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- Allen Bradley
- 1756-IM16I/A
- 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/A Detailed Product Overview
Product Introduction
The 1756-IM16I/A is an industrial-grade high-voltage AC digital input module designed for discrete signal acquisition in demanding automation systems. It belongs to the ControlLogix platform and is used to collect ON/OFF status signals from field devices operating under AC voltage conditions.
This module provides 16 individually isolated AC input channels, enabling reliable monitoring of multiple industrial signals at the same time. Each channel is designed to maintain stable operation even under electrical noise, vibration, and fluctuating industrial power conditions.
The 1756-IM16I/A is commonly used in automation environments such as manufacturing production lines, heavy machinery systems, power distribution monitoring, oil and gas facilities, material handling systems, and large-scale industrial control applications.
Its robust design ensures consistent performance in harsh environments where long-term reliability and accurate signal detection are required.
Brand Information
| Item | Details |
|---|---|
| Brand | Allen Bradley |
| Product Category | Digital Input Module |
| Product Type | AC High-Voltage Input Module |
| Platform | ControlLogix |
| Installation Method | Chassis Mounted |
| Main Function | AC Digital Signal Acquisition |
| Application Field | Industrial Automation Systems |
| Signal Type | AC Discrete Input |
Product Series Overview
ControlLogix Series
The 1756-IM16I/A is part of the ControlLogix modular automation system, designed for complex industrial control environments requiring flexibility, scalability, and high reliability.
The ControlLogix series supports a wide range of automation functions including:
- Discrete input/output control
- Process automation systems
- Motion control integration
- Safety system coordination
- Distributed I/O architectures
- Industrial communication networks
- Real-time diagnostics and monitoring
- Modular system expansion
This platform is widely adopted in industrial sectors requiring continuous operation and stable performance.
Product Features
1. 16 AC Input Channels
The module provides 16 independent AC input channels for monitoring multiple field devices simultaneously.
2. High Voltage Input Capability
Supports industrial AC input signals typically in the range of 159–265 VAC, suitable for heavy-duty applications.
3. Channel Isolation Design
Each input channel is electrically isolated to reduce interference and improve signal reliability.
4. Fast Response Performance
Provides fast signal detection for ON/OFF state changes in industrial control systems.
5. Configurable Input Filtering
Allows adjustment of input filtering to reduce noise and improve signal stability.
6. Integrated Diagnostics
Supports built-in diagnostics such as:
- Input status monitoring
- Fault detection
- Signal validation
- Channel diagnostics
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-IM16I/A |
| Product Type | AC Digital Input Module |
| Series | ControlLogix |
| Input Channels | 16 Isolated Inputs |
| Input Voltage Range | 159–265 VAC |
| Frequency Range | 47–63 Hz |
| Input Type | AC Digital Signal |
| Off-state Leakage Current | ≤ 2.5 mA |
| On-state Current Range | 5–13 mA |
| Input Delay Time | 8–12 ms (configurable) |
| Filter Options | 1 ms / 2 ms selectable |
| Isolation Voltage | 250 V continuous / 1350 V test |
| Backplane Current | Approx. 100–150 mA |
| Power Dissipation | Approx. 5.5–6.0 W |
| Wiring Method | Removable Terminal Block |
| Diagnostics | Channel fault monitoring |
| Mounting Type | Chassis mount |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity Range | 5%–95% non-condensing |
| Vibration Resistance | Industrial standard |
| Shock Resistance | High durability design |
| Certifications | CE / UL / CSA |
| Dimensions | 30.0 × 3.8 × 11.1 cm |
| Weight kg（ ） | 0.28 kg |
Product Applications
Industrial Manufacturing
Used for monitoring machine status signals, production line switches, and automation interlocks.
Heavy Equipment Systems
Applied in large machinery control systems for detecting operational status and safety signals.
Power Generation Plants
Used for auxiliary system monitoring, breaker status detection, and control signal acquisition.
Oil and Gas Industry
Monitors valves, equipment status, and safety interlocks in high-voltage environments.
Logistics and Material Handling
Used in conveyor systems, warehouse automation, and sorting equipment.
Water Treatment Facilities
Applied in pump control systems, alarm monitoring, and process signal detection.
Product Advantages
High Voltage Operation Stability
Supports AC input up to 265 VAC, suitable for industrial power environments.
Strong Electrical Isolation
Improves system stability by reducing channel-to-channel interference.
Reliable Industrial Design
Built for continuous operation in harsh industrial environments.
Flexible Signal Filtering
Allows configuration of signal response to reduce noise interference.
Easy Maintenance
Integrated diagnostics reduce troubleshooting time and system downtime.
Modular System Compatibility
Fully compatible with ControlLogix architecture for scalable system design.
Recommended Related Models (Same Series)
| Model | Product Type | Key Feature | Channels | Dimensions | Weight kg（ ） |
|---|---|---|---|---|---|
| 1756-IA16 | AC Input Module | Standard AC signal input | 16 | 30.0 × 3.8 × 11.1 cm | 0.29 kg |
| 1756-IB16 | DC Input Module | Standard DC input signals | 16 | 30.0 × 3.8 × 11.1 cm | 0.30 kg |
| 1756-IB16I | Isolated DC Input Module | High isolation design | 16 | 30.0 × 3.8 × 11.1 cm | 0.40 kg |
| 1756-IM16I | High-speed AC Input Module | Fast 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 | System 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
Install the module in a grounded industrial cabinet with proper ventilation.
Use shielded cables to minimize electromagnetic interference.
Regular inspection of wiring terminals ensures stable long-term operation.
Summary
The 1756-IM16I/A is a high-voltage AC digital input module designed for industrial automation systems requiring reliable and stable signal acquisition.
Its 16-channel isolated structure, strong voltage compatibility, fast response performance, and robust industrial design make it suitable for heavy-duty automation environments.
It is widely used in manufacturing, energy, process control, and infrastructure systems where stable digital signal monitoring is essential for continuous operation.