PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1794-IB16D is a FLEX I/O digital input module with diagnostic capabilities. It provides 16 sinking current inputs operating at a nominal voltage of 24V DC. Input detection occurs between 10V DC and 32V DC. This unit features adjustable digital signal filtering time. Modular construction helps reduce system commissioning time and troubleshooting duration.
The module detects disconnected field wiring and open device circuits. It also identifies shorted input wiring and reversed DC power supply polarity. The front panel includes 33 total indicator lights for monitoring. These include 16 yellow channel LEDs and 16 red diagnostic LEDs. One red indicator reports module faults. Mounting requires a 1794-TB32 or 1794-TB32S terminal base.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Product Line | Flex I/O 1794 |
|---|
| UPC | 612598305957 |
|---|
| Weight | 0.25 lbs (0.11 kg) |
|---|
| Inputs | 16 Sinking Current |
|---|
| On-state Voltage nom. | 24V DC |
|---|
| On-state Current max. | 1.5mA |
|---|
| Nominal Input Impedance | 3.1 k? |
|---|
| Sensor Power Current | 50mA max. |
|---|
| Sensor Power Voltage Drop | 2.2V DC max. |
|---|
| Isolation Voltage | 50V Continuous |
|---|
| Flexbus Current | 30mA @ 5V DC |
|---|
| Power Dissipation | 8.5W @ 31.2V DC max. |
|---|
| Thermal Dissipation | 29 BTU/hr. @ 31.2V DC max. |
|---|
TECHNICAL INFORMATION
Features
- Provides 16 sinking current digital input channels.
- Operates at a nominal input voltage of 24V DC.
- Detects disconnected field wiring and open device circuits.
- Identifies shorted input wiring and reversed DC power polarity.
- Includes 33 total status, diagnostic, and fault LED indicators.
- Allows users to adjust digital input signal filter times.
TECHNICAL INFORMATION
Applications
- Discrete signal monitoring in industrial automation architectures.
- Remote I/O stations utilizing Allen-Bradley FLEX I/O terminal bases.
- Field device monitoring requiring circuit open and short detection.
TECHNICAL INFORMATION
Connections / Interfaces
- Mounts directly onto 1794-TB32 or 1794-TB32S terminal base units.
- Integrates with adjacent modules via the sliding Flexbus connector.
TECHNICAL INFORMATION
Installation Guidelines
- Set the keyswitch on the terminal base to Position 4 before insertion.
- Push the Flexbus connector completely to the left toward adjacent bases.
- Align the module with the terminal base and press firmly to seat.
TECHNICAL INFORMATION
Configuration Guidelines
- Verify the terminal base keyswitch is in Position 4 prior to installation.
- Configure input filter times through controller software parameters.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley 1794-TB32 terminal base units.
- Compatible with Allen-Bradley 1794-TB32S terminal base units.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley 1794-TB32 terminal base units. Compatible with Allen-Bradley 1794-TB32S terminal base units.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What terminal base units support the Allen-Bradley 1794-IB16D?
The 1794-IB16D module mounts on 1794-TB32 and 1794-TB32S terminal base units.
What diagnostic conditions does the 1794-IB16D module detect?
It detects disconnected wires, open field circuits, shorted wiring, and reversed DC power supply connections.
What is the keyswitch position for the 1794-IB16D?
Set the terminal base keyswitch to Position 4 before seating the module.
What is the Flexbus current draw of the 1794-IB16D?
The module requires 30mA of Flexbus current at 5V DC.
What is the indicative price for the 1794-IB16D?
Pricing depends on condition and stock. Figures are indicative market reference pricing only and not a final quotation.
