Controller Power

that connecting one wire of a given battery potential will eliminate the need for connecting the other. Malfunction or even damage may occur if one wire is assuming the load of all

two.

 

 

 

 

 

 

 

 

Mot1(-)

 

 

 

 

Mot1(+)

Channel 1 MOSFET Power Stage

 

5Vmin

VBatt Vmot

 

 

 

40V max

GND

 

 

 

 

 

 

 

Power

 

 

ENABLE

Control

Microcomputer &

9.5V min

&Backup

 

10.5V min

 

 

MOSFET Drivers

13V max

DC/DC

 

40V max

GND

 

 

 

 

 

 

 

Channel 2 MOSFET Power Stage

 

5Vmin

GND

 

40V max

VBatt Vmot

 

 

 

 

 

 

 

 

 

 

 

Mot2(+)

 

 

 

 

Mot2(-)

FIGURE 9. Representation of the AX2500/2850’s Internal Power Circuits

TABLE 4. Effect of Power Control under various voltage conditions

Power Control input is

And Main Battery

 

connected to

Voltage is

Action

 

 

 

Ground

Any Voltage from 0V to 40V

Controller is Off

 

 

 

Floating

Below 9V

Controller is Off

 

 

 

Floating

Between 9V and 10.5V

Controller Logic is On

 

 

Power Stage is Disabled (under-

 

 

voltage condition)

 

 

 

Floating

Between 10.5 and 40V

Controller is On. Drawing power

 

 

from Main Battery

 

 

Power Stage is Active

 

 

 

10.5V to 40V

Lower than Voltage on Power

Controller is On. Drawing power

 

Control input - or Off

from external source (backup

 

 

battery)

 

 

Power Stage is Active

 

 

 

10.5V to 40V

Higher than Voltage on Power

Controller is On. Drawing power

 

Control input

from Main Battery

 

 

Power Stage is Active

 

 

 

AX2500/2850 Motor Controller User’s Manual

27

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Image 27
RoboteQ AX2550/2850 user manual Controller Power, Two