Product Summary
The Allen-Bradley 1762-L24BWAR is an embedded I/O controller for the MicroLogix 1200 series. This unit operates on 120-240V AC input power. It provides ten 24V DC inputs and four fast inputs. The module also delivers ten relay outputs for versatile control. This controller measures approximately 3.5 x 4.33 x 3.43 inches.
Expert Technical Evaluation & Performance Review
This controller uses a sink/source topology for its input wiring. The sensor supply has a COM internally connected to chassis ground. You must only use this supply for input devices like switches. Never use this supply for external output circuits. This design simplifies wiring for standard field sensors.
Inputs 0 through 3 require a minimum on-state current of 2.5 mA. Their nominal current is 7.3 mA at 24 Volts DC. These inputs operate at a maximum frequency of 20 Hertz. Inputs 4 and above need a minimum of 2 mA. Their nominal current is 8.9 mA at 24 Volts DC. These fast inputs operate from 0 Hz up to 1k Hertz. The off-state voltage range is 0 to 5 Volts DC.
The 1762-L24BWAR features an extra RS-232 communications port. This port acts as a Programmer or HMI interface. It fully supports DH Full-duplex applications efficiently. Note that this port cannot initiate outbound messages. You also cannot change its communication parameters. This provides a stable and predictable connection.
The total current for all connected devices equals the sensor current sum. This helps engineers calculate the overall power budget accurately. The relay outputs can switch up to 24 Volts DC. This makes the controller suitable for various industrial loads. You get dependable performance in a compact footprint.
Step-by-Step User & Installation Guide
First, mount the 1762-L24BWAR securely on a DIN rail. Ensure the enclosure has adequate airflow for cooling. Connect the 120-240V AC input power to the designated terminals. Verify the voltage source is within the specified range. Use a dedicated circuit breaker for protection.
Next, wire your input devices to the ten 24V DC terminals. Connect the four fast inputs to high-speed sensors or encoders. Ensure wiring polarity matches your sink or source configuration. Use the internal sensor supply for these input devices only. Do not connect output circuits to this supply.
Then, connect your load devices to the ten relay output terminals. Ensure your load current does not exceed relay ratings. The controller handles switching for inductive and resistive loads. Wire the external power supply separately for the output circuits. This prevents ground loop issues with the sensor supply.
Finally, configure the RS-232 port for your HMI or programmer. Use a standard serial cable for the connection. Set your software for DH Full-duplex communication. You cannot change the port settings on the controller itself. This setup provides a reliable link for programming.
Logistics & Standard Packaging Details
- One Allen-Bradley MicroLogix 1200 controller unit. This is the exact model 1762-L24BWAR.
- A product information sheet with basic safety guidelines.
- No I/O expansion modules are included in the standard package.
- Express delivery shipping is available for this item.
- We ship via FedEx, UPS, and DHL to meet urgent lead times.
