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- Allen Bradley
- 1756-IM16I
- ControlLogix ControlNet Communication Module
- USA
- 30.0 × 3.8 × 11.1 cm
- 0.28kg
- Xiamen, China
- New & In Stock
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1756-IM16I Detailed Product Overview
Product Introduction
The 1756-IM16I is a high-voltage AC digital input module designed for industrial automation systems requiring reliable discrete signal acquisition under medium-to-high voltage conditions. It belongs to the ControlLogix platform and is used for monitoring ON/OFF status signals from field devices in industrial control environments.
This module provides 16 individually isolated AC input channels, making it suitable for applications where multiple high-voltage field signals must be monitored simultaneously. Each channel is electrically isolated to improve signal stability and reduce interference between inputs.
The 1756-IM16I is commonly used in industrial systems such as manufacturing automation lines, heavy machinery control systems, power distribution monitoring, oil and gas facilities, material handling systems, and large-scale process automation plants.
It is designed to operate in demanding environments with electrical noise, vibration, and fluctuating load conditions, ensuring stable and accurate signal detection over long operating periods.
Brand Information
| Item | Details |
|---|---|
| Brand | Allen Bradley |
| Product Category | Digital Input Module |
| Product Type | AC Isolated Input Module |
| Platform | ControlLogix |
| Installation Method | Chassis Mounted |
| Main Function | AC Digital Signal Acquisition |
| Industrial Application | Industrial Automation Systems |
| Signal Type | High-voltage AC input monitoring |
Product Series Overview
ControlLogix Series
The 1756-IM16I belongs to the ControlLogix automation platform, a modular control system designed for complex industrial automation applications requiring high performance and flexibility.
The ControlLogix series is widely used in industrial environments that demand reliable control, scalable architecture, and high-speed data communication.
Key capabilities include:
- Discrete I/O control
- Process automation
- Motion control integration
- Safety system support
- Distributed control systems
- Industrial networking communication
- Real-time diagnostics
- Scalable system architecture
This platform is widely deployed in large industrial plants requiring continuous operation and high system reliability.
Product Features
1. 16-Channel AC Input Design
The module supports 16 independent AC digital input channels, allowing multiple field devices to be monitored simultaneously.
2. High Voltage AC Input Capability
The module supports AC input signals typically in the industrial voltage range of approximately 159–265 VAC, making it suitable for high-voltage signal environments.
3. Individual Channel Isolation
Each input channel is individually isolated, reducing electrical interference and improving system stability.
4. Fast Signal Response
The module provides fast ON/OFF detection suitable for industrial automation processes requiring timely signal updates.
5. Built-in Filtering and Delay Configuration
The module supports configurable input filtering and delay settings to improve signal quality and reduce noise sensitivity.
6. Industrial Diagnostics Support
The module includes diagnostic functions such as:
- Channel status monitoring
- Fault detection
- Input signal validation
- Communication diagnostics
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-IM16I |
| Product Type | AC Digital Input Module |
| Series | ControlLogix |
| Input Channels | 16 Individually Isolated Inputs |
| Input Voltage Range | 159–265 VAC |
| Frequency Range | 47–63 Hz |
| Input Type | AC Digital Input |
| Off-state Voltage | Max 40 V |
| Off-state Current | Max 2.5 mA |
| On-state Current | 5–13 mA (depending on voltage) |
| Input Delay Time | 8–10 ms + filter time |
| Filter Settings | 1 ms / 2 ms selectable |
| Isolation Voltage | 250 V continuous / 1350 V test |
| Backplane Current | Approx. 100 mA |
| Power Dissipation | Approx. 5.8 W |
| Wiring Type | Removable Terminal Block |
| Diagnostics | Channel fault 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 | 2G standard |
| Certifications | CE / UL / CSA |
| Dimensions | 30.0 × 3.8 × 11.1 cm |
| Weight kg（ ） | 0.28 kg |
Product Applications
Manufacturing Systems
Used for monitoring machine status signals, production line switches, and automation interlocks.
Heavy Industrial Machinery
Applied in large equipment systems for detecting operational states and safety signals.
Power Industry
Used in auxiliary system monitoring, breaker status detection, and control signal acquisition.
Oil and Gas Facilities
Monitors valve positions, equipment status, and safety system inputs in high-voltage environments.
Material Handling Systems
Used in conveyor systems, automated storage systems, and logistics control applications.
Water Treatment Systems
Applied in pump monitoring, alarm systems, and process control signal detection.
Product Advantages
High Voltage Compatibility
Supports industrial AC input levels up to 265 VAC, suitable for heavy-duty applications.
Strong Channel Isolation
Each input channel is independently isolated to improve system reliability.
Stable Industrial Operation
Designed for continuous operation in harsh environments with electrical noise and vibration.
Configurable Signal Filtering
Allows adjustment of input filtering and delay to improve signal stability.
Easy System Integration
Fully compatible with ControlLogix modular systems for flexible expansion.
Reliable Diagnostic Functions
Helps reduce downtime by identifying faults quickly.
Recommended Related Models (Same Series)
| Model | Product Type | Key Feature | Channels | Dimensions | Weight kg（ ） |
|---|---|---|---|---|---|
| 1756-IA16 | AC Digital Input Module | Standard AC input | 16 | 30.0 × 3.8 × 11.1 cm | 0.29 kg |
| 1756-IB16 | DC Digital Input Module | DC signal monitoring | 16 | 30.0 × 3.8 × 11.1 cm | 0.30 kg |
| 1756-IB16I | Isolated DC Input Module | Enhanced isolation design | 16 | 30.0 × 3.8 × 11.1 cm | 0.40 kg |
| 1756-IM16I | High-speed AC Input Module | Fast AC signal processing | 16 | 30.0 × 3.8 × 11.1 cm | 0.28 kg |
| 1756-IF16 | Analog Input Module | Analog signal acquisition | 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 | Main 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 | 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 grounded industrial control cabinet with proper ventilation.
Use shielded wiring to reduce electromagnetic interference and improve signal reliability.
Regular inspection of terminal connections helps maintain stable long-term performance.
Summary
The 1756-IM16I is a high-voltage AC digital input module designed for industrial automation systems requiring reliable discrete signal monitoring under demanding conditions.
Its 16-channel isolated architecture, high-voltage compatibility, fast response capability, and strong noise resistance make it suitable for heavy industrial applications.
It is widely used in manufacturing, energy, process control, and infrastructure systems where stable and reliable digital signal acquisition is essential for continuous operation.