out! Thanks a lot guys