The Allen Bradley 1772-LZP is a Mini PLC-2/02 processor module with integrated power supply, designed for early-generation Allen Bradley programmable controller systems. Built for dependable machine control and discrete automation tasks, this processor combines compact architecture, onboard memory handling, and industrial-grade reliability into a single unit.
The 1772-LZP became widely adopted in legacy manufacturing systems due to its stable performance, straightforward programming structure, and long operational lifecycle in harsh industrial environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Catalog Number | 1772-LZP |
| Module Type | Mini PLC Processor Module with Power Supply |
| Product Family | Mini PLC-2/02 |
| Processor Memory | 2K words memory capacity |
| I/O Capacity | Up to 128 I/O points |
| Input Voltage | 120/220V AC switch selectable |
| Input Voltage Range | 97–132V AC / 194–264V AC |
| Frequency | 47–63 Hz |
| Backplane Output Current | 4 A @ 5V DC |
| Programming Modes | RUN / TEST / PROG |
| Diagnostic Indicators | Processor, Memory, RUN LEDs |
| Battery Backup | Integrated lithium memory backup |
| Communication Interface | INTFC socket |
| Mounting Position | Left-most slot in 1771 chassis |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5–95% non-condensing |
| Weight | ~1.46 kg |
| Dimensions (L×W×H) | 305 mm × 254 mm × 127 mm |
Core System Overview
The 1772-LZP functions as the central processing controller for Mini PLC-2 automation systems. It executes ladder logic instructions, processes I/O data, manages memory operations, and coordinates industrial control sequences.
Main system capabilities include:
- Discrete machine control
- Relay-style logic execution
- Industrial process sequencing
- Memory-backed program retention
- Communication with handheld programming terminals
- Integration with 1771 I/O chassis systems
Its integrated power supply design reduces cabinet complexity and simplifies installation in legacy PLC architectures.
Recommended Related Models
| Model | Function |
|---|---|
| 1772-LXP | Mini PLC-2/16 processor |
| 1772-LW | Mini PLC-2/17 processor |
| 1771-A1B | 4-slot I/O chassis |
| 1771-IAD | AC input module |
| 1771-OBD | DC output module |
| 1771-P7 | Power supply module |
Popular Allen Bradley Models
| Model | Function |
|---|---|
| 1785-L40B | PLC-5 processor |
| 1771-A4B | 16-slot chassis |
| 1771-DMC | Communication module |
| 1771-IFE | Analog input module |
| 1771-OFE2 | Analog output module |
| 1771-SN | Remote I/O scanner |
