PLC-5 16-Point 10–30 VDC Digital Input Module | Allen-Bradley 1771-IBN/B
Manufacturer: Allen Bradley
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Part Number: 1771-IBN
Condition：New with Original Package
Product Type: PLC-5 DC Digital Input Module
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Description
The Allen-Bradley 1771-IBN/B is a 16-point DC digital input module designed for the PLC-5 / 1771 I/O platform. It supports 10–30 VDC high-true (sinking) input signals and is typically used with 24 VDC field devices in industrial control systems.
This module interfaces sourcing field devices such as proximity sensors, pushbuttons, limit switches, and solid-state outputs. Each input channel is optically isolated from the backplane to enhance noise immunity and protect the PLC processor from field-side disturbances.
The 1771-IBN/B installs in any standard 1771 I/O chassis and communicates with PLC-5 processors via the 1771 backplane architecture. Revision “/B” indicates a hardware series update with equivalent electrical characteristics to earlier revisions.
This model is discontinued but remains widely deployed in legacy PLC-5 installations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Model | 1771-IBN/B |
| Product Type | 16-Point DC Digital Input Module |
| Platform | PLC-5 / 1771 I/O |
| Number of Inputs | 16 (grouped in two isolated banks of 8) |
| Input Voltage Range | 10–30 VDC |
| Nominal Voltage | 24 VDC |
| Input Type | High-true, sinking |
| Input Current | Approx. 7 mA at 24 VDC |
| ON-State Voltage | ≥ 10 VDC typical |
| OFF-State Voltage | ≤ 5 VDC typical |
| Input Delay | 10 ms typical |
| Isolation | Optical isolation between field inputs and backplane |
| Backplane Current Draw | 250 mA at 5 VDC |
| Indicators | 16 front-panel LEDs (one per input) |
| Wiring Arm | Requires 1771-WN or compatible wiring arm |
| Compatible Chassis | 1771-A1B, A2B, A3B, A4B, AF, AF1 |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | –40°C to +85°C |
| Relative Humidity | 5–95% non-condensing |
| Dimensions | Standard 1771 module form factor |
| Weight | 0.5–0.6 kg |
| Certifications | UL, cUL, CE |
| Lifecycle Status | Discontinued (Legacy Support) |