You first look at the way the engine is turning in the vehicle you want to
convert to a EV and that's the way you want the motor to turn.
Then you the four motor terminals in a specific way to turn in the same way
the engine turn.
Lets say the motor terminals are label A1, A2, S1, and S2. The A1 and A2 is
the brush circuit and commentator windings and the S1 and S2 is the field
windings.
The commentator windings are connected in series with the field windings for
a DC series motor.
You can test out the rotation by applying a 12 volt battery power directly
to the motor to test the rotation. Connect the +12 vdc to A1. Install a
wire jumper from A2 to S1 and connect the -12 vdc to S2.
Always connect the battery leads first to the motor and connect last to a
battery in a very quick motion or you will get a lot a arcing. I use one of
those 500 amp 12 volt red key flag battery cutoff switches that you can get
from any auto parts store.
Now if the motor is going in the wrong direction, then connect A2 to S2 and
connect the -12 vdc to s1. It should turn the other way.
Roland
----- Original Message -----
From: <[email protected]>
To: "ev list" <[email protected]>
Sent: Friday, November 02, 2007 7:44 PM
Subject: [EVDL] Question on Series DC motor
> How do you determine which direction a Series DC motor should run?
> Thanks
> Rick
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>
_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
convert to a EV and that's the way you want the motor to turn.
Then you the four motor terminals in a specific way to turn in the same way
the engine turn.
Lets say the motor terminals are label A1, A2, S1, and S2. The A1 and A2 is
the brush circuit and commentator windings and the S1 and S2 is the field
windings.
The commentator windings are connected in series with the field windings for
a DC series motor.
You can test out the rotation by applying a 12 volt battery power directly
to the motor to test the rotation. Connect the +12 vdc to A1. Install a
wire jumper from A2 to S1 and connect the -12 vdc to S2.
Always connect the battery leads first to the motor and connect last to a
battery in a very quick motion or you will get a lot a arcing. I use one of
those 500 amp 12 volt red key flag battery cutoff switches that you can get
from any auto parts store.
Now if the motor is going in the wrong direction, then connect A2 to S2 and
connect the -12 vdc to s1. It should turn the other way.
Roland
----- Original Message -----
From: <[email protected]>
To: "ev list" <[email protected]>
Sent: Friday, November 02, 2007 7:44 PM
Subject: [EVDL] Question on Series DC motor
> How do you determine which direction a Series DC motor should run?
> Thanks
> Rick
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>
_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev