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The 1756-IV16 is a high-density digital DC input module designed for industrial automation systems requiring reliable signal acquisition from field devices such as switches, sensors, and relays. It belongs to the ControlLogix platform and is widely used in discrete control applications.
This module provides 16 digital input channels, supporting 12/24V DC signals, and is designed for high-speed and stable input detection in industrial environments. It is commonly used in machine control systems, production lines, and safety monitoring applications where accurate digital status reading is required.
The 1756-IV16 is engineered for harsh industrial environments with strong electromagnetic interference, vibration, and temperature variation, ensuring stable performance in continuous operation systems.
| Item | Details |
|---|---|
| Brand | Allen Bradley |
| Product Category | Digital DC Input Module |
| Product Type | ControlLogix Discrete Input Module |
| Platform | ControlLogix |
| Installation Method | Chassis Mounted |
| Main Function | Digital Signal Acquisition |
| Application Field | Industrial Automation |
| Signal Type | DC Digital Input |
The 1756-IV16 belongs to the ControlLogix modular automation platform, designed for high-performance industrial control systems requiring flexibility and scalability.
This platform is widely used in manufacturing and process industries where distributed control and reliable I/O data acquisition are required.
Key capabilities include:
ControlLogix systems are widely used in large-scale industrial automation environments.
Provides 16 digital input points in a single module, improving system density and reducing cabinet space requirements.
Supports 10–30V DC input range, compatible with standard industrial sensors and switches.
Provides fast signal detection with response times as low as 280 microseconds for high-speed applications.
Inputs are divided into groups of 8 channels with electrical isolation to improve stability and safety.
Selectable input filtering allows adjustment of signal delay for noise reduction and stability.
Supports fault detection and status monitoring for improved maintenance efficiency.
| Parameter | Specification |
|---|---|
| Model | 1756-IV16 |
| Product Type | Digital DC Input Module |
| Series | ControlLogix |
| Input Channels | 16 Inputs (2 groups of 8) |
| Input Voltage Range | 10–30V DC |
| Nominal Voltage | 12/24V DC |
| Operating Current | 2–10 mA per channel |
| Off-State Leakage | ≤ 1.5 mA |
| Input Impedance | ~3.2 kΩ |
| Input Delay Time | 0.28 ms – 2 ms + filter |
| Backplane Current (5V) | 110 mA |
| Backplane Current (24V) | 2 mA |
| Power Dissipation | 5.41 W @ 60°C |
| Isolation Voltage | 250 V continuous (group isolation) |
| Input Type | Current sourcing |
| Mounting Method | Chassis mount |
| Wiring Type | Removable Terminal Block |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Response Time | 0.28–19 ms configurable |
| Dimensions | 14.5 × 11.2 × 5.6 cm |
| Weight kg( ) | 0.09 kg |
Used for monitoring machine status signals such as limit switches and proximity sensors.
Applied in detecting product movement, position sensors, and system interlocks.
Used for real-time monitoring of machine inputs and operational states.
Supports safety signal detection for emergency stop and protective circuits.
Used in discrete signal monitoring within process automation environments.
Supports sensor-based control for automated packaging and logistics systems.
16 inputs in a compact module reduce system size and wiring complexity.
Suitable for high-speed industrial automation applications.
Group isolation improves system safety and reduces noise interference.
Allows tuning of response time based on application requirements.
Built for continuous operation in harsh industrial environments.
Designed for seamless integration into ControlLogix architecture.
| Model | Product Type | Key Feature | Channels | Dimensions | Weight kg( ) |
|---|---|---|---|---|---|
| 1756-IA16 | AC Input Module | 120V AC inputs | 16 | 14.5 × 11.2 × 5.6 cm | 0.10 kg |
| 1756-IM16I | DC Input Module | Isolated DC inputs | 16 | 14.5 × 11.2 × 5.6 cm | 0.10 kg |
| 1756-IB16 | DC Sink Input | Standard DC input | 16 | 14.5 × 11.2 × 5.6 cm | 0.09 kg |
| 1756-IF16 | Analog Input Module | Analog signal acquisition | 16 | 14.5 × 11.2 × 5.6 cm | 0.48 kg |
| 1756-OW16I | Relay Output Module | Discrete output control | 16 | 14.5 × 11.2 × 5.6 cm | 0.40 kg |
| 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 | Network communication | EtherNet/IP | 14.5 × 11.2 × 5.6 cm | 0.50 kg |
| 1734-AENTR | Remote I/O Adapter | Distributed I/O | 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 control | EtherNet/IP | 35.0 × 21.6 × 18.0 cm | 4.90 kg |
Install the module in a properly grounded ControlLogix chassis with stable ventilation.
Ensure correct wiring polarity for DC input signals to avoid incorrect readings.
Use shielded cables in high-interference environments for improved signal stability.
The 1756-IV16 is a high-density digital DC input module designed for industrial automation systems requiring fast and reliable signal acquisition.
Its 16-channel architecture, wide voltage range, fast response time, and strong isolation make it suitable for demanding discrete control applications.
It is widely used in machine automation, production systems, and industrial process monitoring where stable digital input performance is essential for system reliability.