Allen Bradley 1756-IA16 ControlLogix 120V AC Input Module
Allen Bradley 1756-IA16 ControlLogix 120V AC Input Module
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Brand:Allen Bradley PLC Item No.:Allen Bradley 1756-IA16 Product Origin:USA Product Dimensions:13.3 × 14.5 × 5.1 cm Product Weight:0.56 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Allen-Bradley 1756-IA16 is a ControlLogix digital AC input module designed for reliable signal acquisition from industrial field devices operating at 120V AC.
Engineered for the Allen-Bradley ControlLogix platform, this module translates real-world electrical signals—such as pushbuttons, limit switches, and relay contacts—into precise digital data for PLC processing. It is widely used in industrial automation systems where stable, noise-resistant input detection is essential for continuous production environments.
With its rugged design and consistent performance, the 1756-IA16 is a dependable choice for engineers building scalable and fault-tolerant control systems.
Technical Specifications
Category
Specification
Product Type
Digital AC Input Module
Series
ControlLogix 1756
Input Channels
16 points (2 groups of 8)
Input Voltage
120V AC nominal
Operating Range
74–132V AC, 50/60 Hz
Input Current (On-State)
5–13 mA
Backplane Power
~0.58 W
Backplane Current
~100 mA @ 5.1V DC
Input Delay
8–10 ms hardware + filter selectable
Isolation Voltage
125V continuous (group isolation)
Operating Temperature
0°C to 60°C
Dimensions (H × W × D)
13.3 × 14.5 × 5.1 cm
Weight
~0.56 kg
Recommended Related Models
1756-IB16 DC Input Module (for 24V DC field devices)
1756-OB16 Digital Output Module (output control expansion)
1756-IF8 Analog Input Module (process signal acquisition)
1756-EN2T Ethernet Communication Module (network integration)
1756-L83E ControlLogix CPU Module (controller pairing for high-performance systems)
Popular Allen Bradley Models
1756-IA16 120V AC Input Module
1756-IB16 24V DC Input Module
1756-OB16 Digital Output Module
1756-EN2TR Ethernet Redundant Module
1756-L81E ControlLogix 5580 CPU Module
Applications
The 1756-IA16 is commonly deployed in industrial environments requiring robust AC signal detection:
Factory automation and production lines
Conveyor and material handling systems
Motor control and starter feedback circuits
Packaging machinery input monitoring
Utility and process plant control systems
Safety interlock and status monitoring systems
Its strong electrical isolation and noise immunity make it particularly suitable for harsh industrial electrical environments.
Advantages
Reliable 120V AC signal detection in noisy environments
High-density 16-point input configuration reduces rack space
Strong electrical isolation between input groups
Stable performance with built-in filtering options
Easy integration into ControlLogix chassis architecture
Clear diagnostics and module health indicators
Proven industrial-grade durability for continuous operation
Technical FAQs
1. What is the main function of the 1756-IA16?
It receives and processes 120V AC digital signals from field devices into PLC-readable inputs.
2. How many inputs does it support?
It supports 16 discrete input channels.
3. What voltage does it require?
It is designed for 120V AC nominal signals, with a range of 74–132V AC.
4. Is it suitable for DC signals?
No, it is designed specifically for AC input applications.
5. What is the input grouping structure?
Two groups of 8 input channels each.
6. Does it provide electrical isolation?
Yes, with 125V continuous isolation between input groups.
7. What is the module weight?
Approximately 0.56 kg.
8. What type of devices can it read?
Switches, relays, pushbuttons, and other AC-powered field devices.
9. Does it require special software?
It is configured through Studio 5000 Logix Designer.
10. What industries commonly use it?
Manufacturing, utilities, automotive, and process automation industries.
