Your cart is empty.

Welcome to the new website for Hardy Process Solutions.

Click here to share your feedback
HI1756-FC - Feeder/Control Module

HI1756-FC - Feeder/Control Module

Used in new applications or to retrofit volumetric feeders, the HI 1756-FC feeder control module mounts directly into your ControlLogix® chassis and controls many standard feeding devices as well as your proprietary designs.

Complete Your System

Or call 858.278.2900 for assistance

Used in new applications or to retrofit volumetric feeders, the HI 1756-FC feeder control module mounts directly into your ControlLogix® chassis and controls many standard feeding devices as well as your proprietary designs.

Worry-Free Operation

The HI 1756-FC feeder control module will watch your process and notify you of problems. Prompts on your system’s HMI display and PLC alarm relay outputs occur with tolerance errors and other failures.

Multiple Feeder Control

The HI 1756-FC is a powerful building block when it comes to multiple feeder systems. It can be secondary to other process inputs through the ControlLogix® processor.

Automatic Rate and Weight Calibration

A five-point auto rate calibration automatically allows the module to calibrate itself to the characteristics of the feeder and the material being fed. This allows for a higher feed accuracy over a broader range of feed rates.

Rockwell Integrated Architecture Builder (IAB)

Spec out and design your system for optimal productivity, increasing speed and simplifying integration with the click of a mouse.

Download Rockwell Automation Integrated Architecture Builder

Rockwell ControlLogix Add-on-Profile (AOP)

Quickly and easily configure the HI 1756-FC for your application through PLC software on a PC.

Download HI 1756-FC AOP files

Sample Ladder Logic Code

Hardy provides sample ladder logic building blocks of code that can easily be inserted into existing code to quickly program the feeder system application.

Visit our Case Studies or Application Notes on feeder control to learn more.

Hardy’s process weighing solutions are easy to install, configure, commission, and operate. They are easy to maintain and save you time, money, raw materials, and/or finished product.


  • Provided from the backplane of the rack
  • +5Vdc
  • +24Vdc

Backplane Current

  • < 1 Amp @ 5Vdc 5W
  • < 0.0125 Amp 0.3W @ 24Vdc with four 350 ohm L.C.


  • Keeps track of the amount of ingredient dispensed

Time Units

  • Seconds, minutes, and hours

Units of Measure

  • lb, oz, ton, kg, g, mt


  • Batch, continuous


  • Signal: -2.5mV through +17.56mVdc
  • Sense: + 5Vdc
  • C2, Electronic Calibration


  • Excitation 5Vdc to +8.75Vdc

Common Mode Rejection

  • 100dB at or below 60Hz (minimum)


  • Internal, 1:8,388,608

Conversion Rate

  • 100 updates per second


  • 1-255 user selectable in single increments

Vibration Frequency Rejection

  • 0.25 Hz and above in 5 selectable steps, and OFF

I/O Chassis Location

  • Any single I/O chassis slot

Environmental Conditions

  • Operating Temperature: 0 to 60°C (32 to 140°F)
  • Storage Temperature: -40 to 85°C (-40 to 185°F)

Relative Humidity

  • 5 to 95% (non-condensing)

Weighing Modes

  • Net, Gross

Calibration Techniques

  • Electronic (C2)
  • Traditional (test weights)

Automatic Rate Calibration

  • Five-point


  • 1.1 lb (0.5kg)


  • "OK", Module Status, LED
  • "Scale 1”, Functional Data, LED


  • UL and CE
  • RoHS3 and REACH


  • Two-year warranty against defects in workmanship

All specifications are subject to change without notice. Please contact the Hardy factory or visit our website for the latest specifications.

Remote Terminal Option

Model # - HI1756-FC copy
Or call 858.278.2900 for assistance

The Hardy Process Toolbox is a set of productivity tools that support industrial weighing functions. Each tool saves time, increases accuracy, improves efficiency, or reduces risk in process weighing applications, including WAVERSAVER® to eliminate vibration, C2® electronic calibration, and Integrated Technician® to name just a few.

The HI 1756-FC features the following Toolbox technologies:

WAVERSAVER® Vibration Eliminator

WAVERSAVER® Vibration Eliminator

Hardy's WAVERSAVER core technology eliminates the effects that surrounding vibration has on the scale weight signal, providing only true data for fast, accurate weight reading.

C2® (or eCAL) Electronic Calibration

The Hardy C2®  (or eCAL as it is known in China) core feature provides quick and easy electronic calibration of a weighing system without the need for heavy test weights.


Hardy's INTEGRATED TECHNICIAN (IT) core feature helps you troubleshoot your weighing system and diagnose problems from the front of the instrument or via the PLC. These tests display system weights, voltages, and pass/fail displays to help isolate a problem to the instrument, cabling, or sensors, helping to reduce maintenance costs.


FEED-MASTER is a set of software controls designed to control volumetric and gravimetric feeders.