The Allen‑Bradley 1762‑L40BWAR is a high‑performance MicroLogix 1200 series programmable logic controller designed for applications requiring fast input response. This controller offers 40 embedded I/O channels, combining 20 standard 24VDC inputs, 4 fast 24VDC inputs, and 16 relay outputs in a single compact unit. Its 120/240V AC power supply ensures global compatibility. The 1762‑L40BWAR distinguishes itself with four dedicated fast inputs, making it ideal for high‑speed counting and positioning tasks. Manufacturing lines, packaging machinery, and motion control systems commonly deploy this capable controller.
The 1762‑L40BWAR delivers exceptional performance across various industrial environments. Its input circuit uses 24 VDC sink/source configuration, providing wiring flexibility. The output circuit uses relay contacts rated for 24‑125VDC and 120‑240VAC . Each relay output handles a load current of 10A minimum and endures up to 20 million mechanical cycles .
Input Details
Twenty standard inputs are located at channels 4 and higher, while four fast inputs occupy channels 0 through 3. The fast inputs respond to high‑speed signals, making them suitable for encoder counting and high‑frequency pulse detection. All inputs support both sink and source wiring configurations. The controller provides sensor power with a maximum of 400 mA at 24VDC . Note that the COM of the sensor supply is internally connected to chassis ground, and the 24VDC sensor power source should not be used to power output circuits.
Power Supply
The controller draws 82 VA of power and accepts an input frequency of 47 to 63 Hertz . Inrush current reaches 25A for 8 ms at 120V AC and 40A for 4 ms at 240V AC . Heat dissipation is 22 Watts , requiring adequate ventilation within the enclosure. The power supply output provides 600 mA at 5VDC and 500 mA at 24VDC for powering expansion modules.
The 1762‑L40BWAR includes two 8‑pin mini‑DIN serial ports . The front panel port serves as the primary communication interface for connection to programming workstations, HMIs, and SCADA systems. The left‑side port functions as a dedicated programming port for online edits, testing, and program downloads. Both ports operate simultaneously, which prevents the need to disconnect existing primary connections when establishing programming communication.
Both ports support DF1 , DH‑485 , ASCII , and Modbus protocols (master and slave modes). Modbus support enables direct integration with power meters, smart relays, and switches without additional converters. ASCII protocol facilitates interfacing with barcode scanners and serial printers commonly found in production environments. The ports use the standard 8‑pin mini‑DIN circular interface, compatible with Allen‑Bradley 1761‑CBL‑PM02 cables or custom alternatives.
The 1762‑L40BWAR measures 90 mm in height (104 mm with DIN latch open), 160 mm in width , and 87 mm in depth . It operates within an ambient temperature range of 0 to 55 degrees Celsius . Storage temperature ranges from ‑40 to 85 degrees Celsius . Installation requires an enclosure that provides adequate protection per the installation area. Shipping weight is 2.4 pounds , making handling straightforward.
Agency Certifications
The controller carries several important certifications: UL 508, C‑UL under CSA C22.2 no. 142, Class I Div. 2 Groups A, B, C, D (UL 1604, C‑UL under CSA C22.2 no. 213), and CE/RCM/EAC for all applicable directives. These approvals ensure suitability for use in hazardous locations and international markets.
Proper installation ensures reliable operation and long service life. First, mount the controller on a DIN rail or panel within a suitable enclosure that provides adequate protection. Next, connect the AC power supply to the designated terminals, observing proper grounding practices. Then, wire input devices such as push buttons, limit switches, proximity sensors, and high‑speed encoders to the appropriate input terminals. Connect output loads such as contactors, solenoids, and indicator lights to the relay output terminals.
Furthermore, pay close attention to the current per group common rating of 8 Amps . Exceeding this limit may damage the 1762‑L40BWAR or connected equipment. Therefore, distribute loads evenly across output groups. Additionally, use proper fusing or circuit protection for each output circuit. Remember that the 24VDC sensor power source is intended for input devices only and must not drive output circuits. Finally, connect programming and communication cables to the appropriate 8‑pin mini‑DIN ports and configure protocol settings in your software.
The shipment includes the following items:
One Allen‑Bradley 1762‑L40BWAR MicroLogix 1200 controller
One 8‑pin mini‑DIN communication cable (length may vary)
Removable terminal blocks for I/O connections
DIN rail mounting clips
Product documentation and quick start guide
All components ship in original factory packaging. The controller arrives ready for installation and configuration.
We ship all orders via FedEx , UPS , or DHL with tracking numbers provided. Domestic deliveries typically take 2 to 5 business days. International shipments usually arrive within 5 to 10 business days depending on customs clearance. Every package includes proper anti‑static and shock‑absorbent protection. Please inspect the box upon arrival and report any damage immediately.
Q1: What is the difference between the 1762‑L40AWAR and 1762‑L40BWAR?
The 1762‑L40BWAR uses 24VDC inputs with four fast inputs for high‑speed counting, while the 1762‑L40AWAR uses 120V AC inputs. Both controllers have 16 relay outputs and dual serial ports.
Q2: What types of devices can connect to the fast inputs?
The four fast inputs on the 1762‑L40BWAR accept high‑speed signals from encoders, pulse generators, and high‑frequency proximity sensors. They respond to signals up to the MicroLogix 1200's fast input frequency rating.
Q3: What software is required to program the 1762‑L40BWAR?
Rockwell Automation's RSLogix 500 or CCW (Connected Components Workbench) software is used to program the 1762‑L40BWAR . Both support ladder logic programming and online monitoring.
Q4: Can I use the sensor power supply to drive output loads?
No, the 24VDC sensor power source on the 1762‑L40BWAR is designed for input devices only. Output circuits require external power sources appropriate for relay contact ratings.
Q5: Does the controller retain its program during a power loss?
Yes, the 1762‑L40BWAR uses non‑volatile EEPROM memory to retain the user program. No battery backup is required for program retention.
| Brand Name | |
| Model No. | 1762-L40BWAR |
| Product Type | Programmable Controller |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
