AD-4961 Series

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AD-4961 Series
Checkweigher AD-4961 Provides accurate weighing with simple and intuitive operation
PDFBrochure (PDF 2.1MB)
MOVIEAssembly Guide (YouTube)
MOVIEConveyor Belt Replacement (YouTube)
MOVIEGear Box Replacement (YouTube)
MOVIEGear Replacement (YouTube)
MOVIESide Grip Conveyors (YouTube)


Best-in-class precision
With a newly developed digital load cell and an ultra-high speed processing module, high level precision of 0.08g (3σ)*1 has been realized.
With this high accuracy checkweigher, you can minimize the giveaway of materials above the specified weight and contribute to reductions in production costs.
*1 For AD-4961-2KD-2035. Depends on the shape and the condition of the product and installation environment.


7 inch color touch panel
The display utilizes a high visibility touch panel color LCD with user friendly Graphic User Interface (audio guidance support function included).


Image import from USB
Product images can be quickly uploaded to the checkweigher from a USB flash drive, making product identification and upload fast and simple.


Protected from dust and water to IP65 standards. Hygienic design with the entire system washable.


Stores up to 1000 products
Products can be divided into 10 different groups, with up to 100 products able to be recorded within each group.


Lightweight and compact design
With its modular structure, the AD-4961 allows for rapid and simple installation or relocation.


Unique modular design
AD-4961 consists of four units: an infeed conveyor unit, a weighing conveyor unit, a control unit and a base unit, allowing fast and simple assembly.
In the case of system shutdown, you do not need to wait for a service engineer to respond to the issue.
Just simply replace the unresponsive module by yourself, so that you can shorten system downtime and maximize production efficiency.


Checkweigher AD-4961 Unit


Optimization of weighing configuration
By inputting throughput (products per minute) or belt speed (m/min), optimal weighing conditions can be automatically set.
You can weigh products precisely without inputting various settings.

History function

Operational history

The history of configuration changes can be recorded and displayed. Suitable for use in HACCP programs along with the weighing history function.

Users can be registered and their scope of permitted operations controlled according to 4 management levels.
[ Operation ]
[ Supervisor ]
[ Quality Manager ]
[ Administrator ]

By assigning each user to the appropriate level of access, inadvertent operations can be avoided.*2

*2 "Operator" is set as the factory default setting.

Operational history

Weighing history

Weighing results are automatically recorded in a USB flash drive during weighing.
Output data: Date, time, group and product number, weight data and judgments.

USB memory
Approx. 6MB memory size is required for 8 hours operation at the maximum throughput (320pcs/min.)
Approx. 7GB memory size is required for 24hours 365days operation.

Weighing history


Modbus communication
Equipped with Modbus RTU/Modbus TCP as standard.
With Modbus communication, seamless connection can be easily achieved.
Operations such as stopping and starting weighing, collecting data and changing product can all be set from an external device.

 Modbus communication

Various inputs / outputs
Rejector output , alarm output, metal detector input, RS-232C, TCP/IP and USB interface are equipped as standards.
Storing data in a USB flash drive or outputting to a printer are also possible.


Graph printing to a printer
Histogram, X/R control charts and summary reports can be outputted to a PostScript printer via Ethernet.


Data summary
Various summary data such as histograms (frequency including defects), X charts, R charts, total summaries, etc., are available.
You can visually confirm fluctuation of weighing results and adjust your manufacturing machine accordingly.

 Histogram display screen

Histogram, control charts and summary reports

After weighing, press the PDF key on the summary display. A PDF report is outputted to a USB flash drive.
The same reports can be printed out by pressing the PRINT key when a PostScript printer is connected to the checkweigher.

Histogram printing example Histogram printing example Control chart printing example Control chart printing example Summary results printing example Summary results printing example


USB memory function
Weighing history and operation history are stored in a USB flash drive.
You can also output histogram, X/R control charts or summary data to a USB flash drive in PDF format.
A USB flash drive needs to be inserted before weighing.
*Please prepare a USB flash drive.


Model AD-4961-600-1224 AD-4961-2KD-2035 AD-4961-6K-3050
Capacity 600g 500g / 2,000g 6,000g
Resolution 0.01g 0.01g / 0.1g 0.1g
Accuracy(3δ) *1 0.08g 0.08g / 0.18g 1.0g
Max. throughput 400 pcs/min 320 pcs/min 145 pcs/min
Conveyor belt width 120mm 200mm 300mm
Conveyor length Infeed 360mm, Weighing 240mm 350mm 500mm
Transport medium Urethane belt
Conveyor belt speed 15~120m/min 10~80mm/min
Max. product dimensions Length : 22~200mm
Width : 120mm
Length : 30~300mm
Width : 200mm
Length : 80~450mm
Width : 300mm
Weighing sensor Strain gauge load cell
Display 7 inch touch panel color display (WVGA)
Operation method Touch panel (resistive film type), operation buttons
Number of recorded items 1,000 items (10 groups x 100 items)
Communication functions Modbus TCP / Modbus RTU / RS-232C/485 (selectable) / TCP/IP (PostScript printer)
USB (for PostScript printer, USB memory, data storage, image import use) *3
External input Non-voltage contact input 4 points
External output Relay output 8 points
Dust/water resistance specifications IP65
Operation temperature/humidity range -5~40℃ / humidity below 85% (with no condensation)
Power supply *4 Single phase AC100V-240V (+10% / -15%), 50/60Hz 180VA
External dimensions *2 Length : 606mm
Width : 662mm
Height : 713-863mm
Length : 700mm
Width : 660mm
Height : 710-860mm
Length : 1005mm
Width : 736mm
Height : 720-870mm
Weight *2 Approx. 35kg Approx. 50kg
Material Display : ABS resin
Conveyor unit : Aluminum (alumite coating) and PP resin
Control box : Stainless steel
Base unit : Stainless steel
*1 Depends on the shape and the condition of the product and installation environment.
*2 Values for external dimensions and weight are for standard conditions without rejector.
*3 USB memory must be formatted to FAT32.
*4 Please prepare a Φ4-7mm power cable.


AD4961-600-1224 checkweigher with flipper rejector
AD4961-2KD-2035 checkweigher with flipper rejector   AD4961-6K-3050 with optional display stand, tower light and pusher rejector


AD4961-01 Display stand AD4961-02 Tower light AD4961-11 Upper breeze break
AD4961-01Display stand AD4961-02Tower light AD4961-11Upper breeze break
The display is attached on the opposite side from the standard display position, across from the user.
The display is located approx.
310mm above the conveyor belt.
Highly visible three color LED tower light.
Easy configuration with the AD-4961 checkweigher using DO (Digital Output) map setting.
*AD-4961-01 display stand is required to install this option.
*Dust and water resistance level is IP53.
Anti-static breeze break prevents air currents to the weighing conveyor and static electricity to achieve accurate weighing.
Clearance between the conveyor belt and the breeze break is 135mm.
Use together with the lower breeze break is recommended.
Material : PVC anti-static plate
*This option is for AD-4961-2KD-2035.
AD4961-12 Lower breeze break AD4961-13 Cross plate AD4961-14 Product guide
AD4961-12Lower breeze break AD4961-13Cross plate AD4961-14Product guide
Prevents air currents from underneath the system to ensure accurate weighing.
Use together with the upper breeze break is recommended.
Material : Stainless steel
*This option is for AD-4961-2KD-2035.
Eliminates gap between infeed conveyor and weighing conveyor and conveys products smoothly.
Suitable for weighing small products.
Material : Stainless steel
*This option is for AD-4961-2KD-2035.
Installed on both infeed and weighing conveyors.
Adjusts products to be conveyed on the center of both conveyors.
Applicable product width is from 50mm to 100mm.
Material : Stainless steel
*This option is for AD-4961-2KD-2035.
AD4961-11-1224 Anti-static breeze break    
AD4961-11-1224Anti-static breeze break    
Length: 320mm, Width: 263mm
Three stage pass height adjustable:
60mm, 105mm, and 150mm
Material: PVC anti-static plate
*This option is for AD-4961-600-1224

 Rejector for AD-4961-2KD-2035 and AD-4961-600-1224

AD-4984-1246 Air jet rejector
Model AD-4984-1246 AD-4984-2046
Conveyor belt width 120mm 200mm
Conveyor length 460mm
Screening capacity*1 400pcs/min 320pcs/min
Air supply*2 0.5MPa, 2.4NL/time
*1 Depends on the shape and the condition of the product and installation environment.
*2 Please prepare an air compressor with a Φ10mm air tube to be connected to the filter regulator of the rejector.
AD-4984-1246/2046Air jet rejector


Rejector for AD-4961 Series
AD4981-2057 Flipper type rejector AD4982-2035 Conveyor drop rejector
AD-4981-2057Flipper type rejector AD-4982-2035Conveyor drop rejector


Model AD-4981-2057 AD-4982-2035*3
Conveyor belt width 200mm 200mm
Conveyor length 570mm 350mm
Screening capacity*1 120pcs/min 150pcs/min
Air supply*2 0.5MPa, 0.2 NL/time 0.5MPa, 0.3 NL/time

*1 Depends on the shape and the condition of the product and installation environment.
*2 Please prepare an air compressor with a Φ6mm air tube to be connected to the filter regulator of the rejector.
*3 When connecting the rejector (AD-4982-2035) to the AD-4961-600-1224 or AD-4961-6K-3050, base unit (AD-4982-11-79) is required.

Rejector for AD-4961 Series


AD4983-3050 Pusher rejector

AD4983-3050Pusher rejector

Model AD-4983-3050
Conveyor belt width 300mm
Conveyor length 500mm
Screening capacity*1 60pcs/min
Air supply*2 0.5MPa, 2.6 NL/time
*1 Depends on the shape and the condition of the product and installation environment.
*2 Please prepare an air compressor with a Φ8mm air tube to be connected to the filter regulator of the rejector.


Unit supply for AD-4961-2KD-2035
We supply checkweigher modules individually, allowing you to build a weighing system which fits your production lines.
AD-4961-2K-WU Weighing unit AD-4961-2035-MOB Motor base unit AD-4961-2035-WCV Weighing conveyor unit
AD-4961-2K-WUWeighing unit AD-4961-2035-MOBMotor base unit AD-4961-2035-WCVWeighing conveyor unit
High accuracy digital output module.
Stopper mechanism protects the load cell from overload.
Easy connection to the AD-4961-CNT control unit.
Dust and waterproof to IP65.
Motor cable included.
Motor base unit for 200mm width conveyor belt.
Motor unit is pre-installed.
Dust and waterproof to IP65 when used with the AX-KO4223-080 cable.
2 sets are required for the infeed conveyor and the weighing conveyor.
A conveyor unit with balance adjusted pulleys enables accurate weighing.
*Different from the infeed conveyor unit.
AD-4961-DISP Color touch panel display unit AD-4961-CNT Control unit AD-4961-INF Infeed unit
AD-4961-DISPColor touch panel display unit AD-4961-CNTControl unit AD-4961-INFInfeed unit
7 inch color touch panel display with a USB memory port.
Easy connection to the AD-4961-CNT control unit.
Water and dust proof to IP65.
Communication functions:
Modbus TCP / Modbus RTU (RS485) / RS232C / RS485 (selectable) / TCP/IP for PostScript printer / SB (USB memory for storing data, capturing images and connection to a PostScript printer.)
Base functions:
Item registration: 1000 items
Non-voltage inputs: 4 points
Relay outputs: 8 points
Power supply: Single phase AC100-240V
Load cell connection:
Please use the AD-4961-2K-WU
Conveyor height can be adjusted with this unit.
AD-4961-UF Attachment brackets AD-4961-2035-ICV Infeed conveyor unit AD-4961-2035-FP Base unit
AD-4961-UFAttachment brackets AD-4961-2035-ICVInfeed conveyor unit AD-4961-2035-FPBase unit
Attachment brackets to fix the infeed unit and weighing unit.
*2 sets are required for the infeed unit and the weighing unit.
*The pulleys for the infeed conveyor unit are not balance adjusted.
The conveyor belt is different from the one for the weighing conveyor.
Consists of feet and side beams.
2 sets of AD-4961-UF are installed on the base unit.
AD-4961-81-2K Photo sensor with attachment AD-4961-80-2K Attachment for the display unit AX-KO4223-080 Motor cable for the infeed conveyor
AD-4961-81-2KPhoto sensor with attachment AD-4961-80-2KAttachment for the display unit AX-KO4223-080Motor cable for the infeed conveyor
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