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- Allen Bradley
- 1756-IH16I
- ControlLogix ControlNet Communication Module
- USA
- 14.5 × 11.2 × 5.6 cm
- 0.4kg
- Xiamen, China
- New & In Stock
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1756-IH16I Detailed Product Overview
Product Introduction
The 1756-IH16I is a high-density digital input module designed for industrial automation systems requiring reliable discrete signal acquisition. It belongs to the ControlLogix platform and is used for monitoring ON/OFF signals from field devices in large-scale industrial environments.
This module provides 16 isolated digital input channels, allowing efficient collection of status signals from switches, proximity sensors, limit switches, relays, push buttons, and other discrete field devices. It is engineered for stable operation in electrically noisy and mechanically demanding environments.
The 1756-IH16I is widely applied in industries such as manufacturing automation, automotive production, packaging systems, material handling, oil and gas facilities, power plants, water treatment systems, and general industrial process control.
Its isolated input design improves signal reliability, reduces electrical interference, and ensures stable operation under harsh industrial conditions.
Brand Information
| Item | Details |
|---|---|
| Brand | Allen Bradley |
| Product Category | Digital Input Module |
| Product Type | High-density Isolated Input Module |
| Platform | ControlLogix |
| Installation Method | Chassis Mounted |
| Main Function | Digital Signal Acquisition |
| Industrial Application | Industrial Automation |
| System Compatibility | PLC Control Systems |
Product Series Overview
ControlLogix Series
The 1756-IH16I belongs to the ControlLogix automation platform, a modular control system designed for complex industrial automation applications.
The ControlLogix series is known for high performance, flexible architecture, and strong integration capability across industrial systems.
Key system capabilities include:
- Discrete control processing
- Process automation integration
- Distributed I/O architecture
- High-speed communication
- Motion and safety control support
- Industrial network connectivity
- Real-time diagnostics
- System scalability
The platform is widely used in large industrial environments requiring continuous and stable operation.
Product Features
1. 16-Channel Digital Input Design
The module provides 16 digital input channels for monitoring multiple field signals simultaneously.
This reduces system complexity and improves control cabinet space efficiency.
2. Isolated Input Channels
Each input channel is electrically isolated to reduce noise interference and improve signal stability.
3. Fast Signal Response
The module supports fast ON/OFF signal detection, making it suitable for high-speed industrial automation applications.
4. Strong Noise Immunity
Designed for industrial environments with motors, drives, and high-voltage equipment, the module maintains stable signal performance under electromagnetic interference.
5. Built-in Diagnostics
The module supports diagnostics features such as:
- Input status monitoring
- Fault detection
- Signal verification
- Channel diagnostics
6. Modular Integration
The module integrates seamlessly into ControlLogix systems, allowing flexible expansion and system upgrades.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-IH16I |
| Product Type | Digital Input Module |
| Series | ControlLogix |
| Input Channels | 16 Digital Inputs |
| Input Type | Isolated DC Digital Input |
| Voltage Range | 12–24 VDC (typical industrial range) |
| Input Response Time | Fast response (ms level) |
| Isolation | Channel-to-backplane isolation |
| Backplane Current | Approx. 100–150 mA |
| Power Dissipation | Approx. 2.0–3.0 W |
| Input Signal Type | ON/OFF discrete signals |
| Wiring Type | Removable terminal block |
| Diagnostics | Channel status monitoring |
| Mounting Method | Chassis mount |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Shock Resistance | Industrial grade |
| Vibration Resistance | High stability design |
| Certifications | CE / UL / CSA |
| Dimensions | 14.5 × 11.2 × 5.6 cm |
| Weight kg（ ） | 0.40 kg |
Product Applications
Manufacturing Automation
Used for monitoring machine status signals, safety switches, and production line sensors.
Automotive Industry
Commonly used in assembly lines, robotic systems, and quality inspection equipment.
Packaging Systems
Used to detect conveyor positions, actuator states, and machine cycle signals.
Oil and Gas Facilities
Monitors equipment status, valve positions, and safety interlocks.
Power Generation Plants
Used in auxiliary system monitoring and control signal acquisition.
Water Treatment Systems
Used for pump status monitoring, valve control feedback, and alarm signals.
Product Advantages
High Channel Density
16 input channels reduce the number of modules required, saving cabinet space.
Strong Electrical Isolation
Improves reliability in environments with high electrical noise.
Fast Response Performance
Suitable for high-speed industrial automation systems.
Easy Maintenance
Built-in diagnostics simplify troubleshooting and reduce downtime.
Flexible Integration
Seamless compatibility with ControlLogix systems and industrial networks.
Industrial Durability
Designed for long-term operation in harsh industrial environments.
Recommended Related Models (Same Series)
| Model | Product Type | Key Feature | Channels | Dimensions | Weight kg（ ） |
|---|---|---|---|---|---|
| 1756-IA16 | AC Digital Input Module | AC signal monitoring | 16 | 14.5 × 11.2 × 5.6 cm | 0.42 kg |
| 1756-IB16 | DC Digital Input Module | Standard DC input | 16 | 14.5 × 11.2 × 5.6 cm | 0.41 kg |
| 1756-IB16I | Isolated Digital Input | Enhanced isolation design | 16 | 14.5 × 11.2 × 5.6 cm | 0.40 kg |
| 1756-IM16I | High-speed Input Module | Fast signal processing | 16 | 14.5 × 11.2 × 5.6 cm | 0.43 kg |
| 1756-IF16 | Analog Input Module | Mixed signal system use | 16 | 14.5 × 11.2 × 5.6 cm | 0.48 kg |
Popular Models from Same Brand
| Model | Product Type | Function | Communication | Dimensions | Weight kg（ ） |
|---|---|---|---|---|---|
| 1756-L81E | PLC Controller | System control processor | EtherNet/IP | 15.2 × 14.0 × 5.5 cm | 0.62 kg |
| 1756-EN2TR | Ethernet Module | Industrial networking | EtherNet/IP | 14.5 × 11.2 × 5.6 cm | 0.50 kg |
| 1734-AENTR | Remote I/O Adapter | Distributed I/O system | EtherNet/IP | 13.2 × 7.5 × 5.0 cm | 0.30 kg |
| 2711P-T10C4D8 | HMI Panel | Operator interface terminal | Ethernet/USB | 27.1 × 21.1 × 6.0 cm | 1.80 kg |
| 25B-D017N104 | VFD Drive | Motor speed control | EtherNet/IP | 35.0 × 21.6 × 18.0 cm | 4.90 kg |
Installation Notes
The module should be installed in a properly grounded industrial control cabinet.
Shielded wiring is recommended to reduce noise interference and improve signal stability.
Regular inspection of terminal connections ensures long-term operational reliability.
Summary
The 1756-IH16I is a high-density isolated digital input module designed for industrial automation systems requiring reliable and fast discrete signal acquisition.
Its 16-channel structure, strong electrical isolation, fast response capability, and stable industrial design make it suitable for demanding automation environments.
It is widely used in manufacturing, energy, process control, and infrastructure systems where reliable signal detection and continuous operation are essential.