Allen-Bradley 1771-A1B PLC-5 I/O Rack Chassis
Manufacturer: Allen Bradley
-
Part Number: 1771-A1B(RACK)
Condition：New with Original Package
Product Type: PLC I/O Chassis Rack
-
Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Description
Overview
The Allen-Bradley 1771-A1B is a compact 4-slot I/O chassis designed for the PLC-5 and 1771 I/O platform. It provides the mechanical structure and backplane communication required to operate 1771-series modules.
Engineers commonly use the 1771-A1B in small local I/O systems or distributed Remote I/O (RIO) configurations. The chassis integrates seamlessly with PLC-5 processors and compatible communication adapters.
Although sometimes described as a 5-slot rack, the 1771-A1B provides four usable module slots. One slot position is reserved internally for the power supply connection.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Model | 1771-A1B |
| Series | 1771 I/O |
| Platform | PLC-5 |
| Module Slots | 4 I/O slots |
| Backplane Type | 1771 parallel backplane |
| Backplane Voltage | 5.25 VDC |
| Backplane Current | Up to 16 A (power supply dependent) |
| Power Supply | Requires 1771-P series (P4, P5, P7, etc.) |
| Communication | Local I/O, Remote I/O (RIO), ControlNet via adapter |
| Mounting | Panel mount |
| Cooling | Natural convection |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | −40°C to +85°C |
| Humidity | 5–95% non-condensing |
| Certifications | UL, cUL, CE |
| Weight | 3.0–3.5 kg |
| Lifecycle Status | Discontinued (Legacy support available) |