Overview
The Allen-Bradley 1761-L10BWA is a compact MicroLogix 1000 programmable logic controller designed for small-scale industrial automation and machine control. This 10-point I/O processor combines digital input/output capability with real-time control in a space-efficient DIN-rail mountable form factor. Though discontinued by the manufacturer, the 1761-L10BWA remains a reliable drop-in solution for legacy system maintenance and retrofit applications where proven performance and industry-standard programming are required.
Key Features
- 10 I/O Points: 6 24VDC inputs and 4 relay outputs plus 1 high-speed input at 6.6 kHz
- Memory Capacity: 1KB EEPROM pre-allocated for 737 instruction words and 437 data words
- Communication: RS-232 8-pin mini DIN port supporting DF1 and MODBUS slave protocol
- Power Efficiency: 24VA at 120VAC and 32VA at 240VAC consumption
- Mounting Flexibility: Compact 4.72 × 2.87 × 3.15 inch form factor mountable on DIN rail or panel
- Status Indication: LED indicators for real-time status, input, and output diagnostics
Technical Specifications
- Discrete Inputs: 6 × 24VDC with 6.6 kHz high-speed input channel
- Relay Outputs: 4 contact outputs, configurable
- Operating Voltage Range: 85–264VAC at 47–63 Hz
- Supply Inrush Current: 30A maximum for 8 milliseconds
- Isolation Voltage: 1500V AC
- Operating Temperature (Horizontal): 0°C to +55°C (+32°F to +131°F)
- Operating Temperature (Vertical): 0°C to +45°C (+32°F to +113°F)
- Storage Temperature: –40°C to +85°C
- Humidity (Operating): 5–95% non-condensing
- Enclosure Rating: IP20
- Vibration (Operating): 5 Hz to 2 kHz, 0.381 mm peak-to-peak / 2.5g panel mounted
- Shock (Operating): 10g peak acceleration (7.5g DIN rail mounted)
- 24V DC Sensor Supply: 200 mA maximum at 200 µF capacitance
Typical Applications
The 1761-L10BWA is well-suited for:
- Small machine automation and process control
- Discrete manufacturing equipment control
- Simple sequencing and logic control
- Remote equipment monitoring and data collection
- Legacy system repairs and maintenance
- Proof-of-concept prototyping in light industrial environments
Compatibility & Replacements
The 1761-L10BWA is an entry-level MicroLogix controller similar to the 1761-L10BBB, with the same number of inputs but different power supply requirements. The 1761-L10BWA has been discontinued by the manufacturer, but modern alternatives within the Rockwell MicroLogix family include the 1761-L16BWA and 1762-L24BWA for expanded I/O capability. When used surplus, verify firmware revision compatibility with your programming environment and confirm the controller meets all certification and safety requirements for your specific application before deployment in production systems.
