EC Variable speed fan connections

EC variable speed fans connections and explanation. At first the connection of EC variable speed fans can seem complex. This brief video covers the connections and their applications across a few brands such as Ziehl, EBM, Rosenberg.

[@leslieaugust6110]

Thanks Andrew for the informative video. Leslie

[@JustAnotherAlexander]

Very well explained

[@kamalolo8490]

thenks bro i have ebm papst fans wiring like that working control by o 10 v i need your help to show me control and how checking manuely pls this may whatsupp pls oir i need your whatsupp nember sir

[@andrewjapp4502]

If you can detail the "fan model number in full" I can likely help. EBM have (2) different wiring versions I'm aware of and the digital input can also be NC or NO depending on the model. Frequently the fan will be supplied with matching operator manual which has a table listing these variables but its still not always 100% obvious.