Product Summary
The 1762-L40BWAR MicroLogix 1200 PLC from Allen-Bradley manages micro and small automation tasks with 24 VDC inputs (20 standard + 4 fast) and 16 relay outputs. This controller powers up via 120–240 VAC and supports DF1, DH-485, ASCII, and MODBUS protocols.
Theme A: Product Procurement & Buyer Guide
Procurement teams must match this controller to application voltage and I/O needs. The 1762-L40BWAR requires 100–240 VAC at 47–63 Hz and dissipates 22 Watts. Its inrush current reaches 25 A for 8 ms at 120 VAC and 40 A for 4 ms at 240 VAC.
The module uses 82 VA of power and provides 600 mA at 5 VDC plus 500 mA at 24 VDC for auxiliary loads. You can source sensor power up to 400 mA at 24 VDC. Never use this sensor supply to drive output circuits.
This PLC accepts sink or source wiring on all 24 digital inputs. Channels 0–3 are fast inputs for high-speed counting. Channels 4 and above handle standard 24 VDC signals. The 16 relay outputs switch loads up to 10 A at 24–125 VDC or 120–240 VAC.
Communication happens through two 8-pin mini-DIN ports. The front panel port connects to HMIs or SCADA systems. The side port handles programming and online edits. Both ports work simultaneously for uninterrupted uptime.
Installation requires DIN-rail mounting with dimensions 160 mm wide × 90 mm high × 87 mm deep. The unit weighs 2.4 pounds. Operate the controller between 0 °C and 55 °C; store it from -40 °C to 85 °C.
Theme D: Expert Technical Evaluation & Performance Review
This controller delivers robust performance for discrete and batch control. The 20 million mechanical cycles on relay contacts ensure long service life in high-duty applications.
The input circuit accepts both sink and source 24 VDC signals without rewiring. This flexibility simplifies panel design and reduces inventory. The four fast inputs capture pulses for tachometers or encoder feedback accurately.
Heat dissipation of 22 Watts allows installation in sealed enclosures with minimal thermal stress. The power supply delivers 600 mA at 5 VDC for internal logic and 500 mA at 24 VDC for field devices.
Agency certifications include UL 508 and C-UL under CSA C22.2 No. 142 and 213. The unit carries Class I, Division 2, Groups A, B, C, D ratings for hazardous locations. CE, RCM, and EAC marks cover global compliance.
The COM terminal of the sensor supply connects internally to chassis ground. This design prevents ground loops but requires care when sharing supplies with other devices. Always isolate the 24 VDC sensor power from output circuits.
Logistics & Standard Packaging Details
- One Allen-Bradley 1762-L40BWAR MicroLogix 1200 PLC unit
- Product documentation and wiring reference card
- Mounting hardware for DIN-rail installation
- Express delivery shipping available via FedEx, UPS, and DHL
