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1771-NB4S | Allen-Bradley PLC-5 N-Series 2-Input / 2-Output Analog Current I/O Module
- Regular price
- $10,169.00
- Sale price
- $10,169.00
- Regular price
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Product Description P/N: 1771-NB4S
Description
The Allen-Bradley 1771-NB4S is an N-Series analog I/O module designed for PLC-5 systems requiring precise current signal handling. It provides two current inputs and two current outputs with onboard loop power for input channels. The 1771-NB4S supports BCD or natural binary data formats for flexible integration into industrial control applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLCs/Machine Control |
| Part Number | 1771-NB4S |
| Subcategory | PLC Module/Rack |
| Manufacturer | Rockwell Automation |
| Module Type | N-Series Analog I/O Module |
| Number of Inputs | 2 |
| Input Signal Type | Current |
| Input Range | 4–20 mA (module supplies loop power) |
| Input Resolution | 0.34 µA per bit |
| Number of Outputs | 2 |
| Output Signal Type | Current |
| Output Range | 0–25 mA |
| Output Resolution | 3.20 µA per bit |
| Backplane Current | 1.6 A |
| Data Format | BCD or Natural Binary |
| Typical AC Signal Delay (Off) | 45 ms ±15 ms |
| Typical DC Signal Delay (Off) | 50 ms |
| Wiring Arm | 1771-WH |
| Mounting | Rack Mountable |
Information About 1771-NB4S
The 1771-NB4S is an intelligent analog I/O module used within Allen-Bradley PLC-5 rack-based control architectures. It features a single-slot design with block transfer capability for accurate analog data exchange between field devices and the controller. The module is engineered to interface directly with current-based instrumentation while maintaining electrical isolation and signal integrity. It is commonly deployed in process control, monitoring, and closed-loop control applications where reliable analog input and output performance is required.
Key Features:
- N-Series analog module: Designed for PLC-5 rack-based control systems.
- Dual analog inputs: Supports two 4–20 mA current input channels with loop power.
- Dual analog outputs: Provides two 0–25 mA current output channels.
- Flexible data formatting: Selectable BCD or natural binary data representation.
- High-resolution conversion: Fine signal resolution for accurate process control.
- Block transfer operation: Enables precise and reliable analog data communication.
- Rack-mountable design: Installs directly into 1771 I/O chassis with keyed slots.
The 1771-NB4S delivers the reliability and precision required for PLC-based analog signal processing and control applications.
Description
The Allen-Bradley 1771-NB4S is an N-Series analog I/O module designed for PLC-5 systems requiring precise current signal handling. It provides two current inputs and two current outputs with onboard loop power for input channels. The 1771-NB4S supports BCD or natural binary data formats for flexible integration into industrial control applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLCs/Machine Control |
| Part Number | 1771-NB4S |
| Subcategory | PLC Module/Rack |
| Manufacturer | Rockwell Automation |
| Module Type | N-Series Analog I/O Module |
| Number of Inputs | 2 |
| Input Signal Type | Current |
| Input Range | 4–20 mA (module supplies loop power) |
| Input Resolution | 0.34 µA per bit |
| Number of Outputs | 2 |
| Output Signal Type | Current |
| Output Range | 0–25 mA |
| Output Resolution | 3.20 µA per bit |
| Backplane Current | 1.6 A |
| Data Format | BCD or Natural Binary |
| Typical AC Signal Delay (Off) | 45 ms ±15 ms |
| Typical DC Signal Delay (Off) | 50 ms |
| Wiring Arm | 1771-WH |
| Mounting | Rack Mountable |
Information About 1771-NB4S
The 1771-NB4S is an intelligent analog I/O module used within Allen-Bradley PLC-5 rack-based control architectures. It features a single-slot design with block transfer capability for accurate analog data exchange between field devices and the controller. The module is engineered to interface directly with current-based instrumentation while maintaining electrical isolation and signal integrity. It is commonly deployed in process control, monitoring, and closed-loop control applications where reliable analog input and output performance is required.
Key Features:
- N-Series analog module: Designed for PLC-5 rack-based control systems.
- Dual analog inputs: Supports two 4–20 mA current input channels with loop power.
- Dual analog outputs: Provides two 0–25 mA current output channels.
- Flexible data formatting: Selectable BCD or natural binary data representation.
- High-resolution conversion: Fine signal resolution for accurate process control.
- Block transfer operation: Enables precise and reliable analog data communication.
- Rack-mountable design: Installs directly into 1771 I/O chassis with keyed slots.
The 1771-NB4S delivers the reliability and precision required for PLC-based analog signal processing and control applications.