{"product_id":"1756-ws-ab-allen-bradley-hardy-instruments-1756-ws-weigh-scale-module","title":"1756-WS | AB Allen Bradley | Hardy Instruments 1756-WS Weigh Scale Module","description":"\u003ch3\u003eProduct Summary\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1756-WS\u003c\/strong\u003e is a \u003cstrong\u003eWeigh Scale Module\u003c\/strong\u003e manufactured by Hardy Process Solutions for the Rockwell Automation ControlLogix platform. It is a single-slot, single-channel module that mounts directly into a ControlLogix chassis, reading weight and diagnostic data from strain gauge load cells and transmitting it over the backplane to the ControlLogix processor. The module eliminates the need for external Ethernet switches or routers, reducing installation cost and complexity.\u003c\/p\u003e\n\n\u003ch3\u003eCore Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e 1756-WS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Single-Channel Weigh Scale Module\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlatform:\u003c\/strong\u003e ControlLogix (1756 chassis)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResolution:\u003c\/strong\u003e Over 8,388,608 counts (A\/D converter)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUpdate Rate:\u003c\/strong\u003e 50 times per second\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignal Range:\u003c\/strong\u003e 0 to 15.3 mV differential\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoad Cell Excitation:\u003c\/strong\u003e 5 VDC (supports up to four 350 ohm load cells)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBackplane Current:\u003c\/strong\u003e \u0026lt;1 A at 5 VDC; 0.0125 A at 24 VDC (with 4×350 ohm load cells)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBackplane Power:\u003c\/strong\u003e \u0026lt;5 W at 5 VDC; \u0026lt;0.3 W at 24 VDC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Hardy Process Solutions (for Allen-Bradley \/ Rockwell Automation)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical \u0026amp; Functional Characteristics\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWAVERSAVER®:\u003c\/strong\u003e Eliminates effects of plant vibration as low as 0.25 Hz; five selectable cutoff frequencies (0.25, 0.5, 1.0, 3.5, 7.5 Hz)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eC2® Electronic Calibration:\u003c\/strong\u003e Calibrates without test weights using C2-certified load sensors; also supports traditional hard calibration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eINTEGRATED TECHNICIAN® (IT):\u003c\/strong\u003e Built-in system diagnostics for troubleshooting individual load cell voltages and weights\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommon-Mode Rejection:\u003c\/strong\u003e 110 dB at or below 60 Hz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommon-Mode Voltage Range:\u003c\/strong\u003e 2.5 VDC maximum (with respect to earth ground)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStatus Indicators:\u003c\/strong\u003e Bi-color LEDs for scale data and module status\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSystem Integration \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Platform:\u003c\/strong\u003e Allen-Bradley ControlLogix 1756 chassis\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSoftware:\u003c\/strong\u003e RSLogix 5000 \/ Studio 5000 Logix Designer with Add-On-Profile (AOP) support\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommunication:\u003c\/strong\u003e Producer\/consumer technology over ControlLogix backplane\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHot Swap:\u003c\/strong\u003e Supports removal and insertion under power (RIUP)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRemote Rack Support:\u003c\/strong\u003e Can operate in remote chassis via ControlNet link\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelated Parts:\u003c\/strong\u003e 1756-2WS (dual-channel version), 1756-RTA (Remote Termination Assembly), HI 215IT (Junction Box)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEnvironmental \u0026amp; Operational Limits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0°C to 60°C (32°F to 140°F)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -40°C to +85°C (-40°F to 185°F)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHumidity:\u003c\/strong\u003e 0% to 90% RH, non-condensing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApprovals:\u003c\/strong\u003e CE, UL, CUL (pending)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIndustrial Applications\u003c\/h3\u003e\n\u003cp\u003eWidely deployed in batching, blending, filling\/dispensing, check weighing, force measurement, level-by-weight, and weight rate monitoring applications across food \u0026amp; beverage, pharmaceuticals, chemicals, plastics, and general manufacturing industries.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eWhat is the 1756-WS used for?\u003c\/h4\u003e\n\u003cp\u003eIt is a single-channel weigh scale module for ControlLogix systems, reading weight data from strain gauge load cells and transmitting it directly to the PLC processor over the chassis backplane.\u003c\/p\u003e\n\n\u003ch4\u003eHow many load cells can it support?\u003c\/h4\u003e\n\u003cp\u003eUp to four 350 ohm load cells with the internal 5 VDC excitation. Additional load cells require an external power supply.\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the difference between 1756-WS and 1756-2WS?\u003c\/h4\u003e\n\u003cp\u003eThe 1756-WS is a single-channel module. The \u003cstrong\u003e1756-2WS\u003c\/strong\u003e is a dual-channel module supporting up to eight load cells (four per channel) in a single slot.\u003c\/p\u003e\n\n\u003ch4\u003eHow do I calibrate the module?\u003c\/h4\u003e\n\u003cp\u003eC2 electronic calibration requires C2-certified load sensors and is triggered by pressing \"The Button\" on the module front or via ladder logic command. Traditional hard calibration with certified test weights is also supported.\u003c\/p\u003e\n\n\u003ch4\u003eWhat are the related part numbers?\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1756-WS — Single-channel weigh scale module (this part)\u003c\/li\u003e\n  \u003cli\u003e1756-2WS — Dual-channel weigh scale module\u003c\/li\u003e\n  \u003cli\u003e1756-RTA — Remote Termination Assembly\u003c\/li\u003e\n  \u003cli\u003eHI 215IT — Junction Box with IT diagnostics\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53679396585656,"sku":"1756-WS","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1756-WS_2.png?v=1782895392","url":"https:\/\/www.globalpetroparts.com\/products\/1756-ws-ab-allen-bradley-hardy-instruments-1756-ws-weigh-scale-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}