• Weighing


AD-4421

High-Speed, High-Precision Weighing Indicator

  • AD-4421 is a weighing indicator/controller for an automatic weighing process system, which helps to boost productivity and quality in filling/dosing applications.

Features

Display & Design


 

Clearly Visible LCD

  • White-segment LCD with:
  • Main Display: 8 digits, 14.5 mm character height
  • Sub Display: 20 digits, 5 mm character height
  • 16-status indicators for real-time status and function display

Compact Panel Mount Design

  • Dimensions: 144 (W) x 72 (H) x 134.7 (D) mm
  • Panel cutout: 138 x 68 mm

High-speed & High-accuracy Weighing


 

High Performance Digital Filter (HPDF)
   Effectively eliminates vibrations for stable and accurate weighing,
   even in harsh environments. Reduces the need for mechanical anti-vibration measures,
   cutting costs and maintenance.

High-Speed Sampling
   1200 times/second sampling rate enables fast and accurate measurements,
   especially when combined with HPDF

Easy HPDF Tuning
   Use the free WinCT4421 software to visually adjust filter strength and response speed.

Advanced Weighing Functions


 

Filling & Dosing Modes
   Four modes for hopper and packer scales: simple and sequential filling/dosing

Checkweighing Mode
   Classifies products by weight using comparator outputs (up to 5 levels)

Automatic Accumulation
   Automatically totals net weights; can exclude over/underweight values

 100-code Memory
   Stores up to 100 sets of comparison groups (for filling and dosing modes)
   and accumulation results

 Supplemental Filling
   Automatically adds small amounts if the target weight is not reached
   in filling and dosing modes

Versatile I/O Interfaces


 

Standard Interfaces
   ・ Control I/O: 6 inputs / 8 outputs (open collector, customizable)
   ・ Serial Output: For A&D printers and remote displays (20 mA current loop)
   ・ RS-485: For PC communication and command input (Modbus-RTU supported)
   ・ USB Type-C: For PC connection and data backup via WinCT4421

 Optional Interfaces
   ・ BCD Output: Outputs weighing data in BCD format
   ・ RS-422/485: Additional communication channel (Modbus-RTU supported)
   ・ RS-232C: For external displays, printers, or PC control
   ・ Analog Output: 4–20 mA / 0–10 V analog signal output
   ・ Modbus-TCP: Easy integration with PLCs and HMIs via Ethernet

Ease of Setup & Maintenance


 

WinCT4421 Software (Free)
   ・ Change, back up, and copy internal settings and Code Memory
   ・ Monitor weighing values and log data to CSV
   ・ Adjust HPDF settings in real time
   ・ USB-powered operation for easy setup

 4-wire / 6-wire Load Cell Switching
   Software-selectable, eliminating the need for external jumpers

 Digital Span Calibration
   Enables calibration without actual weights by inputting a reference voltage

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