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DIGITAL WEIGHING INDICATOR 

SI 4500

 

 

- 15 -

4-2-4. Formula to plan the precise weighing system 

This “SI 5010” weighing controller’s Max. input sensitivity is 

0.2

  / Digit

And for precise weighing system, the following formula must be satisfied. 

Caution

 : “Input sensitivity” means Min. output voltage variation of weighing part to change 1digit. So, 

please do not make large input voltage to make reliable weighing system. 

Single Load cell use 

 

E

B

D

ⅹ ⅹ

 

A : Load cell capacity(kg) 

B : Load cell Voltage(mV) 

D : Digit 

E : affirmation Voltage of Load cell 

N : Number of Load cell 

0.2

 

 

Plural Load cells use 

 

E

B

D

ⅹ ⅹ

 

0.2

 

A

N

 

 

Example1.) 

Number of Load cell : 1pcs 

Load cell capacity : 500kg 

Load cell Voltage : 2mV/V 

Digit : 0.05kg 

Affirmation Voltage of Load cell : 5,000mV 

Max. Capacity of Weighing System : 300kg 

Then, estimation result for this weighing system with formula,   

5000

2

0.05

ⅹ ⅹ

 

= 1 

 0.2

 

The calculated value is larger than 0.2

, so this 

system has no problem. 

500 

 

Example2.) 

Number of Load cell : 4pcs 

Load cell capacity : 500kg 

Load cell Voltage : 2mV/V 

Digit : 0.10kg 

Affirmation Voltage of Load cell : 5,000mV 

Max. Capacity of Weighing System : 1,000kg 

 

Then, estimation result for this weighing system with formula, 

5000

2

0.10 

= 0.5 

 0.2

 

The  calculated  value  is  larger  than  0.2

,  so 

this system has no problem. 

500

4

 

 Accordin

g to “Resolution” or “Capacity”, it might not be calibrated like calculation.

 

Caution 

Summary of Contents for si 4500

Page 1: ...Digital Weighing Indicator Model SI 4500 Operation Manual Version 1 34 2009 06 Sewhacnm Co Ltd ...

Page 2: ... Simulation Calibration Mode Without Test Weight 5 4 Set up 5 5 F Function 16 page 16 page 16 page 20 page 24 page 25 page 6 Interface 6 1 Serial Interface RS 232C 6 2 Current Loop Interface 6 3 Print Interface Option 01 Centronics Parallel Interface 6 4 Analog Output Interface Option 02 0 10V 6 5 Analog Output Interface Option 03 4 20mA 6 6 Serial Interface Option 04 RS 232C 422 485 6 7 BCD INPUT...

Page 3: ...lectric Shock or Damage Please do not touch by hand Protective Ground Earth terminal Prohibition of Operation process 1 3 Copy Rights 1 All Right and Authority for this Manual is belonged to Sewhacnm Co Ltd 2 Any kinds of copy or distribution without Sewhacnm Co Ltd s permission will be prohibited 1 4 Inquiries If you have any kinds of inquiries for this model please contact with your local agent ...

Page 4: ...For the improvement of function or performance we can change item specification without prior notice or permission 7 Item s performance will be up dated continuously base on previous version s performance 2 3 Features 1 All Modules and Option Cards are isolated to maximize accuracy and performance 2 Self diagnose function 3 External input terminal inside 4pcs can be connected with PLC or Sequence ...

Page 5: ...g Rate Max 500times Sec Non Linearity 0 005 FS Display Resolution External 1 20 000 3 2 Digital Part Display Parts Specification Display Main Display 7Segments 7digits VFD green Color Size 12 7 H 7 0 W mm Sub Display 7Segments 6digits FND Red Color Size 9 2 H 4 8 W mm 4pcs Min Division 1 2 5 10 20 50 Max display value 999 950 Under Zero value Minus display Status lamp Steady Zero Tare STB Run Prin...

Page 6: ...rd Option No 1 Printer Interface Centronics Parallel Option No 2 Analog Output 0 10V or 0 5V Option No 3 Analog Output 4 20mA Option No 4 Serial Interface RS 232C 422 485 Option No 5 BCD INPUT P N change purpose Serial Interface RS 232C or Current Loop is Standard installed In the Optional Serial port there is no Current Loop function 3 5 Front Panel Display Key Pad Weight Display Calibration Lock...

Page 7: ...ss will not activated 1 To START or STOP weighing process First input SI 4500 Controller Starts weighing process and Second input SI 4500 Controller stops weighing process Steady When the weight is Steady Lamp is turn on Zero When the current weight is Zero Lamp is turn on Displayed weight is Zero Lamp is turn on Tare Tare function is set Lamp is turn on Tare Reset Lamp is turn off STB Batch Stand...

Page 8: ...e with this key PRE1 value set PRE1 Number key Enter PRE1 value Check Press PRE1 Display during 5sec Set each Bin s Free Fall value and control FINISH relay in advance Free Fall value setting Free Fall Number key Enter Free Fall value check Press Free fall Display during 5sec 1 Manual Print F38 00 setting under F35 01 2 Manual weighing Data save for accumulated weighing count and weight F01 00 02 ...

Page 9: ... to Calibration Mode OFF Exit from Calibration Mode Function Keys Combined Key functions Function Key Contents Print all P Ns accumulated weighing count and weight Grand Total Print Print current P N s accumulated weighing count and weight Sub Total Print Set Total No of BIN which will be used for current Batch process Max 16kinds Bins will be settable or single process Not using BIN Must set FINA...

Page 10: ...ta will be automatically deleted after Sub Total Print Remove TARE After Pressing key you have to input above function keys within 5sec After 5sec the key activation is loose If you set F51 01 you can check the key activation through Main display After Pressing key non function keys are input the key activation will be loose 3 6 Rear Panel AC Power Input Option Card 1 Option Card 2 Load Cell Input...

Page 11: ...d 1 Option Card 2 Option Card Connector installed for Optional Interface or Output Printer I F Analog out RS 422 485 or RS 232C two port L OAD CELL Connector N16 05 SERIAL I F RS 232C or CURRENT LOOP 9Pin D Type Female are built in as standard External Input External control input for wired remote control Refer to F Function F11 to select desired function mode Input signal Optical Isolator 3 7 Ins...

Page 12: ...DIGITAL WEIGHING INDICATOR SI 4500 12 4 INSTALLATION 4 1 External Dimension Cutting Size External Dimension unit mm Cutting Size unit mm 94 188 165 105 200 162 0 92 186 ...

Page 13: ...se Summing box and adjust output signal difference as minimum It can make wrong weighing process caused by each load cell s variation 4 If there is some temperature difference around Load cell it can cause wrong weight measurement 5 Don t do Welding job or Arc discharge around installation place But there is no choice please disconnect power cable and Load cell cable 6 If you measure static electr...

Page 14: ...EXC SIG SIG SHIELD Sewha CNM Red White Green Blue Black Bongshin CAS TMI AND Red White Green Blue Yellow Shield Daesung Red Black White Green Shield Power MNC Red White Green Black Shield Disocell Red Blue Green White Black Dacell Red White Green Blue Shield BLH Green Black White Red Yellow INTERFACE Red Black Green White Shield KYOWA Red Black Green White Shield P T Red Black Green White Shield S...

Page 15: ...B D ⅹ ⅹ 0 2 A N ⅹ Example1 Number of Load cell 1pcs Load cell capacity 500kg Load cell Voltage 2mV V Digit 0 05kg Affirmation Voltage of Load cell 5 000mV Max Capacity of Weighing System 300kg Then estimation result for this weighing system with formula 5000 2 0 05 ⅹ ⅹ 1 0 2 The calculated value is larger than 0 2 so this system has no problem 500 Example2 Number of Load cell 4pcs Load cell capaci...

Page 16: ...side Then you can enter the Calibration Mode with and start calibration mode with pressing key Remove the CAL Bolt Push the CAL S W Check the SET CAL Massage on display For the save the each step press key for the cancel or move back press key Step No 1 Setting Capacity of weighing Scale Set Max Capacity of Load cell Press Enter and move the next step Under this step input Max Capacity of you weig...

Page 17: ...it Division value Set Digit Division with 0 key Press Enter and move the next step Press Enter and move the next step Press Enter and move the next step Under this step define the optimal Digit Division value of weighing measurement Whenever pressing key the Digit Division value will be changed like 01 02 05 10 50 On the optimal Digit Division value stop pressing key and press key to save and move...

Page 18: ...utomatically move to next step Caution At this step if there some force or Vibration on Weighing scale and unstable condition will be continued ErrorA will be display and DEAD value will not be calculated Under this condition please remove force or vibration and process it again Step No 5 Input Test Weight value and Calculate SPAN value Input Test weight capacity Input Test weight capacity and pre...

Page 19: ...value is over 5 000 please prepare Standard weight at least 20 of Max load cell capacity value or Max display capacity value and set This will be make more accuracy calibration setting If you set test weight value over max load cell capacity Error Message Err 04 will be displayed If you set test weight value under 10 of max load cell capacity value Error Message Err 05 will be displayed Step No 6 ...

Page 20: ...on Mode with and press key to enter Simulation Calibration Mode with and start calibration mode with pressing key Remove the CAL Bolt Push the CAL S W Press NO 1 key to enter the CELL Calibration mode Check the CELL CAL Massage on display For the save the each step press key for the cancel or move back press key Step No 1 Setting Capacity of Load cell Enter the Capacity input mode Check Max Capaci...

Page 21: ...nder this step define the optimal position or Decimal point Whenever pressing key Decimal point will be changed like XXX XX X X XX XXX The Max Decimal point will be third place under Zero On the Optimal position stop pressing key and press key to save and move to next step Step No 3 Setting Digit Division value Enter the division input mode Select optimal division with pressing o key Press Enter k...

Page 22: ...rom other external variations When you press key the indicator start measurement and find optimal Dead weight value of Scale automatically Caution At this step if there some force or Vibration on Weighing scale and unstable condition will be continued ErrorA will be display and DEAD value will not be calculated Under this condition please remove force or vibration and process it again Step No 5 In...

Page 23: ...e after finishing calibration If you want to make more precise weighing process please measure real output rate of load cell and input the measured value Then the weight measurement will be more precise than before Step No 6 End calibration process and Calibration S W OFF Calibration process completed Push Calibration Lock S W and tight Cal Bol Now the Simulation Calibration is done Press key to s...

Page 24: ... 90 and return to F 01 If you move to certain function No press f function no with number key and press key Ex If you want to call F11 XX directly under F function mode Press and key and press key Then you can call F22 XX directly 5 4 3 F Function Set Value Change Under F Function mode input New set value with Number keys and press key to save If you don t press key the new set value will not be m...

Page 25: ...ect on weighing process 1 Weak vibration 50 Strong Vibration Zero Tracking Compensation Range setting F04 2 0 9 Due to external causes Temperature wind and dust there are small weight difference indicator will ignore the weight difference and display Zero For this compensation function indicator will estimate the weight difference is over the set range during fixed time period If there is large we...

Page 26: ...ity 1 Activated within 5 of Max Capacity 2 Activated within 10 of Max Capacity 3 Activated within 20 of Max Capacity 4 Activated within 50 of Max Capacity 5 Activated within 100 of Max Capacity 6 Whenever Press Zero key No Limit Tare key Operation Range selection F09 0 Activated within 10 of Max Capacity 1 Activated within 20 of Max Capacity 2 Activated within 50 of Max Capacity 3 Activated within...

Page 27: ...t 190ms FINAL PRE1 Free Fall No of BIN Set value apply selection F14 0 Apply only certain P N 1 Apply same set value to all P N BATCH Process Back Up Mode F15 0 Normal Mode Batch Process will not be saved 1 Back Up Mode Batch Process will be saved Minus symbol display selection F16 0 Display symbol on the display 1 Not use NEAR ZERO relay output mode selection F17 0 Display weight is Zero Includin...

Page 28: ...relay output 20 setting During 2 0sec Batch Finish relay output Empty Relay Output Selection F25 0 Absolute Weight Value weight value Empty Relay output ON 1 Positive Weight Value Only for weight value Empty Relay will be output Batch Finish Relay Output Duration Time t3 setting F27 10 01 99 After the last Bin s Finish relay s delay time Batch Finish relay will be output during set time period 01 ...

Page 29: ...eset WEIGHT TIME Batch STB IN 3 Bin START IN 1 PRE 1 OUT 1 Free Fall OUT 2 Bin FINISH OUT 3 Error Relay OUT 5 Bin Move Automatic Batch FINISH OUT 4 Discharge PLC Output Empty OUT 6 t1 t2 PRE 1 Free Fall FINAL Bin Finish PRE 1 Free Fall FINAL Bin Finish t1 t2 t1 t2 t3 ...

Page 30: ...DATA Transference Method selection F32 0 Simplex Mode Stream Mode 1 Duplex Mode Command Mode Print port selection Under F32 01 setting only F33 0 Same port as using for Command Mode 1 The other port Check Sum detection selection Under F32 01 setting only F34 0 Check Sum data will not be included on transferred data 1 Check Sum data will be included on transferred data Serial Port Application Selec...

Page 31: ...M MODE Output Data Selection F32 00 F3 00 F36 00 setting F39 0 Current weight data will be output same as main display 1 Accumulated Weight data will be output Transferring DATA Byte selection F40 0 7 Byte data Transfer 1 8 Byte data Transfer Print Mode Setting These settings will be apply to Serial and Parallel print Weight Unit selection F41 0 kg 1 g 2 t Print Format selection If you install on ...

Page 32: ...er Continuous Single Print F46 3 0 9 Whenever set value increased 1line will be added Printing Language Selection If you install on Standard Serial Port F47 0 KOREAN 1 ENGLISH Printing Language Selection If you install on Optional Serial Port F48 0 KOREAN 1 ENGLISH Minus symbol Print selection F49 0 Print minus symbol if the weight is minus 1 Ignore minus symbol Parallel Print Port selection F50 0...

Page 33: ...tput option card is installed F56 0 At Max Capacity 20mA 10V will be output 1 At PRE1 set point 20mA 10V will be output 2 At FINAL set point 20mA 10V will be output Other Setting Under Other setting mode you can not move to other function directly Press key and move to F01 and move to other function No directly EMPTY Range setting F80 X X X X X X 0 0 0 0 1 0 You can set EMPTY Range Within set rang...

Page 34: ...can Change to new date TIME check Change F91 Check Current TIME data or you can Change to new date Program Hard ware Version Check F98 Check the Program Hard ware version H W X XX S W X XX X Production DATE Check F99 Check the Product s Production Year and Month Communication Mode setting Serial Port 2 Optional Serial port This setting will be activated only when Optional Serial Port is installed ...

Page 35: ... Application Selection Under F62 00 setting only F65 0 DATA Transference purpose 1 Printing purpose Serial Printer DATA Transference Mode selection Under F62 00 F65 00 setting only F66 0 Stream Mode Weighing Data will be transferred continuously 1 Finish Mode When Finish Relay output only 1 time transferred 2 Manual Mode When Print key input 1 time transferred DATA Transference Format selection Un...

Page 36: ...ld cable to reduce the electric noise effect 6 1 1 Communication with PC Personal Computer or Other devices 6 1 2 RS 232C Circuit 6 1 2 Data Format 1 ID Number will not be transferred Refer F function 37 Including Decimal point k g CR LF Header 1 Header 2 Data Byte 7 or 8 byte F40 setting Unit 2 RxD 3 TxD 5 SG 2 3 5 SI 4500 2 RxD TxD 3 3 TxD RxD 2 5 SG SG 5 Personal Computer 9pins Standard ...

Page 37: ...lay Data 8 Space Weight Unit 6 1 5 Data Format AD 4321 Data Transference AD 4321 18byte Format Including Decimal point 8byte k g CR LF Header 1 Header 2 Data 8 Space WeighUnit 6 2 Current Loop Interface Current Loop Interface is stronger for Electric Noise than RS 232C interface So it can be used for long distance communication About 100m long distance Current Loop Interface supports up to 9 600 C...

Page 38: ... Option 01 Centronics Parallel Interface This Print Interface Option is based on Centronics Parallel Interface so this print interface can be connected other printers using this communication method But the print format is programmed based on our SE7300 and SE7320 Industrial Printers so you had better to use these printer for convenience SI 4500 3 RxD TxD 8 4 RxD TxD 9 Remote Display External Disp...

Page 39: ...A1 Data bit1 signal out 16 N C 4 DATA2 Data bit2 signal out 17 N C 5 DATA3 Data bit3 signal out 18 GND GROUND out 6 DATA4 Data bit4 signal out 19 GND GROUND out 7 DATA5 Data bit5 signal out 20 GROUND out 8 DATA6 Data bit6 signal out 21 GROUND out 9 DATA7 Data bit7 signal out 22 GROUND out 10 ACK Data Response In 23 GROUND out 11 BUSY Busy signal In 24 GROUND out 12 13 N C 25 GND GROUND out ...

Page 40: ...E 2006 10 15 TIME 10 20 30 ID_N 01 FORMULA 01 BIN_NUMBER WIEGHT 01 BIN 4 000kg 03 BIN 4 016kg 06 BIN 4 556kg 07 BIN 2 000kg TOTAL COUNT 4 TOTAL WEIGHT 3 572kg GRD TOTAL DATE 2006 10 15 TIME 10 40 30 ID_N 01 FORMULA SERIAL WEIGHT 01 4 13 572kg 02 5 32 574kg 06 3 10 483kg TOTAL COUNT 12 TOTAL WEIGHT 56 629kg Detailed Format Detailed Format Detailed Format Detailed Format Simple Format Simple Format ...

Page 41: ... 3 Output Adjustment This output is adjusted as when the weight is Zero output is 0V and When the weight is Full capacity output is 10V If you need additional adjustment please adjust with VR1 Zero VR2 Span on the Analog Output PCB Remark This Analog option card converts Displayed weight value Micro process data to analog value on D A Converter Digital to Analog converter This D A Converter has Ma...

Page 42: ...y 20mA current will be output 6 5 2 Circuit LO terminal is not a GND so this LO terminal do not be connected with other GND terminal on other devices 6 5 3 Output Adjustment This output is adjusted as when the weight is Zero output is 4mA and When the weight is Full capacity output is 20mA If you need additional adjustment please adjust with VR1 Zero VR2 Span on the Analog Output PCB Remark This A...

Page 43: ...mmendable communication distance is about 1 2km If you install additional RS 232C interface please refer 6 1 Serial Interface section 6 6 1 Signal Format Type RS 422 485 Format Baud Rate Refer F function 31 Data Bit 7 or 8 No Parity Stop 1 Parity Bit Even Odd No Parity Selectable Code ASCII STX 02H ETX 03H CR 0DH LF 0AH 1 LSB 0 1 2 3 4 5 MSB 6 0 6 6 2 Data Format Same as RS 232C Refer 6 1 Serial I...

Page 44: ...tion Diagram 10 10 10 100 0 0 0 X1 X1 X1 X1 10 10 10 100 0 0 0 X2 X2 X2 X2 10 10 10 100 0 0 0 X4 X4 X4 X4 10 10 10 100 0 0 0 X8 X8 X8 X8 10 10 10 101 1 1 1 X1 X1 X1 X1 10 10 10 101 1 1 1 X2 X2 X2 X2 10 10 10 101 1 1 1 X4 X4 X4 X4 10 10 10 101 1 1 1 X8 X8 X8 X8 10 10 10 100 0 0 0 X1 X1 X1 X1 10 10 10 100 0 0 0 X2 X2 X2 X2 10 10 10 100 0 0 0 X4 X4 X4 X4 10 10 10 100 0 0 0 X8 X8 X8 X8 10 10 10 101 1 ...

Page 45: ...DIGITAL WEIGHING INDICATOR SI 4500 54 6 8 BCD Output Interface Option 06 ...

Page 46: ...weighing BIN NO 2byte STX ID NO RBIN Current weighing BIN No 2byte ETX STX ID NO RFML ETX Current Weighing Formula No Current weighing FORMULA No 2byte STX ID NO RFML Formula No 2byte ETX STX ID NO RFIN ETX Current Weighing BIN s FINAL Current Weighing BIN s FINAL value 7 8byte including Decimal point STX ID NO RFIN BIN s FINAL value 7 8byte ETX STX ID NO RDRI ETX Current Weighing BIN s PRE1 Curre...

Page 47: ... NO WTIM Time Data 6byte ETX Time Change ACK or NAK STX ID NO WDAT Date Data 6byte ETX Date Change ACK or NAK STX ID NO WDRI PRE 1 data 7 8byte ETX PRE 1 value setting ACK or NAK STX ID NO WFRE Free Fall data 5byte ETX Free Fall value setting ACK or NAK STX ID NO WFIN FINAL value 7 8byte ETX FINAL value setting ACK or NAK STX ID NO WSNO Accumulated Weighing Count 6byte ETX Accumulated Batch Count ...

Page 48: ...350Ω 3 Isolate Resistance is more than 100Ω Weight Value is increased regular rate but not return to Zero 1 Load cell Error 2 Load cell connection Error 1 Check Load cell connection 2 Measure Load cell Resistance Weight Value is increased to under Zero Load cell Output wire SIG SIG is switched Make wire correction UN PASS display Load cell broken or Indicator connection Error Load cell Check Load ...

Page 49: ...rror 3 Test weight is not loaded Check standard weight s weight with set value If there is difference between set value and real weight please re input the value set value is too small Err 07 1 Amp Gain is too small 2 Sig and Sig wire connection error 3 Test weight is not loaded Check standard weight s weight with set value If there is difference between set value and real weight please re input t...

Page 50: ...indicator will stay until removing the load Setting Back up mode it can memory empty value and it becomes set value without displaying Un pass 1 If you set Normal Mode please check weighing part empty or not before turn on the power If there are some materials in on weighing part please remove those materials and turn on the power 2 Please try to set F02 01 Back up mode so that the indicator can r...

Page 51: ...s in on weighing parts If you can not remove materials please remove relay terminals Test 4 External Input Test Under TEST display press No 4 key and Enter TEST4 mode If you press External input S W the External S W No will be displayed If the S W No is not displayed please check connecting condition Test 5 Communication Test Com Port 1 Under TEST display press No 5 key and Enter TEST5 mode After ...

Page 52: ...hout Sewhacnm s permission Any kinds of Mal function Defection or External damage caused by operator Any kinds of Mal function Defection caused by using spare part from Non Authorized Distributor or Agent Any kinds of Mal function Defection caused by not following Warnings or Cautions mentioned on this manual Any kinds of Mal function Defection caused by Force Majeur like Fire Flood Without presen...

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