F820 is a weighing indicator designed for industrial weighing system.
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.
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.
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.
| Analog section | |
| Excitation voltage |
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 to 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 |
| Status display |
CLAMP, SP3, SP2, SP1, HOLD, COMPL., ZT, ZALM, STAB, TARE, NET, GROSS, 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 |
| External signal | |
| External output (16 points) |
Transistor open collector output. Isolation : photo coupler, Rated voltage : 30V, Maximum current : 120mA |
|---|---|
| External intput(22 points) |
The signal can be outputted by making short-circuit between input and common terminal. Isolation : photo coupler |
| Interface | |
| 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 | AC100 to 240V（＋10％ －15％）［50/60Hz］ |
|---|---|
| Rush current |
2A, 1msec:AC100V average load condition (cold start at room temperature) 4A, 1msec:AC200V average load condition (cold start at room temperature) |
| Power consumption | approx.18W |
| Operating conditions |
Operation temperature range:－10 to 40℃ Storage temperature range:－20 to ＋85℃ Humidity: 85％RH or less (non-condensing) |
| Dimension |
192(W)×96(H)×145(D)mm (Projections excluded) Panel cutout size: 186(W)×92(H)mm |
| Weight | 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 |
| CA4311 | JR-PRC (6-wired)conversion relay cable (4-wired to 6-wired)(for 520A use)1m |
| CN10 | Loadcell connector (JR connector) |
| CN21 | BCD output connector |
| CN22 | 57 series 50p connector for external input/output |
| CN34 | D-Sub 9p connector for RS-232C |
| CN70 | D/A converter connector |
