The 1761-L20BWA-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 applications.
This controller integrates:
- CPU
- Power supply
- Digital I/O
- Analog I/O
- RS-232 communication
into a single compact housing, making it suitable for space-constrained industrial control panels.
The 1761-L20BWA-5A features:
- 12 × 24V DC digital inputs
- 8 relay outputs
- 4 analog inputs
- 1 analog output
- Built-in RS-232 DF1 communication
It is widely used in packaging systems, conveyors, pump control, HVAC systems, material handling equipment, and small automation machinery. The controller has been officially discontinued but remains common in legacy industrial systems.
Technical Specifications (Including Size & Weight)
| Parameter | Specification |
|---|---|
| Model | 1761-L20BWA-5A |
| Series | MicroLogix 1000 |
| Module Type | Compact PLC Controller |
| Power Supply | 120/240V AC |
| Input Voltage Range | 85–264V AC |
| Frequency | 47–63 Hz |
| Power Consumption | 30 VA @ 120V AC / 36 VA @ 240V AC |
| Digital Inputs | 12 × 24V DC |
| Digital Outputs | 8 × Relay Outputs |
| Analog Inputs | 4 |
| Analog Outputs | 1 |
| Analog Input Signal | ±10V DC / ±20 mA |
| Analog Output Signal | 0–10V DC / 4–20 mA |
| Relay Output Voltage | 5–125V DC / 5–264V AC |
| Communication Port | RS-232 |
| Communication Protocol | DF1 |
| Memory | 1 KB EEPROM |
| Instruction Capacity | ~737 instruction words |
| Data Memory | ~437 data words |
| Mounting Type | DIN Rail / Panel Mount |
| Operating Temperature | 0°C to 55°C |
| Isolation Voltage | 1500V AC |
| Inrush Current | 30 A for 8 ms |
| Weight | ~0.26–0.50 kg |
Technical specifications compiled from Rockwell and industrial distributor references.
Physical Dimensions
- Size (H × W × D): 80 × 73 × 200 mm
Equivalent imperial dimensions:
- 7.87 × 2.87 × 3.15 inches
Dimension references verified from distributor and installation documentation.
Key Features
- Compact all-in-one PLC design
- 12 DC inputs and 8 relay outputs
- Built-in analog I/O capability
- Supports both voltage and current analog signals
- RS-232 DF1 communications
- EEPROM non-volatile memory
- DIN rail or panel mounting
- Suitable for compact automation systems
Recommended Related Models
The 1761-L20BWA-5A is commonly associated with:
- 1761-L16BWB MicroLogix 1000
- 1761-L20AWA-5A
- 1761-L32BWA controllers
- 1761-NET-AIC communication converter
- 1761-CBL-PM02 programming cable
- RSLogix 500 programming software
