Vansco VMM3120 User Manual

User Guide 67
Application Examples
9.7.7. Potentiometer (Ratiometric)
Potentiometers and other ratiometric type sensors can be wired directly to analog
inputs.
Potentiometers are resistive devices that use a wiper arm to create a voltage
divider. Changes to resistive measurements happen as the wiper arm moves along
a resistive element.
When connecting potentiometer sensors, it is important to do the following:
 Connect one end of the sensor to the SENSOR_SUPPLY pin, and the other end to
a GND pin on the VMM3120.
 Connect the sensor signal to an analog input.
The following shows a typical potentiometer sensor connection:
Internal to product
Sensor Voltage
Sensor Ground
Potentiometer
Analog Input
Figure 37: Potentiometer (ratiometric) sensor connection

Vansco VMM3120 Specifications

General

Brand	Vansco
Model	VMM3120
Category	Control Unit
Language	English