HI 1756-2WS ControlLogix Weigh Scale Module

 
Dual Scale ControlLogix Weigh Scale Module


Hardy Instruments’ HI 1756-2WS is a single slot, dual scale, weigh scale module that mounts in an Allen-Bradley ControlLogix® local or remote Chassis. It reads weight and diagnostic data from two seperate sets of strain gauge load sensors or load cells and communicates this data over the I/O chassis Backplane to the ControlLogix® Processor. The HI 1756-2WS module reduces installation costs, since no external stand-alone scale instrument with a wired communications link to the PLC is needed.

The HI 1756-2WS conditions and digitizes the weight signal fifty times per second with over eight million counts of resolution over a differential signal range of -2.5 to 17.5mV. It then transmits the selectable Gross, Net and/or Rate-of-Change data to the processor. This high resolution allows the module to tolerate large dead loads and over sizing of the load sensors while retaining a high level of usable resolution.

The module supplies 5 volts of DC excitation to drive up to four 350 ohm load sensors or load cells associated with a single scale (four additional for a second scale). It will support additional load cells with an external power supply.

The HI 1756-WS supports the use of the producer/consumer technology in the ControlLogix® system to transmit data. This type of communications is an intelligent data exchange in the system where the module produces data without having to be polled.

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