RoboteQ AX2550 Manual Do Utilizador
AX1500 Motor Controller User’s Manual
75
Wiring Limit Switches Without Encoders
Wiring Limit Switches Without Encoders
If no encoder is used, the Encoder Module’s inputs can be used to wire limit switches
directly with solely a pull-up resistor as shown in the diagram below.
directly with solely a pull-up resistor as shown in the diagram below.
Effect of Limit Switches
Each pair of limit switches will stop the motion of a given motor in a given direction. This
will have the effect of stopping the motor when a limit is reached while allowing motion in
the other direction, away for that limit.
will have the effect of stopping the motor when a limit is reached while allowing motion in
the other direction, away for that limit.
TABLE 13. Effects of Limit Switches 1 and 2 on Motor 1
SW1
SW2
Motor 1 Fwd
Motor 1 Rev
OFF
OFF
Allowed
Allowed
ON
OFF
Stopped
Allowed
OFF
ON
Allowed
Stopped
ON
ON
Stopped
Stopped
TABLE 14. Effects of Limit Switches 3 and 4 on Motor 2
SW3
SW4
Motor 2 Fwd
Motor 2 Rev
OFF
OFF
Allowed
Allowed
ON
OFF
Stopped
Allowed
SW3
SW4
Encoder Input
GND
5V Out
Ch B In
Ch B In
Ch A In
6
1
2
5
8 - 4
7 - 3
Ch A In
4.7kOhm
4.7kOhm
SW1
SW2
4.7kOhm
4.7kOhm
FIGURE 45. Signals seen by encoder using multi-levels and limit switches