------Question for F1238X24B2-FHR-TTL Please Put your question below------
‘F1238X24B2 / FHR-WS-INV / BALL’ & ‘F1238X24B2 / FHR-TTL / BALL’ is interchangeable? We concerned there could be signal issue when we replace it to ‘TTL’ type from ‘WS-INV’ type.
Could you please give me a link for buying the exact Fan Part? (‘F1238X24B2 / FHR-WS-INV / BALL’)
If there is no way to buy, How do we order this parts?
Hello jae-young.kwon,
Welcome to the DigiKey TechForum.
The F1238X24B2-FHR-TTL is available to order but we don’t stock it so there is a minimum buy and a lead time. I could not verify the full part number of the WS-INV version of it. There is the WS version instead of the TTL yes, F1238X24B2-FHR-WS according to the part numbering system on the data sheet: mechatronics_catalog.pdf but it is not something we offer currently.
Seems the only difference between the two would be the signal of the 3rd wire yes.
Hello @Irfan_Koric,
Thank you for your reply!
Do you know it is possible to replace ‘F1238X24B2 / FHR-TTL / BALL’ to ‘F1238X24B2 / FHR-WS-INV / BALL’?.
As you mentioned, it seems only difference is 3rd wire signal and other Hardware spec is same. However, we need to replace it because ‘WS-INV’ Fan was burned.
‘TTL type’ and ‘WS-INV type’ function will be different but if ‘TTL type’ fan is working well instead of ‘WS-INV’ type, that is what we found!
I already contact to Mechatronics fan group but there is no reply… so I am wondering contact point is wrong or not. please tell me how I could contact this team.
I contact below mail groups.
@jae-young.kwon 디지키의 테크포럼에 오신것을 환영합니다.
Irfan이 첨부한 내용으로 TTL과 WS의 차이는 확인하실 수 있을 것입니다. 외부 회로가 TTL 신호를 수용할 수 있다면 TTL 버전도 사용이 가능할 것이라고 판단됩니다.
그러나 문제는 INV 옵션으로, 아마도 inverted locked rotor 옵션일 것으로 판단됩니다. 이 경우 해당 신호는 반전되기 때문에 그에 맞게 하드웨어 또는 소프트웨어의 수정이 필요할 것입니다.
오픈 콜렉터 / TTL, 그리고 반전 신호에 대해서는 아래 링크를 참고해 보시기 바랍니다.
F1238X24B2-FHR-TTL로 타당성 실험을 거친 후 적용 여부를 판단해 보시는 것을 권장드립니다.
감사합니다.
