Filter
Top Products
AX3500 Motor Controller User’s Manual 17
Connecting to the Batteries and Motors
Connecting to the Batteries and Motors
Connection to the batteries and motors is shown in the figure below and is done by con-
necting wires to the Fast-on tabs on the controller.
1- Connect each motor to one of the two M+ and M- tabs pairs. Make sure to respect the
polarity, otherwise the motor(s) may spin in the opposite direction than expected
2- Connect two of the three Ground tabs to the minus (-) terminal of the battery that will be
used to power the motors. Connect the two VMot tabs the two VMot terminals to the plus
(+) terminal of the battery. The motor battery may be of 12 to 40 Volts. There is no need to
insert a separate switch on Power cables, although one is suggested for Emergency dis-
connect. See “Controller Power” on page 30 for a detailed discussion and more wiring
options.
Avoid extending the length of wires from the battery to the controller as the added induc-
tance may cause damage to the controller when operating at high currents. Try extending
the motor wires instead since the added inductance on the motor side of the controller is
not harmful.
The two VMot tabs are connected to each other inside the controller. The same is
true for the tabs. You should wire each pair together as shown in the diagram above.
3- The Power control tab MUST be connected to Ground to turn the Controller Off. For
turning the controller On, even though the Power Control may be left floating, whenever
possible pull it to an unfused12V or higher voltage to keep the controller logic solidly On.
You may use a separate battery to keep the controller alive as the main Motor battery dis-
charges. Refer to the chapter “Connecting Power and Motors to the Controller” on
page 29 for more information about batteries and other connection options.
12V to 24V
Motor Battery
Power switch
On
Off
Optional
Emergency
Disconnect
Optional
Diode
-
-
+
+
Motor1
Motor2
Controller
Fuse
VMot
VMot
M1-
M1+
PwrCtrl
GND
GND
GND
M2+
M2-
Notes:
- The Battery Power connection are doubled in order to provide the maximum current to the controller. If
only one motor is used, only one set of motor power cables needs to be connected.
- Typically, 1, 2 or 3 x 12V batteries are connected in series to reach 12, 24 or 36V respectively.
- The Power Control wire MUST be used to turn On and Off the controller.
FIGURE 3. AX3500 Electrical Power Wiring Diagram