Remove Safety Card - STO Bridge

Dear community,

Some problems with a safety card is stopping a machine with S700 drives from working. 

We want to remove the safety card but we can not since we don't have the required "STO bridge" to detect the STO inputs. Therefore, -S- is displayed in the drive.

Any idea of how to get some of these parts or how to do a customized one? I have contacted many distributors and Kollmorgen itself but no stock.

Please, it is really urgent.

Thanks in advance, Sergio.