Allen-Bradley 1756-2WS ControlLogix Dual Weigh Scale Module

Product Overview

The Allen-Bradley 1756-2WS serves as a high-precision interface for industrial load cells and strain gauges within the ControlLogix platform. This dual-channel weigh scale module enables the processor to read and process weight data directly from two independent scales without requiring external signal conditioners or transmitters. We supply this unit as 100% Brand New original factory stock, providing a seamless, backplane-integrated solution for batching, silo level monitoring, and material handling applications.

Technical Specifications

Engineering Advantages

• C2 Electronic Calibration: The 1756-2WS supports C2 electronic calibration, which allows the system to calibrate the scale without using heavy test weights. This feature significantly reduces maintenance time and eliminates the safety risks associated with manual weight handling in large-capacity silos.

• Direct Backplane Integration: By plugging directly into a ControlLogix chassis, the module eliminates the latency and noise interference inherent in serial or 4-20mA analog weight transmitters. The PLC accesses raw weight data at backplane speeds, ensuring immediate response for high-speed filling or batching lines.

• Removal and Insertion Under Power (RIUP): The 1756-2WS supports hot-swapping. Maintenance teams can replace a module while the rest of the chassis remains energized, minimizing downtime in continuous process environments.

• Precision Signal Processing: The module detects minute changes in the millivolt range (-0.3 to 15.3 mV), providing the sensitivity required for high-accuracy industrial scales. It filters out electrical noise to ensure stable weight readings despite the presence of heavy machinery or VFDs.

• Dual-Channel Independence: Two separate channels allow for the simultaneous monitoring of two different vessels or scales. This density reduces the number of slots required in the chassis, lowering the overall hardware footprint and system cost.

FAQs

• Can the 1756-2WS be used in a CompactLogix system?

  While the 1756 series primarily targets ControlLogix chassis, certain communication adapters allow the module to operate in distributed architectures; however, it natively fits the 1756 local or remote I/O chassis.

• Does the module require a separate power supply for the load cells?

  No. The 1756-2WS provides an excitation voltage output between 5V and 8.75V DC to power the connected load cells directly through the terminal block.

• What type of load cells are compatible?

  The module interfaces with standard 4-wire or 6-wire strain-gauge-type load cells. For long cable runs, we recommend 6-wire configurations to allow the module to compensate for voltage drops in the cabling.

• Is this a genuine, factory-sealed unit?

  Yes. We guarantee this 1756-2WS is 100% Brand New. It ships in its original Allen-Bradley factory packaging with intact security seals, ensuring the highest reliability for critical weighing processes.