Purchase now: Hardy HI 1756-WS Weigh Scale Module
Purchase now: Atlantechdrives provides you the HI 1756-WS, an incredibly precise, single-channel weigh scale module manufactured by Hardy Process Solutions exclusively for the Allen-Bradley ControlLogix 1756 platform. As a premier Rockwell Automation Encompass Partner product, this highly specialized module slides directly into any standard ControlLogix chassis and communicates with the main Allen-Bradley processor directly over the high-speed backplane. It completely eliminates the need for external, stand-alone weight transmitters and complex communication bridges. The HI 1756-WS conditions, digitizes, and transmits highly accurate weight signals from industrial strain gauge load cells or weighing scales directly into your PLC logic. It provides 5V DC excitation to drive up to four standard 350-ohm load cells directly without requiring any external power amplification. This makes it the absolute ultimate solution for industrial batching systems, continuous mixing vats, precise dosing hoppers, and automated checkweighing conveyors inside food and beverage, chemical, and pharmaceutical manufacturing facilities.
Technical Specifications of the HI 1756-WS
This module features industry-leading high-resolution analog-to-digital conversion, ensuring that the ControlLogix processor receives usable, extremely precise weight data even when the scale is subjected to massive dead loads (tare weights) associated with heavy steel hoppers.
- Part Number: HI 1756-WS
- Manufacturer: Hardy Process Solutions (Rockwell Encompass Partner)
- Platform: Allen-Bradley ControlLogix 1756 System
- Number of Channels: 1 (Single Scale Configuration)
- Load Cell Excitation: 5V DC (powers up to four 350-ohm load cells)
- Update Rate: 55 updates per second
- Advanced Features: WAVERSAVER®, C2® Electronic Calibration, IT® (Integrated Technician)
Expert Tips: WAVERSAVER® Vibration Filtering
Industrial environments are inherently noisy and physically violently active. Expert Tip: Standard generic weigh modules struggle to provide accurate readings if the storage tank or hopper is physically vibrating due to nearby heavy motors, agitators, or massive HVAC systems. The HI 1756-WS utilizes Hardy’s proprietary WAVERSAVER® technology, which acts as an advanced mechanical noise filter. It digitally identifies and completely ignores physical plant vibration frequencies, allowing the module to transmit a rock-solid, incredibly stable weight reading to the PLC even while massive mechanical agitators are actively spinning inside the mixing tank. Always tune your WAVERSAVER® frequency threshold during the commissioning phase to match the exact resonant frequency of your specific industrial machinery for optimal accuracy.
Installation Advice: C2® Electronic Calibration
Calibrating a massive 50,000-liter storage silo using traditional physical test weights is dangerous, incredibly expensive, and intensely time-consuming. The HI 1756-WS eliminates this nightmare via C2® Electronic Calibration. If you utilize Hardy C2-compatible load cells, the calibration data is permanently etched into a microchip inside the load cell itself at the factory. Upon installation, the HI 1756-WS module automatically reads this digital profile over the wiring and calibrates the entire scale system instantly, safely, and perfectly, completely bypassing the need to hang dangerous physical test weights and saving thousands of dollars in initial commissioning costs.
Frequently Asked Questions (FAQs)
Q: How do I configure the HI 1756-WS inside my Allen-Bradley PLC software?
A: Because Hardy is an Encompass Partner, they provide a free, official Add-On Profile (AOP) for Studio 5000 Logix Designer. Once installed, the module appears natively in your I/O tree, providing fully tagged, intuitive data structures directly in your logic without requiring any complex message blocks.
Q: Can the HI 1756-WS be hot-swapped while the machine is running?
A: Yes. Being a true ControlLogix-compatible module, it fully supports RIUP (Removal and Insertion Under Power). You can safely extract and replace a damaged module without powering down the entire chassis, ensuring continuous factory production.
Do you need more references from this brand? Explore our full catalog of Allen-Bradley here.
For high-precision weighing applications in your Logix system, this Hardy Process Solutions module integrates seamlessly with the 1756-L73 processor.
