Sure lots of us could since it is something that we have all done before.
Do you have a specific motor and controller in mind? Do you understand some
basics about electrical circuits?
My setup which is rather common goes like this. It is essentially one big
series circuit. The batteries are all wired in series which means that you
hook them up positive to negative to make one large battery (6 12 volt
batteries makes one 72 volt battery). My motor and controller are both
connected in series with this battery. I have a series wound motor with the
field windings available so I can reverse the field which reverses rotation.
I also have an Alltrax 4844 controller which has 3 terminals as well as a
fuse and a switch. Hooking the controller and motor into the circuit is
pretty straight forward. If you have a series wound DC motor like I have
with 4 terminals available you have to strap one of the armature leads to
one of the field leads (usually marked A1,A2 and S1,S2), this controls the
direction of the rotation. Then you hook the M- and B+ terminals of your
controller to the remaining two terminals on the motor. It doesn't matter
which one goes where so just do whatever is convenient. You also hook your
battery pack to your controller. The positive side goes to the B+ lead and
the negative side goes to the B- lead. If you have a controller with 4
terminals the other terminal is usually marked A1 and you don't hook
anything to it. This lead is only used for plug or regen braking or with a
reversing contactor to allow you to have an electronic reverse, these
options are not often used with a motorcycle.
You also might want to include a main switch/contactor, circuit breaker,
fuse, and or shunt somewhere in the circuit, but where exactly is usually a
matter of choice. Also most controllers with have some small terminals for
hooking up things like a throttle, key on switch, Hi Pot lockout, half power
reverse and other possible options. You really need to know the specific
controller to know which is which although it may be marked on the case.
There really are only to tricky parts to this, one is knowing how to make
the motor spin, and the second is making the right connections to the
controller. The way I remember how to hook up the contorllers is that you
almost always have only 1 wire going to B- from the negative side of the
battery, and only 1 wire going to the M- coming from the motor. Everything
else gets connected to B+.
Of course you really should check the documentation for the controller you
are using, which may include lots of extra circuitry for options you are not
using. You need to be able to weed through the stuff you don't need then
see if what I have just written applies to your specific case.
A couple of easy tricks for testing your connections include. To test and
make sure your motor spins in the right direction make the armature and
field connections then use a 12 volt battery and a pair of jumper cables to
spin the motor. Be sure the motor is being held in place, or it will roll
away form you. Also before you hook your controller to your motor you can
test your wiring by taking the two leads that will be connecting to the
motor and instead connecting them to a light bulb. Ramping up the throttle
should make the light bulb light up brighter. If you are using a 48 volt
controller and a 120 volt light bulb it will not light up very bright, but
you should be able to see it gradually increase from off to on about half
way.
damon
From: Henry Heng <[EMAIL PROTECTED]>
Reply-To: ElectricMotorcycles <[email protected]>
To: ElectricMotorcycles <[email protected]>
Subject: [ElectricMotorcycles] Wirings
Date: Tue, 26 Jun 2007 00:47:20 +0900
Could anyone explain to me how the motor, controller and batteries should
be wired together?
Also, can I use a typical bike tachometer, if not, how else should I
calculate the rpms?
Thanks
Henry
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