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- Allen Bradley
- 1746-IB16
- PLC Module/Rack
- USA
- 249 × 166 × 55 mm
- 0.39kg
- Xiamen, China
- New & In Stock
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
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Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Allen Bradley 1746-IB16 — Comprehensive Technical Overview
1. Product Introduction
The Allen Bradley 1746-IB16 is a digital DC input module designed for modular PLC systems. It is used to receive and process discrete DC signals from field devices such as sensors, switches, and proximity detectors.
This module provides 16 sinking input channels, allowing it to detect signals from devices that supply current (sourcing devices). It converts these field-level DC signals into logic signals that the controller can process for automation tasks.
Installed in a chassis-based system, the module communicates with the processor through the backplane. Its role is essential in monitoring real-time field conditions and feeding that information into the control logic.
2. Brand and Series
- Brand: Allen-Bradley
- Series: SLC 500 Series
- Product Type: Digital DC Input Module (Sinking)
The SLC 500 series is a modular PLC platform widely used in industrial automation. The 1746-IB16 serves as a standard discrete input interface within this system.
3. Product Parameters
Below is a structured technical parameter table for the 1746-IB16:
| Parameter | Specification |
|---|---|
| Model | 1746-IB16 |
| Product Type | Digital DC Input Module |
| Series | SLC 500 |
| Number of Inputs | 16 channels |
| Input Type | Sinking input |
| Nominal Input Voltage | 24 V DC |
| Input Voltage Range | 10–30 V DC |
| Input Current | approx. 8 mA @ 24V DC |
| Input Delay (ON) | approx. 8 ms |
| Input Delay (OFF) | approx. 8 ms |
| Off-State Voltage (max) | 5 V DC |
| Off-State Current (max) | 1 mA |
| Backplane Current (5V) | approx. 50 mA |
| Backplane Current (24V) | 0 mA |
| Isolation | 1500V AC (field to backplane) |
| Power Dissipation | approx. 0.2 W per channel |
| Status Indicators | LED per input |
| Wiring | Removable terminal block |
| Mounting | SLC chassis slot |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Dimensions | approx. 249 × 166 × 55 mm |
| Weight kg（ ） | 0.39 kg |
4. Product Applications
The 1746-IB16 is widely used in industrial automation systems where DC input signals must be monitored:
- Proximity sensor signal detection
- Limit switch status monitoring
- Photoelectric sensor inputs
- Push button and control panel inputs
- Machine status monitoring
- Conveyor and material handling systems
- Packaging and assembly automation
It is particularly suitable for systems using 24V DC field devices, which are common in modern industrial environments.
5. Product Advantages
High channel density
Provides 16 input points in a single module, reducing system size and wiring complexity.
Reliable DC signal processing
Designed specifically for 24V DC systems, ensuring stable and accurate input detection.
Fast response time
Short signal delay allows timely detection of field changes.
Electrical isolation
Protects the PLC system from voltage spikes and electrical noise.
Clear diagnostics
Individual LED indicators make troubleshooting quick and straightforward.
Easy system integration
Fully compatible with modular PLC architecture for seamless installation.
6. Recommended Models (Same Series or Related)
Below are 5 related models within the same SLC 500 series or similar I/O category:
| Model | Series | Function | Power | Dimensions (mm) | Weight kg（ ） |
|---|---|---|---|---|---|
| 1746-IB8 | SLC 500 | 8-point DC input module | 24V DC | 145 × 171 × 130 | 0.30 |
| 1746-IB32 | SLC 500 | 32-point DC input module | 24V DC | 145 × 171 × 130 | 0.45 |
| 1746-IA16 | SLC 500 | 16-point AC input module | 120V AC | 145 × 171 × 130 | 0.35 |
| 1746-OB16 | SLC 500 | 16-point DC output module | 24V DC | 145 × 171 × 130 | 0.40 |
| 1746-A10 | SLC 500 | 10-slot chassis | External | 483 × 171 × 145 | 2.2 |
These modules are often combined to create complete digital I/O systems for automation projects.
7. Recommended Popular Models (Same Brand)
Below are 5 widely used models from the same brand in industrial automation systems:
| Model | Product Type | Key Function | Power | Dimensions (mm) | Weight kg（ ） |
|---|---|---|---|---|---|
| 1747-L551 | PLC CPU | Modular controller | 24V DC | 145 × 140 × 130 | 0.95 |
| 1756-L73 | PLC Processor | High-performance control | 24V DC | 145 × 140 × 130 | 0.90 |
| 1769-L33ER | Compact PLC | Integrated automation control | 24V DC | 118 × 87 × 87 | 0.50 |
| 1734-IB8 | I/O Module | Digital input module | 24V DC | 56 × 12 × 75 | 0.12 |
| 1756-OB16E | Digital Output Module | 16-point output | 24V DC | 137 × 140 × 130 | 0.40 |