![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhojO4MbHQ4gxVA00cgn-yZVGuppiOErh6VMKEx0YXy01NJ1D2kTGAe6eFpOIm7GgnyeaLEC3ZYWsCF50kVMaF9AsChKwotS7esLrzNPZNbENtSr7ivJBIKrFgkYtmYai-R-CapTrQlYnsHFUXCwUwplZlz_gWQ3b3duNQJ4dbi2Cw9F9rzRxtiyzWD/w400-h104/Header.jpg)
Thursday, February 2, 2023
ML-ACR and DC-to-DC Charger Transfer Relay with Time Delay Start
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhojO4MbHQ4gxVA00cgn-yZVGuppiOErh6VMKEx0YXy01NJ1D2kTGAe6eFpOIm7GgnyeaLEC3ZYWsCF50kVMaF9AsChKwotS7esLrzNPZNbENtSr7ivJBIKrFgkYtmYai-R-CapTrQlYnsHFUXCwUwplZlz_gWQ3b3duNQJ4dbi2Cw9F9rzRxtiyzWD/w400-h104/Header.jpg)
The changeover/transfer relay only activates one charger at a time, either the ACR or the DC-DC, turning them on at the same time could cause some issues down the road. I also added a time delay relay for the DC-to-DC charger D+ trigger so that it does not immediately turn on as soon as the engine is started. I added a 3-minute delay (user selectable) to allow the chassis voltage to stabilize before starting the DC-to-DC charger. Here's how I did it.
Subscribe to:
Posts (Atom)