Rev.1.02

Specifications
Analog section
External signal
Excitation voltage
External output (16 points) Transistor open collector output. Isolation : photo coupler, Rated voltage : 30V, Maximum current : 120mA External intput(24 points) The signal can be outputted by making short-circuit between input and
Isolation : photo coupler common terminal.
5 Vdc±5％ Output current: within 90mA Ratiometric method
(Up to 6 load cells at 350Ω can be connected in parallel.)
Signal input range
−0.5 to 3.0mV/V
Zero adjustment range
−0.2 to 2.0mV/V (automatic adjustment by digital computation)
Gain adjustment range
0.3 ∼ 3.0mV/V (automatic adjustment by digital computation)
Minimum input sensitivity 0.15μV/count Accuracy
Non-linearity：within 0.01％/FS
Zero drift：0.025μV/℃RTI Typ Gain drift：1ppm/℃ Typ
A/D converter
Speed:1200, 300 times/sec. (selectable)
Resolution: 24bit (binary)
Min. display resolution
1/10000
Theoretical calibration
equivalent input calibration (accuracy when theoretical calibration is
performed at ambient: 1/1,000)
Filter
Low-pass filter：
When A/D conversion rate is 1200 times/sec: 6, 8, 10, 12, 16, or 20Hz (selectable)
When A/D conversion rate is 300 times/sec: 1.5, 2, 2.5, 3, 4, 5Hz (selectable)
Moving average filter ： 1 to 512 times
Display section
Display unit
Main display: numerical display (7-digit) with a character height of 18 mm
by fluorescent display tube
Code (blend)：Character height 8mm, numerical display by 7-segment
green LED (2-digit)
Weight display
5-digits (signs: minus sign on the highest numerical digit)
Display frequency
1, 2, 5, 10 and 20 times/sec (selectable)
Scale capacity
5-digit numerical values
Minimum scale division/increment
1 to 50(selectable)
Unit of measurement NONE, g, kg, t, or lb (selectable)
Decimal place
0, 0.0, 0.00, or 0.000 (selectable)
Over scale display
LOAD (A/D converter input over), OFL1; (Net weight > Net over set value) ,
OFL2: (Gross weight >Capacity +9 scale divisions),
OFL3; (Gross weight > Gross over set value)
Center zero
display true zero point or the center of each value
CLAMP, SP3, SP2, SP1, HOLD, COMPL., ZT, ZALM, STAB, TARE, NET, GROSS,
Status display
NZ, D.CHG, HI, GO, LO, HI LIM, LO LIM, LOCK
Setting section
Setting method : Can edited with using membrane switch. Setting can be performed by external
devices as well via USB, RS-232C and RS-485 interface and so on.
Setting value memory : Parameter, calibration and part of other settings are stored on NOV.RAM
(non-volatile memory), and all other settings are stored on F.RAM (another
non-volatile memory).
Setting value protection : Overwrite protection by "LOCK" switch
Setting items :
Upper Limit / Lower Limit / Near Zero / Set Point 1 / Set Point 2 / Compensation / Over / Under / Final /
Comparison Inhibit Time / Judging Time / Complete Output Time / Compensation Feeding Time /
Auto Free Fall Compensation Regulation / Weighing Function 1 / Weighing Function 2 / Tare Setting /
Tare Display / Digital Low Pass Filter / Moving Average Filter / Sample Speed /
Motion Detection (Period-Range) / Zero Tracking (Period) / Zero Tracking (Range) /
Weighing Function 3 / Key Invalid・Lock / Error Output Selection / Password / Bag Clamp Output Time/
Discharging Time / Weighing Start Time / AZ Times / Judging Times / Sequence Mode 1 /
Sequence Mode 2 / Extended Function Selection 1 / Extended Function Selection 2 / I/O Input Check /
I/O Output Check/ BCD Input Check / BCD Output Check / RS-485 Check / Balance Weight Value /
Capacity / Min Scale Division / DZ Regulation Value / Display Selection / Gravitational Acceleration /
Net Over / Gross Over / RS-485 I/F Setting / RS-485 Communication Type / RS-485 ID /
RS-232C I/F Setting / RS-232C Communication Type / D/A Output Mode / D/A Zero Output Weight /
D/A Full Scale Value / BCD Data Update Rate / Zero Calibration / Span Calibration /
Equivalent Calibration / Output Monitor Display / Option Display
Interface
Weighing indicator
・USB: USB interface
・SIF: 2-wire serial interface
・232: RS-232C communication interface (option)
・BCO: BCD parallel data output interface (option)
・DAC: D/A converter interface (option)
・485: RS-485 communication interface (option)
※There is a option board slot only for RS-232C. Another option interface (only one option) can be installed as well.
General performance
Operating voltage
Rush current
Power consumption
Operating conditions
Dimension
Weight
AC100 to 240 V (＋10% −15%) (50/60Hz)
2A, 1msec:AC100V average load condition (cold start at room temperature)
4A, 1msec:AC200V average load condition (cold start at room temperature)
approx.18W
Operation temperature range:−10 to 40℃
Storage temperature range:−20 to ＋85℃
Humidity: 85％RH or less (non-condensing)
192(W)×96(H)×145(D)mm (Projections excluded)
Panel cutout size: 186(W)×92(H)mm
approx. 1.7kg
Attachments
・AC power cable (voltage resistance:125 Vac ) (2m) ・・・・・・・・・・・・・・・・・・・・・・ 1
・Load cell connector (JR connector)・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1
・Connector rubber for load cells・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1
・57 series connector for external input/output ・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1
・Mini screwdriver ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1
・Operation manual ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1
・BCD output connector (when BCO option is installed) ・・・・・・・・・・・・・・・・・・・・ 1
・D/A converter connector (when DAC option is installed) ・・・・・・・・・・・・・・・・・・ 1
・RS-485 connector (when 485 option is installed) ・・・・・・・・・・・・・・・・・・・・・・・・ 1
Optional accessories
CAAC3P-P2：
AC power cable 2m
CAAC3P-CEE7/7-P1.5：AC power cable (voltage resistance: 250 Vac) 1.5m
CN3P-2P：
3P-2P converter plug for AC input cord
CA4131：
(6-wired)cable with JR connector at one end 3m
CA4230：
JR-PRC (6-wired)conversion relay cable 0.3m
JR-PRC (6-wired)conversion relay cable (4-wired to 6-wired)(for 520A use)1m
CA4311：
Loadcell connector (JR connector)
CN10：
BCD output connector
CN21：
57 series 50p connector for external input/output
CN22：
D-Sub 9p connector for RS-232
CN34：
D/A converter connector
CN70：
Compliant to RoHS directive
This product is compliant to RoHS
directive, which restricts the use of
certain hazardous substances in
manufacturer of various electronics.
Unit: mm
External dimensions
Panel cutout size
Panel thickness
1.6～3.2mm
* Please note that the specifications and design described in this catalog are subject
to change without notice due to product improvements.
Unipulse Corporation
International Sales Department
9-11 Nihonbashi Hisamatsucho,
Chuo-ku, Tokyo 103-0005
Tel: +81-3-3639-6121 Fax:
Headquarter:
Technical Center:
Nagoya Sales Office:
Osaka Sales Office:
Hiroshima Sales Office:
F820
9-11 Nihonbashi Hisamatsucho, Chuo-ku, Tokyo 103-0005
1-3 Sengendainishi, Koshigaya, Saitama 343-0041
CK16 Fushimi Bldg 1-24-25 Sakae, Naka-ku, Nagoya 460-0008
Sumitomo Seimei Shin Osaka Kita Bldg 4-1-14 Miyahara, Yodogawa-ku, Osaka 532-0003
Funairi Reiku Bldg 9-20 Funairihonmachi, Hiroshima 730-0843
Rev.1.02 2014 AUG.
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Weighing process can be visualized
and configured in shorter time while
keeping the top-class accuracy.
Visualize the weighing process!
With the special software, system configuration can be
performed while monitoring the process in curve/waveform.
■Visualization of weighing process
Fluctuations of weight can be displayed and monitored in curves.
Since waveform and I/O status can be monitored at the same time, you can find out the cycle time and check weight
fluctuations when SP1, 2, CMP. signal turns ON/OFF.
Set points
Weighing set points are displayed (SP1, SP2…).
Indicated value (readings)
F820 is a weighing indicator designed for industrial weighing system.
Cursors
Readings indicated on F820 controller
is displayed.
F820 has high technical specifications, equipped with various functions like high-precision amplifier with ultra-low drift, high-speed sampling, weighing sequential control functions, control I/O
useful for automated weighing machines, and so on.
Display cursors and select the type of cursors
(X and Y-axis readings are displayed).
Curve display
Start conditions
Fluctuation of readings can be displayed
in curves.
You can set start conditions for drawing curves.
I/O timing chart
With using special PC software, setting of the controller can be performed while monitoring the
process in curve/waveform; thus, the time required for initial setup can be greatly saved.
High-performance filters
to attenuate vibration
Store 100 sets (codes) of settings
Fast and accurate weight measurement can be achieved in
an environment with a lot of vibration. Digital low-pass filter
and moving average filter can be adjusted in fine increment.
High-speed sampling
& high-resolution display
It is equipped with an A/D converter with the sampling rate of
1200 times/sec. and a high-speed digital processor (sampling
speed can be changed to 300 times/sec. as well). Also, high
display resolution of 1/10000 is guaranteed in all input range.
Ultra-low drift
Up to 100 sets of parameter settings including, Final, CMP., Free Fall
Compensation and so on are stored on internal memory. By key control or
sending a signal from external devices, you can switch from one setting to
others.
Timing chart for I/Os is displayed.
■ Enlarged waveform display
■ Filter effect
You can select and zoom a section to check in zoom.
With the enlarged view, you can check if weight readings is stable
enough and if Set Points and the sampling rate are set properly.
Filter settings can be changed, and the effect of filters can be
simulated on PC to check if noise and vibration are effectively
attenuated.
Measurement sequence function
Sequential control is possible without PLC and other external devices. By
setting various parameters and using various timers, you can configure
sophisticated weighing system.
Filter setting value
Enlarged view
Simulation
■Feed and discharge gate control
F820 has sequence control functions useful for direct control of feed or
discharge gate like auto feed adjustment in case the total weight is under the
target weight.
■Twin net weigher mode
With high-precision amplifier, ultra-low drift of 0.1μV/℃ has
been achieved!
Master
Slave
F820
F820
F820 is equipped with functions useful for twin net weigher (bagging
machines) such as "clamp" signal output, alternative discharge and so on.
■ Edit/save settings
Example of application
■ Statistics
Settings of F820 can be edited and saved
on PC (saved in CSV format).
It is convenient to save the settings
for backup and export it to other units.
F820
Status
Setting value
■ Logging
Waveform display to monitor
weight fluctuations over a long
period of time
A maximum of 72 hours data
recording
F820
Feed formula batch measurement
Twin net weigher (bagging)
Cumulative weight is calculated.
Statistic like maximum, minimum,
average (mean) weights are also
calculated and displayed in this mode.
Conditions for capturing waveforms
Codes/readings
Measurement result
Discharge measurement
Read-out
Writing
Statistical data

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