Allen-Bradley 1763-L16AWA MicroLogix 1100 Controller

The Allen-Bradley 1763-L16AWA, also cataloged as the 1763-L16AWA Programmable Controller, operates as a dedicated hardware component for logic execution and signal processing within MicroLogix 1100 platforms.

Hardware Specifications

Profinet / EtherNet/IP Deterministic Networks

The 1763-L16AWA integrates into industrial networks via an embedded Ethernet port, supporting communication protocols for data exchange and controller monitoring. The controller facilitates I/O density scaling through the integration of standard digital and analog signals, allowing for expansion while maintaining process control. Firmware flash compatibility is supported via the programming interface, permitting updates to internal logic and communication drivers. The controller ensures backplane bus communication velocity is maintained during high-demand scan cycles, providing consistent timing for the 10 digital inputs and 2 analog inputs while managing the individually isolated relay outputs.

Frequently Asked Questions

Q: Can the analog inputs be configured for current (4-20 mA) measurement?

A: No, the two onboard analog inputs on the 1763-L16AWA are hardware-defined for 0-10 VDC voltage signals only. Current inputs would require an external signal conditioner to convert to a voltage range compatible with the input terminals.

Q: Are the relay outputs internally powered?

A: No, the relay outputs are dry contacts. External power (AC or DC, within relay rating limits) must be supplied to the output circuits to actuate the connected field devices.

Field Installation Guidelines

1. Mount the controller on a 35 mm DIN rail or directly to a panel surface using the integrated mounting tabs; ensure sufficient clearance for cooling airflow.
2. Terminate AC power and digital input field wiring to the specified terminal blocks, ensuring that all conductors are securely tightened.
3. Route signal wiring (analog inputs and communication cables) separately from high-voltage AC lines to mitigate inductive noise and electromagnetic interference (EMI).
4. Utilize an external surge suppression device across relay contacts driving inductive loads to prevent contact welding and extend relay cycle life.
5. Verify the isolation of the six relay outputs to ensure compliance with zone separation requirements in the control circuit design.