1794-IV16 Flex I/O 16-Channel Sourcing Input Card 24V DC

Availability: 20 left in stock

Product Overview The Allen-Bradley 1794-IV16 functions as a high-density digital input solution for the Flex I/O platform. It provides 16 nonisolated sourcing...

SKU: 1794-IV16

Manufacturer: Allen Bradley
Product No.: 1794-IV16
Product Type: Flex I/O 1794 Series
Product Origin: USA
Payment:T/T, Western Union
Weight: 900g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The Allen-Bradley 1794-IV16 functions as a high-density digital input solution for the Flex I/O platform. It provides 16 nonisolated sourcing inputs, allowing for efficient monitoring of field devices such as sensors, limit switches, and pushbuttons. Designed to reduce cabinet space and wiring costs, this module interfaces directly with a terminal base to provide distributed control capabilities. We offer this unit as 100% Brand New and Factory Sealed, ensuring original manufacturer integrity for your critical automation infrastructure.

Technical Specifications

Feature	Specification
Number of Inputs	16 Nonisolated, Sourcing
Nominal On-State Voltage	24V DC
On-State Voltage Range	10V DC to 31.2V DC
Nominal On-State Current	8.0 mA @ 24V DC
Maximum On-State Current	11.0 mA
Maximum Off-State Voltage	5V DC
Minimum Off-State Current	1.5 mA
Maximum Input Impedance	4.7 kΩ
Indicators	16 Yellow Status LEDs
Module Type	Flex I/O Digital Input

Engineering Advantages

Sourcing Input Logic: The 1794-IV16 utilizes sourcing inputs, making it compatible with field devices that "sink" current to the common. This configuration simplifies wiring in systems where the power supply positive is commoned across multiple sensors.
Space-Efficient Distributed I/O: The Flex I/O architecture allows you to mount the 1794-IV16 close to the field devices. This modular approach eliminates long multi-conductor cable runs back to a central PLC rack, significantly reducing installation labor and material costs.
Real-Time Diagnostics: 16 individual yellow LED indicators provide immediate visual confirmation of input states. Technicians can troubleshoot field-side wiring faults instantly without opening a programming terminal.
Rugged Reliability: The module operates reliably within a broad DC voltage window (10–31.2V), accommodating the voltage fluctuations common in industrial battery-backed or unregulated power systems.

FAQs

Which terminal base units are compatible with the 1794-IV16?

The 1794-IV16 requires a 1794 terminal base for operation. Common compatible bases include the 1794-TB3 and 1794-TB3S. Always verify your wiring requirements (screw clamp vs. spring clamp) before selecting the base.

What is the difference between a sourcing input (1794-IV16) and a sinking input (1794-IB16)?

A sourcing input module like the 1794-IV16 provides power to the input circuit, whereas a sinking module requires the field device to provide the power. You must match the module type to the output logic of your sensors (NPN vs. PNP) to ensure proper signal detection.

Can I replace the 1794-IV16 while the system is under power?

Flex I/O modules support Removal and Insertion Under Power (RIUP). You can swap the module without disturbing the rest of the I/O on the same communication adapter, which minimizes process downtime during maintenance.

Does this module provide channel-to-channel isolation?

No. The 1794-IV16 features nonisolated inputs, meaning the channels share a common return within the module. For applications requiring individual isolation to prevent ground loops between different power sources, you should consult the Allen-Bradley catalog for isolated-specific variants.

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