Product Introduction
The Allen-Bradley 1762-L40BWAR is a Programmable Logic Controller (PLC) from the MicroLogix 1200 series. This compact controller delivers reliable control for micro and small automation applications, offering a balanced mix of discrete I/O and flexible communication options.
With twenty standard 24 VDC inputs, four fast 24 VDC inputs, and sixteen relay outputs, the 1762-L40BWAR handles a wide range of sensing and actuation tasks. Its embedded 8-pin mini-DIN serial port supports DF1, DH-485, ASCII, and MODBUS protocols, while a dedicated programming port simplifies setup and online edits.
Key Features & Benefits
-
Dual communication ports: One 8-pin mini-DIN serial port and one programming port operate simultaneously, so you can connect an HMI or SCADA system without disconnecting the programming cable.
-
Versatile input configuration: Twenty standard inputs for general-purpose sensing and four fast inputs for high-speed counting or pulse capture.
-
Robust relay outputs: Sixteen relay outputs rated for 24-125 VDC and 120-240 VAC, capable of switching up to 10 A minimum load current.
-
Wide power range: Operates on 120 to 240 VAC with inrush current handling of 25 A for 8 ms (120 VAC) and 40 A for 4 ms (240 VAC).
-
Compact footprint: Dimensions of 90 mm height (104 mm with DIN latch open), 160 mm width, and 87 mm depth simplify panel layout.
Technical Specifications
| Specification |
Value |
| Manufacturer |
Rockwell Automation |
| Brand |
Allen-Bradley |
| Part Number |
1762-L40BWAR |
| Series |
MicroLogix 1200 |
| Product Type |
Programmable Controller |
| Inputs |
20 standard 24 VDC; 4 fast 24 VDC |
| Outputs |
16 relay |
| Input Circuit Type |
24 VDC sink/source |
| Output Circuit Type |
Relay |
| Relay Contact Rating |
24-125 VDC; 120-240 VAC |
| Load Current |
10 A, minimum |
| Mechanical Cycles |
20,000,000 |
| Power Supply |
24 VDC (input power 120-240 VAC) |
| Power Supply Usage |
82 VA |
| Heat Dissipation |
22 Watts |
| Inrush Current |
25 A/8 ms (120 VAC); 40 A/4 ms (240 VAC) |
| Communication Ports |
1 × 8-pin mini-DIN serial; 1 × programming port |
| Supported Protocols |
DF1, DH-485, ASCII, MODBUS |
| Dimensions (H×W×D) |
90 mm × 160 mm × 87 mm (104 mm with DIN latch open) |
| Shipping Weight |
2.4 lb |
| Ambient Operating Temp |
0 to 55 °C |
| UPC |
10781180463874 |
| UNSPSC |
32151705 |
Industry Applications
The 1762-L40BWAR excels in small machine control, packaging equipment, material handling, and process skids. Its fast inputs suit high-speed counting or shaft encoder feedback, while relay outputs directly drive contactors, solenoids, and small motors.
For example, in a bottle-filling line, the controller manages conveyor start/stop, counts bottles with fast inputs, and activates filling valves via relay outputs. In a pump station, it monitors level switches and controls pump contactors, with MODBUS communication to a remote SCADA system.
Installation & Setup
Mount the 1762-L40BWAR on a standard 35 mm DIN rail. Ensure proper clearance for the DIN latch when open (104 mm height). Connect 120-240 VAC to the power terminals, observing the inrush current ratings. Wire 24 VDC sensors to the input terminals, respecting sink/source polarity. Relay outputs are isolated; verify load voltage and current do not exceed contact ratings.
For programming, use the left-side programming port with the appropriate cable. The front serial port can connect to an HMI or SCADA while programming simultaneously.
Maintenance & Reliability
With 20 million mechanical cycles on relay outputs, the 1762-L40BWAR offers long service life. Periodic inspection of relay contacts and terminal connections is recommended, especially in dusty or high-vibration environments. Operate within the 0 to 55 °C ambient range to ensure optimal performance. The controller's robust design minimizes downtime, making it a cost-effective choice for continuous operations.
Selection Guide
Before purchasing, verify your I/O count, voltage compatibility, and communication requirements. The 1762-L40BWAR suits applications needing 24 inputs and 16 relay outputs. For projects requiring analog I/O or Ethernet, consider other MicroLogix 1200 variants. PLC Source PRO offers this genuine Allen-Bradley 1762-L40BWAR with reliable availability and support.