CM2904 Instruction Book © 2009 - 2022 Parker-Hannifin Corporation Page 42 of 51
Application Examples
Connecting Common Sensors
The following shows a typical open collector sensor connection:
Figure 11: Open collector active high installation connection installation connection
installation connection installation connection installation connection connection
9.3.2. Switch Sensors
A switch is a type of sensor that uses mechanical contacts in one of two states: open
or closed. Sensor switches are used to turn sensors on and off, and can be wired
directly to digital inputs.
Active-high sensor switches
may be used by the product. For active-high switches
use an input with internal pull-down resistor.
The following shows a typical sensor switch connection:
Figure 12: Switch sensor active high installation connection
9.3.3. Voltage Sensors
Voltage type sensors work by driving an analog voltage signal to report the sensor's
measured value.
Voltage sensors are compatible with Analog Inputs (refer to chapter 5.2.1), and are
typically used in applications that require variable voltage measurements.
