Overview
The Allen-Bradley 1745-E154 /B is an expansion unit designed to extend the I/O capabilities of SLC 150 programmable logic controllers. This module adds 20 input terminals and 12 output terminals with PNP current-sourcing transistor outputs, allowing you to scale your control system without replacing the core processor.
Key Features
- PNP current-sourcing transistor outputs for reliable signal expansion
- 20 input terminals with 10–30 V DC sinking capability
- 12 output terminals with PNP transistor sourcing
- CMOS RAM memory with optional EEPROM module support for program backup
- Compact, modular design integrates seamlessly into SLC 150 chassis
Technical Specifications
| Input Voltage Range | 10–30 V DC |
| Input Terminals | 20 |
| Output Terminals | 12 |
| Output Type | PNP Transistor Sourcing |
| Memory Type | CMOS RAM |
| Optional Memory | EEPROM Module |
| Series | SLC 150 |
| Form Factor | Expansion Module |
| Condition | Used |
Typical Applications
The 1745-E154 /B is commonly used in manufacturing environments where SLC 150 systems require additional discrete input and output capacity. Typical applications include:
- Machine tool control and process monitoring
- Assembly line automation and material handling
- Discrete part processing and quality verification
- HVAC and utility control systems
Compatibility & Replacements
The 1745-E154 /B is a direct-fit expansion module for SLC 150 processor units such as the 1745-LP154 and compatible controller chassis. When integrating this expansion unit, verify compatibility with your existing SLC 150 base unit and confirm that your application voltage matches the 10–30 V DC input specification. EEPROM memory modules (such as the 1745-M1) are compatible for program storage and backup if required.
