Overview
The Allen-Bradley 1764-LSP is a MicroLogix 1500 standard processor unit designed for compact industrial automation systems. With integrated 7.6K memory and fast execution time, this processor delivers reliable control for small to medium-scale applications requiring flexible I/O management and multi-protocol communication capabilities.
Key Features
- 7.6K integrated user memory (3.65K program + 4K data, user-configurable)
- Fast 1 ms execution time for 1K-word programs including counters, timers, and math instructions
- Integrated RS-232 communication port supporting DF1, DH-485, Modbus, and ASCII protocols
- Supports up to 512 input/output points for expanded I/O management
- Expandable with external memory modules (1764-MM1, 1764-MM2, 1764-MM3)
- Long-integer data file support (32-bit signed integers) for advanced math and high-speed I/O
Technical Specifications
- Memory: 7.6K user words total
- Program Memory: 3.65K
- Data Memory: 4K (user-configurable)
- Execution Time: ~1 ms per 1K-word program
- I/O Capacity: Up to 512 inputs/outputs (8 local modules or 16 compact expansion modules)
- Communication Port: Integrated RS-232
- Supported Protocols: DF1, DH-485, Modbus, ASCII
- Current Draw @ 5VDC: 300mA
- Heat Dissipation: 1.5W
- Operating Temperature: 0–55°C (32–131°F)
- Enclosure Rating: IP20
- Certifications: C-UL-us (Class 1, Division 2), CE, C-Tick, KCC
Typical Applications
The 1764-LSP is optimized for small machine and process automation, including packaging systems, conveyor control, material handling, and standalone production equipment. Its compact footprint and multi-protocol communication make it ideal for applications requiring connection to HMIs, SCADA systems, and remote terminal units (RTUs) without significant program overhead or complex I/O requirements.
Compatibility & Replacements
Compatible With
- MicroLogix 1500 base units: 1764-24AWA, 1764-24BWA, 1764-28BXB
- DF1 half-duplex communication networks
- DH-485 networks
- Modbus RTU and ASCII slave devices
- Human Machine Interface (HMI) systems via RS-232
- SCADA and Remote Terminal Unit (RTU) systems
- RS-232 programming workstations and engineering software
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 1764-LSP is compatible with MicroLogix 1500 base units as a direct processor swap, but firmware and configuration must match your application requirements.
Works With
- Allen-Bradley MicroLogix 1500 engineering software
- RSLogix Micro programming environment
- Studio 5000 Logix Designer (via gateway/converter)
- DF1 protocol (slave mode half-duplex)
- DH-485 serial networks
- Modbus RTU and ASCII serial networks
- External memory expansion modules: 1764-MM1, 1764-MM2, 1764-MM3 memory modules
