Datasheet

6 SBLM23xx Motor Controller Datasheet Version 1.2 July 25, 2020
PwrCtrl
SW1 Main
On/Off Switch 1A
F2
1A
Diode
>20A
Resistor
1K, 0.5W
+-
F1
I/O Connector
VMot
to +40V Max
Digital Out
Ground
Ground
Main
Battery
FIGURE 4. Contactor Wiring Diagram
The contactor coil must be connected to a digital output configured to activate when “No MOSFET Failure”.
The controller will automatically deactivate the coil if the output is expected to be off and battery current of 1A
or more is measured for more than 0.5s. This circuit will not protect against other sources of failure such as
those described in the “Important Safety Disclaimer” on page 3.
Power and Motor Connections
Connection to the battery is made using two a 4-pin Molex MegaFit connectors. Use mating connector model
170001-0104. Both GND and VMOT pins are doubled in order to carry higher current.
Another 4-pin Molex MegaFit connector is provided for each motor. 3 pins supply the U, V and W phase
voltages. A Ground pin can be used for an optional motor cable shield.
A 2-pin Molex MicroFit connector is provided for connecting a brake for each motor (see next section). Use
mating connector model 43645-0200
U V
Motor 1Motor 2
2xGND
2xVMOT
GND W
U V
GND W
Brk+
Brk-
Brk+
Brk-
FIGURE 5. SBLM23xx Power and Motor Connectors