User Manual

RoboClaw Series
Brushed DC Motor Controllers
RoboClaw Series User Manual
41
Logic Battery Wiring
An optional logic battery is supported. Under heavy loads the main power can suffer voltage
drops, causing potential logic brown outs which may result in uncontrolled behavior. A separate
power source for the motor controllers logic circuits, can remedy potential problems from main
power voltage drops. The logic battery maximum input voltage is 34VDC with a minimum input
voltage of 6VDC. The 5V regulated user output is supplied by the secondary logic battery if
supplied. The mAh of the logic battery should be determined based on the load of attached
devices powered by the regulated 5V user output.
Logic Battery Jumper
A logic battery is used in the congurtion below. Some models of RoboClaw have a jumper to set
the logic battery. On models where the LB-MB header is present the jumper must be removed
when a logic battery is used. If the header for LB-MB is not present, then the RoboClaw will
automatically set the logic battery power source.
+
-
Battery
Motor 1
Motor 2
R1
F1
D1
M1A
M1B
M2B
M2A
B-
B+
ROBOCLAW
F2
+
-
Logic
Battery
SW1
SW2
GND
LB+