Buy now: Allen-Bradley 1762-L40BWA MicroLogix 1200 40-Point PLC
Atlantechdrives provides you the 1762-L40BWA, a robust and high-density programmable logic controller designed for larger standalone machines. As a key part of the MicroLogix 1200 series, this model provides 40 built-in I/O points and is powered by standard 120/240V AC, eliminating the need for bulky external power supplies in most industrial control cabinets.
- Input Power: 120/240V AC
- Total I/O: 40 Points
- Inputs: 24 24V DC Inputs (Sinking/Sourcing)
- Outputs: 16 Individually Isolated Relay Outputs
- Expansion: Supports up to 6 1762 expansion modules
- Communication: Dual RS-232 (using port splitters) compatible
Technical Superiority: High-Density Relay Control
The 1762-L40BWA is engineered for applications that require a high concentration of discrete control points. With 24 digital inputs and 16 relay outputs in a single unit, it is capable of managing entire conveyor systems, multi-stage pump stations, or complex packaging equipment. The inputs are 24V DC nominal but are designed with high noise immunity to withstand the electrical interference common in heavy industrial sites. The 16 relay outputs are a major advantage, providing the ability to switch AC and DC loads up to 2.0A per point. This eliminates the cost and space required for intermediate relays in many designs. The controller also features a 6KB memory and a high-speed logic engine that provides deterministic execution of your RSLogix 500 routines.
Installation Advice: Wiring for High Point Count
Because the 1762-L40BWA has 40 points, cable management within the terminal housing is a priority. We recommend using 18-20 AWG wire with thin-walled insulation to ensure the wiring bundle does not put pressure on the terminal block cover. Always use the internal 24V DC sensor power supply provided by the controller (up to 400mA) to power your field sensors, but ensure the total draw does not exceed this limit. For the AC power input, use at least 14 AWG wire and install a dedicated 10A fuse. For the relay outputs, it is essential to install RC snubbers for AC inductive loads to prevent contact arcing, which is the leading cause of premature PLC failure in these fixed-point models.
Maintenance and Lifecycle Optimization
The 1762-L40BWA is a maintenance-friendly controller thanks to its non-volatile memory. However, for systems that rely on time-stamped data or specific scheduling, we recommend a yearly check of the real-time clock. If the time is drifting, it may be time to replace the optional backup battery. Periodic inspection of the terminal screws for tightness is mandatory, particularly in environments with significant vibration. If the module reports a «Major Fault,» use the 1761-CBL-PM02 cable to connect and clear the fault log. Sourcing your 1762-L40BWA from Atlantechdrives ensures you receive an authentic, factory-tested unit ready to maintain your production uptime for years to come.
FAQs
Q: Can I use 120V AC for the inputs on the 1762-L40BWA?
A: No, despite the AC power supply, the inputs are strictly 24V DC. For AC inputs, look for a 1761 series or specialized expansion modules.
Q: What is the maximum number of expansion modules supported?
A: The 1762-L40BWA supports up to 6 additional 1762 expansion modules, though the total power budget must be calculated.
Do you need more references from this brand? Explore our full catalog of Allen-Bradley here.
