1746-IV16 | Allen-Bradley SLC 500 24V DC Input Module 16-Channel Sourcing

The 1746-IV16 is an Analog Input Module from Allen-Bradley, specifically designed for the SLC 500 series PLC. It is used to interface analog sensors (such as temperature, pressure, or flow sensors) with the PLC system. This module provides 16 input channels for analog signals, typically supporting 0-10V DC or 4-20mA input ranges.

The manual for the 1746-IV16 module can be obtained from the Rockwell Automation website. You can find the manual by:

1. Visiting the Rockwell Automation or Allen-Bradley support site.
2. Searching for 1746-IV16 or Analog Input Module.
3. Navigating to the Product Documentation section to download the user manual, which will include wiring diagrams, configuration details, and troubleshooting guidelines.

The 1746-IV16 module supports two main types of input signals:

1. Voltage Input (0-10V DC): This input type is used for sensors that provide a voltage signal proportional to the measurement, such as temperature sensors, pressure transducers, or flow meters.
2. Current Input (4-20mA DC): This input type is commonly used for sensors with a current output, often used for industrial process control applications like pressure or temperature measurements.

You need to configure the module properly in the PLC program to match the input type used in your system.

To configure the 1746-IV16 in an SLC 500 PLC program:

1. Add the module to the I/O configuration in the RSLogix 500 programming software.
2. Assign addresses for the input channels in the program. For example, each analog input channel will be mapped to a specific memory location in the PLC (e.g., N7:0 for the first input channel).
3. Scaling: Set up the scaling for the analog inputs to convert the raw input values into engineering units. This is done by defining the input range (e.g., 0-10V or 4-20mA) and scaling it to a meaningful value (e.g., temperature in degrees Celsius or pressure in PSI).
4. Configure the input type (Voltage or Current) based on your application and sensor type.

Consult the RSLogix 500 programming manual and the 1746-IV16 user manual for specific details on setting up the configuration and scaling parameters.

The 1746-IV16 module has a 12-bit resolution for each input channel. This means the module can represent the analog input signals with 4,096 discrete levels (2^12) for each channel, providing accurate readings and measurements within the input range.