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Bongshin BS-750 Operational Manual

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Summary of Contents for Bongshin BS-750

  • Page 3 Before using BS-750, It is recommended that you read this manual carefully so you may use this device to its full potential. ■ Place the indicator on a flat and stable surface.
  • Page 4 ■ Appropriate for weight and measurement system. ■ Easy operation and various options. ■ Simple full digital calibration. ■ Watchdog circuitry (system restoration) ■ Weight Back-up (power on actual weight) ■ Various specification of weight conversion speed. (Digital Filter Function) ■...
  • Page 5 DC 5V, up to 4 x 350ohm load cells 0.3 μV/D Within 0.01% F.S. 0㎷ ~ 20㎷ Max. 20㎷ Min. 5㎷ Zero drift : ±0.2 μV/℃ RTI max. Span drift : 20ppm/℃ max. ±0.3 μV p.p or less 10 ㏁ (Min.) Sigma-Delta system Approximately 200,000 counts 1/30,000 (Max.)
  • Page 6 AC 230V, 50/60Hz (DC9V, 1000mA Adaptor) 10 W 10 year -10℃~+40℃ (+14℉ ~ +104℉ ) 85% Rh Max. 175(W) x 53(D) x 160(H) 1.0 kg Serial Interface : RS-232C – Serial Interface : RS-422/485...
  • Page 8 : ON when the current weight is 0 kg. : ON when the weight is stable. : ON when the current weight is NET weight. : ON when the tare weight is stored. : Lamp is on when moving object is weighed. Available keys instead of numeric keys.
  • Page 9 Returns the display to 0 Use container in weighing. Current weight is memorized as tare weight. If you press TARE key in unload condition, Tare setting is released automatically. When you already know the tare weight, press key tare and input tare weight with arrow keys and memorize it by pressing ON/OFF(ENTER) key.
  • Page 10 PRINT key → ■ Set in F23 : 1 → ■ Set in F23 : 2 ■ → By pressing “PRINT” key more than 3 seconds. ■ → ■ Set in F24 :1 Print both the present weighing value and total weighing value. ■...
  • Page 11 ■ : cable gland for load cell Pin no. SIGNAL Shield SHIELD Load cell Input Voltage (-) EXC- (white) Load cell output (-) SIG- (blue) Load cell output (+) SIG+ (green) Load cell Input Voltage (+) EXC+ (red) EXC- SIG+ SIG- EXC+ ■...
  • Page 12 ▶ ■ : CALIBRATION mode SW 1 ON : Shift to calibration mode. Turn sw1 off after calibration, It returns to weighing mode. ■ : SIMURATION CALIBRATION mode SW 2 ON : Shift to simulation calibration mode. Turn sw2 off after calibration, It returns to weighing mode.
  • Page 13 Turn on the power while CAL switch 1 on the rear panel of the indicator and CAL mode starts. Increase the first place set value to1. Move to the left by 1 place of the set value. Move into next menu. CAL 1 : Maximum Capacity Set CAL 2 : Minimum Division Set CAL 3 : Setting Weight in span calibration...
  • Page 14 - Function : Range → 1 ~ 99,999kg Display Description ▲▼ : Increase CAL 1 condition. ◀▶ : Shift of digit 100 kg “ON/OFF” key : 10000kg Store and move into next menu ☞ REF 1. The maximum capacity means the maximum weight that scale can measure.
  • Page 15 - Function : Range → 1~ 99,999kg Display Description ▲▼ : Increase CAL 3 “ON/OFF” key : ◀▶ : Shift of digit 100 kg “ON/OFF” key : 10000kg Store and move into Setting Weight next menu ☞ REF 1. The weight shall be within the range of 10%~100% of maximum weight. ☞...
  • Page 16 - Function : Display Description CAL 5 condition. “ON/OFF” key : Load the weight which was set in Span calibration CAL3 and press “ON/OFF” key. Under span calibration and move into next menu Span calibration is completed. Turn sw1 off. (Save & exit CAL mode) ☞...
  • Page 17 Turn on the power while CAL switch 2 on the rear panel of the indicator and CAL mode starts. Increase the first place set value to1. Move to the left by 1 place of the set value. Move into next menu. Sim 1 : Maximum Capacity Set Sim 2 : Minimum Division Set Sim 3 : Rated Output Set...
  • Page 18 - Function : Range → 1 ~ 99,999kg Display Description ▲▼ : Increase Sim 1 condition. ◀▶ : Shift of digit 100 kg “ON/OFF” key : 10000kg Store and move into next menu ☞ REF 1. The maximum capacity means the maximum weight that scale can measure.
  • Page 19 - Function : Range → 1mV/V ~ 3mV/V Display Description ▲▼ : Increase Sim 3 condition. ◀▶ : Shift of digit 1mV/V “ON/OFF” key : 2mV/V Store move into next menu - Function : 사용 키 FND 화면 설 명 “ON/OFF”...
  • Page 20 By pressing “PRINT” key more than 3 seconds. At this time, “ ” message is displayed on FND screen after “ ” message. ○ “ ” : Call the function which you want to convert. ○ Input function no. to convert with arrow keys and press ON/OFF key. ○...
  • Page 21 ▶ F01 Decimal Point Adjustment F02 Weighing Unit Change F03 Display Update Rate F04 Digital Filter F05 Motion Detection Condition F06 Automatic ZERO Tracking Compensation F07 Weight Backup F08 Set ZERO Range F09 ZERO & TARE Keys Availability F10 Set Hold Type F22 Device ID F23 Designation of “PRINT”...
  • Page 22 ▶ No decimal point 0.00 0.000 gram kilogram pound 10 Times/sec 5 Times/sec 1 : Less vibration Adjust value according to the condition 9 : Much vibration how many times converted digital value read display. No motion Detection Condition 1 : Less vibration weight change within...
  • Page 23 None automatic zero 1 : 0.5 digit Auto-zero tracking will 1 digit automatically bring 3 : 1.5 digit display back to “0” when there are small deviations.. 9 : 4.5 digit Weight back-up is OFF (Power on zero) Weight back-up is ON (Display setting weight) ☞...
  • Page 24 00 : Device ID “0” It is used the no. of indicator when system is 99 : Device ID “99” connected. “ ” Not used Print key Hold key “ ” ON/OFF of display Total Print key ▶ Connection with computer and sub-display(BLD-236/425) 600 bps (bit per second) 1200 bps 2400 bps...
  • Page 25 No data output Stream mode Transmit only in stable condition Transmit when data is required → Request signal : device ID(F22 : Device ID) → In case F22 : 1, send hex value 01H in computer Printer Remote Display (BLD-235/236/425) 600 bps 1200 bps 2400 bps...
  • Page 26 Manual print Automatic print ☞ REF. If automatic print is set, printing is done without pressing PRINT key. Printing Format 0 Printing Format 1 Printing Format 2 DATE, TIME DATE, TIME SERIAL, NET WEIGHT SERIAL, NET WEIGHT 2002. 7. 22 12 : 30 2002.
  • Page 27 DATE, TIME G. WEIGHT, TARE WEIGHT, NET WEIGHT 2002. 7. 22 12 : 30 GROSS : 100.0 kg TARE 0.0 kg 100.0 kg 2002. 7. 22 12 : 32 GROSS : 100.4 kg TARE 0.0 kg 100.4 kg 2002. 7. 22 12 : 35 GROSS : 100.2 kg...
  • Page 28 Display Meaning ▲▼ : Increase 0 2 . 0 5 . 1 8 MAY. 18th, 2002 ◀▶ : Shift of digit “ON/OFF” key : Store and move into next menu Display Meaning ▲▼ : Increase 1 3 . 3 0 . 50 PM 1 : 30 : 50 ◀▶...
  • Page 29 2 Transmit Data 3 Receive Data 7 Signal Ground 4 Request To Send RS-232C port of BS-750 5 Clear To Send 6 Data Set Ready 8 Carrier Detect 20 Data Terminal Ready 25pin port(Female) Serial port of Computer 3 Transmit Data...
  • Page 30 ■ Data Format ( 22 byte) DATA (8byte) CR LF SPACEE UNIT Device ID ① Header 1 - US : WEIGHT UNSTABLE - ST : WEIGHT STABLE - OL : OVER LOAD ② Header 2 - GS : GROSS WEIGHT MODE - NT : NET WEIGHT MODE ③...
  • Page 31 ⑥ Unit - g : Unit of gram - kｇ : Unit of kilogram t : Unit of ton - lb : Unit of pound ■ Basic Program 10 OPEN "COM1:9600,N,8,1” As #1 20 IF LOC(1) = 0 THEN 60 30 A$ = INPUT$(1,1) 40 PRINT A$ ;...
  • Page 32 int in, out, status, DONE = FALSE; bioscom(0, SETTINGS, COM1); cprintf(“…BIOSCOM [ESC] to exit …￦n”); while (!DONE) status = bioscom(3, 0, COM1); if (status & DATA_READY) if ((out = bioscom(2, 0, COM1) & 0×7F) != 0) putch(out); if (kbhit()) if ((in = getch()) == ‘￦×1B’) DONE = TRUE;...
  • Page 33 - Recommended distance is under 1.2 km. - Both end side of a wire must be connected by the termination of 300Ω. Receive Data (+) Receive Data (-) Serial port of Computer RS-422 port of BS-750 ▶ : Same as RS-232C ▶ : Same as RS-232C...

  • Page 34: Troubleshooting

    ☞ Reason Failure in load cell connection or error in A/D conversion part. ☞ Trouble shooting Check the load cell connector so that you may see if the polarity of signal is reversed. If the load cell output is too small ※...
  • Page 35 ☞ Trouble shooting Do not load the item exceeds the maximum tolerance. If the load cell is damaged, the load cell should be replaced. ☞ Reason Current weight deviates from zero range. ☞ Trouble shooting Press the ZERO key within 10% of the maximum capacity. (Function : F11 - x) ☞...
  • Page 36 ※ When adding a resistor , use a metal film resistor in the range 50 to 500KΩ with a good temperature coefficient. Use as large a resistance value as possible in the range in which zero adjustment is possible. If an error still occurs when the above method is used, check whether the load cell is defective or incorrectly connected.