RoboteQ AX2850 user manual Connecting to the Batteries and Motors

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 the set of wires coming out from the back of the controller.

Motor2	Optional
Power switch
+	Diode	Fuse
	On
-
	Off
+
-	Optional
Motor1	Emergency
	Disconnect

VMot	M1-	M1+	PwrCtrl GND GND	GND	M2-	M2+	VMot
								12V to 24V
			Controller					Motor Battery

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. AX2550 Electrical Power Wiring Diagram

1- Connect each motor to one of the two M+ and M- cables pairs. Make sure to respect the polarity, otherwise the motor(s) may spin in the opposite direction than expected

2- Connect the two thick black wires to the minus (-) terminal of the battery that will be used to power the motors. Connect the two thick red wires 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 Emer- gency disconnect. 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 red wires are connected to each other inside the controller. The same is true for the black wires. You should wire each pair together as shown in the diagram above.

3- The yellow Power Control wire and the thin black wire 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 discharges. Refer to the chapter “Connecting Power and Motors to

AX2550 Motor Controller User’s Manual 17