Allen Bradley 1746-IV16 Digital Input Module

Product Introduction

The Allen Bradley 1746-IV16 Digital Input Module is an industrial-grade module designed for the SLC I/O series. It provides 16 sinking DC inputs for 10–30 V DC devices, allowing the PLC to monitor the status of switches, sensors, and other field devices.

The module is engineered for reliable operation in industrial environments, with a maximum input current of 85 mA per point and low backplane current load of 5 V DC, reducing stress on the PLC backplane. The IV16 module ensures accurate signal detection, fast response, and seamless integration into SLC 500 racks for easy installation and system expansion.

Its compact design, combined with robust industrial-grade construction, makes the 1746-IV16 ideal for process automation, manufacturing systems, and other control applications requiring precise digital input monitoring.

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Product Specifications

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Applications

• Monitoring 16 DC inputs from switches, sensors, pushbuttons, and other devices

• Integration with SLC I/O PLC systems for process and machine automation

• Used in manufacturing lines, material handling, and assembly systems

• Expansion of existing PLC input capacity with precise digital signal detection

• Industrial control systems where stable and accurate input monitoring is required

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Advantages

• Accurate sinking DC input detection, ensuring reliable PLC monitoring

• Low backplane current load minimizes stress on the PLC system

• Electrical isolation protects the PLC from voltage spikes and noise

• Compact and modular design allows multiple modules in SLC 500 racks

• High reliability for continuous operation, suitable for industrial duty cycles

• Fast and precise input monitoring, ideal for time-sensitive applications

FAQ

1. How many digital inputs does the 1746-IV16 support?
   It supports 16 sinking DC input points, allowing the PLC to monitor multiple field devices simultaneously.

2. What input voltage range is supported?
   10–30 V DC, compatible with most standard industrial DC devices.

3. What is the maximum input current per point?
   The module supports up to 85 mA per input, ensuring stable operation without overloading the module.

4. Does the module provide electrical isolation?
   Yes, the inputs are electrically isolated from the PLC backplane to protect internal circuitry.

5. What is the backplane current load of the module?
   The backplane current load is 5 V DC, minimizing stress on the PLC rack during operation.

6. Is it suitable for continuous industrial operation?
   Yes, it is designed for reliable, continuous-duty use in industrial environments.

7. Can it be used to expand existing PLC input capacity?
   Yes, additional modules can be added to increase the number of monitored inputs.

8. What types of devices can it interface with?
   Sinking DC devices such as pushbuttons, limit switches, proximity sensors, and other 10–30 V DC equipment.

9. How is the module installed?
   It mounts into a standard SLC 500 rack slot, connecting directly to the PLC backplane.

10. Is it suitable for applications requiring fast signal detection?
    Yes, it is optimized for rapid input monitoring, ideal for automation tasks that require timely response.

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