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Calibration
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Weight Systems
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PLC Module – Weight Controllers

Hardy PLC Module – Weight ControllersHardy general-purpose or application-specific weight controllers are used in a wide variety of applications such as Batching/Blending, Filling/Dispensing, Check Weighing, Level by Weight, Force measurement, and Rate Monitoring to name a few. They have built-in outputs which allow them to operate as stand-alone controllers or provide weight and flow rate data to the processor. The HI 1756-nDFs contain field proven algorithms and use Add-On-Profiles (AOP) for ease of integration.

HI 1756-nDF For ControlLogix®

Hardy HI 1756-nDF For ControlLogix®

Material Feed Management by Weight for ControlLogix® PLCs

The HI 1756-nDF ControlLogix Dispenser/Filler module is the easy answer to a variety of material feed applications, especially, when speed and accuracy of the feed are paramount to the process. The module batches, fills or dispenses aggregates, granulates, liquids or gases, handling the entire feed process.

The internal set point control is moved closer to the process, by taking it out of the PLC and into the module. This eliminates timing issues created by non-deterministic messaging. To compensate for flow rate variations during the feed, real time target (preact) adjustments can be sent from the PLC, or be calculated by the module. Modules come in single or dual scale configurations. Each scale is fitted with a choice of two integrated solid state DC or AC relays to control fast and slow feed rates.

The HI 1756-nDF will calculate and transmit gross weight, net weight & flow rate outputs simultaneously. Non-linear flows due to varying densities and head pressures are a thing of the past with its predictive algorithm automatically adjusting the system’s setpoint preact function.

These modules can be inserted and removed under power without disruption of any other modules in the system (racks). This makes it possible to replace a failed module while keeping the rest of the system running. Status indicators are provided on the front of the module for fault status. A status block will provide information to the processor for alarming and troubleshooting.

Rockwell Add-On-Profile (AOP)

Quickly and easily configure the HI 1756-nDF for your application through PLC software on a PC and direct back plane connectivity.

  Click here to view data sheet Click here for more information
HI 1746-WS

Hardy HI 1746-WS Weigh Scale Module

HI 1746-WS Weigh Scale Module
The only weight processor for the Allen-Bradley SLC 500 series!

The HI 1746-WS Weigh Scale Module is a self-contained microprocessor-based I/O module with control inputs and outputs.  The HI 1746-WS is designed to be easily plugged into the back plane of an Allen-Bradley SLC 5/02, 5/03, 5/04 or 5/05 programmable controller. The HI 1746-WS supports  a wide variety of process weighing applications such as batching/blending, filling/dispensing, check weighing, force measurement, level by weight and weight rate monitoring.

The module can control two (2) relays via two (2) TTL level outputs and transmits data via the backplane to the SLC.  A 20 bit A-D converter with 980,000 counts of display resolution gives the instrument the ability to tolerate large “dead” loads, oversizing of load cells/sensors and to provide accurate weight measurement and control.

To calibrate the module, simply push the front panel “Button” to effect a C2 calibration (electronic), or you can implement a C2,“Hard” (traditional with test weights) or “Soft (manual load cell data) through the processor.

The HI 1746-WS is IT-enabled, which means the module has a built in IT excitation monitor to detect load cell wiring problems, and with the addition of the optional HI 215IT Junction Box or HI 6010 Summing Box the user can use the other IT functions for fault isolation and troubleshooting of the weighing system. The optional Hardy HI WS100 configuration software makes for easy system setup.

  Click here to view data sheet Click here for more information
 
 
CTH Controls Inc.   CTH Controls Inc.
6-1500 Upper Middle Rd. W. Suite 220
Oakville, ON, Canada, L6M 0C2
Phone: 905-792-6829
Toll Free: 1-888-550-6829
Fax: 905-792-6902
sales@cthcontrols.com
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