Using the ATAVRAUTO200
2-6
ATAVRAUTO200 User Guide
7698A–AUTO–01/07
Figure 2-4.
Power supply measurement through ADC1
2.4.3
Motor relay
DC Motor can be operated through a relay. It is supplied with Vbat, -Vbat or 0V.
The relay allows the motor to be operated in two rotating directions, or to be stopped.
Table 2-2.
Motor Relay commands
Figure 2-5.
Motor on board command schematics
Function
Port
State
Description
Mot_A
PB1
Low/
Relay coil1 OFF (Normaly closed switch activated)
High
Relay coil1 ON (Normaly opened switch activated)
Mot_B
PB2
Low
Relay coil2 OFF (Normaly closed switch activated)
High
Relay coil2 ON (Normaly opened switch activated)
Table 2-3.
Logical command table
Mot_A
Mot_B
Motor Supply
Description
L
L
0V
Motor stopped
L
H
-Vbat
Motor running (Direction B)
H
L
+Vbat
Motor running (DirectionA)
H
H
0V
Motor stopped
