Serial brushed motor and rpm running wild.

Electric Motors and Controllers
Post Reply
Pota
1 W
1 W
Posts: 62
Joined: May 15, 2017 8:27 am

Serial brushed motor and rpm running wild.

Post by Pota » Dec 02, 2017 11:59 am

Hello.

Ive heard that serial brushed motors will spin to death if not applied resistance.
And if the chain breaks they will destroy themselves kmin seconds.

Ive heard i can attatch some sort of overspeed protection
What is that and where can i buy those?

User avatar
Chalo
100 GW
100 GW
Posts: 6121
Joined: Apr 29, 2009 11:29 pm
Location: Austin, Texas

Re: Serial brushed motor and rpm running wild.

Post by Chalo » Dec 02, 2017 3:52 pm

Why not a permanent magnet motor?
This is to express my gratitude to Justin of Grin Technologies for his extraordinary measures to save this forum for the benefit of all.

Pota
1 W
1 W
Posts: 62
Joined: May 15, 2017 8:27 am

Re: Serial brushed motor and rpm running wild.

Post by Pota » Dec 02, 2017 4:09 pm

Because i have Forklift motor

User avatar
Chalo
100 GW
100 GW
Posts: 6121
Joined: Apr 29, 2009 11:29 pm
Location: Austin, Texas

Re: Serial brushed motor and rpm running wild.

Post by Chalo » Dec 02, 2017 6:09 pm

Here's a sampling of centrifugal switches. One of these operating a normally closed contactor might do the job. You'll have to find something that works with your motor shaft and your required cutoff RPM.

https://www.amazon.com/gp/aw/s/ref=is_s ... gal+switch
This is to express my gratitude to Justin of Grin Technologies for his extraordinary measures to save this forum for the benefit of all.

Post Reply