Short circuit possibility

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#1 Short circuit possibility

Dear SkyCAD Electrical Team

I found a possibility of a short circuit during relay contacts connections.

Both NO & NC contatcs has a same common connection point, and accepting diffirent wires (which will lead to short circuit).

Am I doing anything wrong.?

Please look at the image.

Thank you,

Abhishek K

SkyCAD doesn't monitor the possibility of short-circuits

Thanks for posting on the forum.

SkyCAD doesn't monitor the possibility of short-circuits at all. (At least, not yet). So, it's up to the users to ensure that there are no short-circuits in the design.

Does that help?

Disappointing

Dear Jeff Walsh

Ok, at least when adding relay contact points if, 1st contact block is already used, then next contact should be not from the same block.

If user wants to use contact from the same block, let him choose it manually.

I think this change in SkyCAD will reduce the chances of short circuits in said scenario.

Thank you,
Abhishek K

We hope this helps

Sorry you are disappointed. Monitoring short-circuits is a complex and resource-intensive process, but we hope to make this possible some day.

Ok, at least when adding relay contact points if, 1st contact block is already used, then next contact should be not from the same block.
This should already work this way by default, provided your relay catalogue part has more connection port groups (contacts), like this:

If your relay catalogue part only has another connection port group that carries the same pin number as the other (like in a change-over contact) then you will get the results you got:

Please let us know if this helps.

Clarification

 Dear Jeff Walsh

What I mean to say is, if 11-14 NO point is used, then next NC  point should be 21-22, not 11-12.

If at all user wants to have 11-12 let him asign manually.

Thank you,
Abhishek K

It should already work this way

Dear Abhishek K,

What I mean to say is, if 11-14 NO point is used, then next NC  point should be 21-22, not 11-12.
This is exactly how it is supposed to work, as long as 21-22 are defined as an NC and are not already being used. This is what we were trying to explain in our previous reply.

Do you get this behaviour?

Not working

Dear Jeff Walsh

Not working as you told. Both NO & NC are assigning to same block.

Note: I am using 4 NO/NC type relay.

Thank you,

Abhishek K

Please upload a package of your catalogue part

Dear Abhishek K,

Please upload a package of your relay so we can take a look:

  1. Double-click on your relay on the schematics (the part number in question must be assigned)
  2. Go to the Export tab and select Package Relay for deployment

A package file will be created. Please upload that package here so we can take a look.

Attachment

Attached the Package file.

Have you saved your MY4N DC24 part number to catalogue?

That is the package for the relay coil symbol only, not the MY4N DC24 part number that is saved to your catalogue, which is what we need.

Have you saved your MY4N DC24 part number to catalogue?

You can verify this and make a package of the part at the same time:

  1. Go to the Catalogue Tools tab and select Open Catalogue Part
  2. Select Relay and click OK
  3. Choose MY4N DC24 and click OK. (If you don't find MY4N DC24 there, then that's the problem, and you need to save it to catalogue)
  4. Select MY4N DC24 in the tree view
  5. Go to the Export tab and select Package Relay for deployment
Attachment

Dear Jeff Walsh

I have followed the procuder as you told.

Thank you,

Abhishek K

Thank you!

Looking at your relay connection port groups, we have a better understanding of your question.

Ok, at least when adding relay contact points if, 1st contact block is already used, then next contact should be not from the same block.
This is how it works. For example, if you add a relay coil to a sheet and assign it this part number, the pins will be 13 - 14. Then, if you add a NO contact to the sheet and link it to the coil, the NO contact will be assigned to the first available connection port group on the relay; i.e. 1 - 5.
The next NO contact linked to the relay will be 2 - 6, and so on.
The first NC contact linked to the relay will be 1 - 9, then 2 - 10, and so on.

If at all user wants to have 11-12 let him asign manually.
This is possible. If you insert a NO or NC contact and want it to be assigned to a specific connection port group (e.g. 11-12) on the relay, there are two ways to do this:

  1. When inserting the contact onto the sheet, hold the SHIFT key.
    A dialog box will be displayed, listing all the components in the project.
    Select the component you want (the relay), go to the Show tab and select Connection Port Groups.
    Select the connection port group you want the contact to be assigned to (11-12) and click OK.
  2. If the contact has already been inserted onto the sheet, hold the SHIFT key when selecting Link With.
    A dialog box will be displayed, listing all the components in the project.
    Select the component you want (the relay), go to the Show tab and select Connection Port Groups.
    Select the connection port group you want the contact to be assigned to (11-12) and click OK.

Please let us know if this helps.

But

Dear Jeff Walsh

This is how it works. For example, if you add a relay coil to a sheet and assign it this part number, the pins will be 13 - 14. Then, if you add a NO contact to the sheet and link it to the coil, the NO contact will be assigned to the first available connection port group on the relay; i.e. 1 - 5.
The next NO contact linked to the relay will be 2 - 6, and so on.
The first NC contact linked to the relay will be 1 - 9, then 2 - 10, and so on.
 This is what should not happen.

Then next NC contatc should be 2-10.

If you look into AutoCAD Electrical, it is working prefectly the way I am explaining.

Thank you,

Abhishek K

Ah, we understand

Dear Abhishek K,

Then next NC contatc should be 2-10.
Ah, OK. We better understand what you were expecting. This is not how SkyCAD handles it. If you wish to achieve this result, you should let SkyCAD know that you want to use that contact, as we explained in the last paragraph of our previous comment.

Please let us know if that helps.

It is working

Dear Jeff Walsh

It is working.

But once we delete the assigned contact, again it is not appearing in Connection Port Groups to reassign.

Please have a look.

Thank you,

Abhishek K

Hmmm...

Dear Abhishek K,

It seems to work when we test it, but perhaps we're doing it slightly differently to you.

Please share a screenshot.

Thank you.