question about G2R2 relay

Question

I am trying to design a small board (my first) that incorporates three G2R2 relays. I found the component in the "add" section but it appears that the schematic and the board drawings are different, specifically the N.O. and N.C. contacts. The actual part has the N.C. contact as the one closest to the coil (as shown in the board image). I am miss-reading the two images or is it as simple as rotating the N.O-Com-N.C. connection in the schematic? Or is there something else? It seems odd that the two images wouldn't have the components lined up. I attached a screenshot of the G2R2 part images. Thanks.

autodeskguest · Accepted Answer

On 24/09/14 01:00, AJ Weiner wrote: I am trying to design a small board (my first) that incorporates three G2R2 relays. I found the component in the "add" section but it appears that the schematic and the board drawings are different, specifically the N.O. and N.C. contacts. The actual part has the N.C. contact as the one closest to the coil (as shown in the board image). I am miss-reading the two images or is it as simple as rotating the N.O-Com-N.C. connection in the schematic? I attached a screenshot of the G2R2 part images. Thanks. There is no reason to think anything is wrong based on this screenshot. Never assume that the schematic symbol has any geometric similarity to the physical part. THIS IS NOT WHAT SCHEMATICS ARE FOR! How many transistors do you know that physically look like their schematic symbol? How many NAND gates in D-shaped packages? Schematics represent function, not layout. That is precisely why the contact part(s) of a relay are separate from the coil - you may want to represent the function in different parts of the sheet (or even on different sheets). If it bugs you, you can rotate the contact parts. You can even make a net connection between the NC pins and confirm that the board has the airwire between the pins you expect. HTH Rob