The 1761-L20BWB-5A MicroLogix 1000 Controller from Rockwell Automation is a compact 20-point programmable logic controller (PLC) designed for small industrial automation and OEM machine control.
It is an all-in-one controller integrating CPU, power supply, I/O, and RS-232 communication in a single unit, commonly used in conveyors, packaging machines, pump systems, HVAC, and small automation panels.
This model is part of the MicroLogix 1000 family and is now discontinued, but still widely used in legacy systems.
Technical Specifications (Including Size & Weight)
| Parameter | Specification |
|---|---|
| Model | 1761-L20BWB-5A |
| Series | MicroLogix 1000 |
| Power Supply | 120/240V AC |
| Input Type | 12 × 24V DC digital inputs |
| Output Type | 8 × relay outputs |
| Analog Inputs | 4 (voltage/current) |
| Analog Output | 1 (0–10V / 4–20mA) |
| Communication | RS-232 (DF1 protocol) |
| Memory | ~1 KB EEPROM |
| Operating Temperature | 0°C to 55°C |
| Isolation Voltage | 1500V AC |
Weight: ~0.50–0.82 kg
Physical Dimensions (长 × 宽 × 高 mm)
- 200 × 80 × 73 mm (L × H × W)
- Or commonly expressed as: 80 × 73 × 200 mm (H × W × D)
Key Features
- Compact all-in-one PLC (CPU + I/O integrated)
- 12 DC inputs + 8 relay outputs
- Built-in analog input/output capability
- RS-232 DF1 communication port
- EEPROM memory for program retention
- DIN rail or panel mounting
- Suitable for small machine automation
Recommended Related Models
- 1761-L16BWB MicroLogix 1000
- 1761-L20BWA-5A (AC input version)
- 1761-L32BWA / L32BWB controllers
- 1761-NET-AIC communication interface
- RSLogix 500 programming software
