Sewha SI 300 Instruction Manual
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Sewha SI 300 Instruction Manual

Digital weighing indicator
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Digital Weighing Indicator
SI 300
Instruction Manual
Ver.1.05 (2015.02)

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Summary of Contents for Sewha SI 300

  • Page 1 Digital Weighing Indicator SI 300 Instruction Manual Ver.1.05 (2015.02)

  • Page 2: Table Of Contents

    SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR CONTENTS 1. Before Installation ------------------------- 3 Page 2. Introduction ------------------------- 4 Page 3. Specification ------------------------- 5 Page 3-1. Specification ------------------------- 5 Page 3-2. Front Panel ------------------------- 6 Page 3-3. Connector...

  • Page 3: Before Installation

    Copy Rights 1. All Right and Authority for this Manual is belonged to SEWHA CNM CO., LTD. 2. Any kinds of copy or distribution without permission of SEWHA CNM CO., LTD. will be prohibited. This manual may be changed as the version is upgraded, without previous notice.

  • Page 4: Introduction

    7. Item’s performance will be up-dated continuously base on previous version’s performance. Features 1. SI 300 model is the standard 1/8 DIN SIZE and compact enough, so it is easy to install. 2. It has wide range of DC Input.
  • Page 5 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 3. SPECIFICATION 3-1 Specification Content Specification External Resolution 1/20,000 Internal Resolution 1/2,097,152 (±1,048,576) Input Sensitivity 0.1µV/V Max. Signal Input Voltage 3.0 mV/V Load cell Excitation DC +5V Performance A/D Conversion Method...

  • Page 6: Front Panel

    SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 3-2. Front Panel 3-2-1 Front Panel (Display / Key Pad) 3-2-2. State Lamp Display Meaning STEADY When the weight is “STEADY”, Lamp is ON. ZERO When the current weight is ”ZERO”, Lamp is ON.
  • Page 7 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 3-2-3. Key Operation 1. Normal Mode : Make Weight value as Zero. (F07, F08 setting) 2. Calibration Mode : Cancel the value or move to previous step. 1.Normal Mode : Set the TARE Function .(F09 setting) 1 time input : “TARE”,...

  • Page 8: Connector

    SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 3-3. Connector 3-4. Composition AC Power SI 300 Side Bolt Terminal Pin Manual Cable...

  • Page 9: Installation

    SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 4. INSTALLATION 4-1. External Dimension & Cutting Size External Dimension (unit: mm)
  • Page 10 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 4-2 Load cell Installation Load Cell Wire Connection (In case of SEWHACNM’s Load cell) It depends on the manufacturer of load cell, please check the specification. -----Sewhacnm Co.,ltd. Load cell & wire color---- ※...

  • Page 11: Set Up Mode

    SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 5. SET-UP 5-1. (Calibration) Adjusting “ZERO” Balance Adjust weight balance between “Real weight” on the load cell(Weight Part) and “Displayed weight of Indicator”. When you replace LOAD CELL or Indicator, you have to Calibrate process once again.

  • Page 12: Test Weight Calibration Mode

    SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 5-2 Test Weight Calibration Mode (Using test weight) 5-2-1. Starting Test Weight Calibration Mode Cal1br CALIBR” When “ is displayed, press key. Then Test Weight Calibration Mode will be started.
  • Page 13 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 5-2-4. Measuring the “DEAD” Weight of Weighing Scale. dead When “DEAD” is displayed, press key, then indicator will calculate Dead weight of scale part automatically. Cal-0 Indicator will search “DEAD weight” during 10~20 seconds to find the best condition.

  • Page 14: Simulating Calibration Mode

    SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 5-3. Simulation Calibration Mode(Calibrate without Test weight) With this “Simulation Calibration Mode” you can make simple calibration without any “TEST weight” This calibration mode uses “Load cells’ max capacity” and “Max Output Rate(mV)”, so the weight adjustment degree might be less than “Test weight Calibration”.
  • Page 15 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 5-3-4. Measure the “DEAD Weight” of Weighing Scale. dead When “DEAD” is displayed, press key with empty scale. Then the indicator starts to measure and find optimal “Dead weight value of Scale”...

  • Page 16: F-Function Setting

    SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 5-4. F-FUNCTION Setting This is the Menu which can set the all of the functions. 5-4-1. Start “SET UP” Mode (Pass Word Not use) 5etUp Press key four times within 2sec When “SET UP”...
  • Page 17 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR ■ F-Function List General Function Setting (“●” Factory default set value) Weighing Data Save Method selection ● Non-Save Mode (Weight Data & weighing counter) Save Mode ( Weight Data & weighing counter) Weight –Back up selection...
  • Page 18 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR Tare key Operation Range selection : (-) value is same to (+) Activated within 10% of Max. Capacity Activated within 20% of Max. Capacity ● Activated within 50% of Max. Capacity Activated within 100% of Max.
  • Page 19 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR DATA Bit (8 Bit) STOP Bit (2 Bit) Parity Bit (Even) DATA Bit (7 Bit) STOP Bit (1 Bit) Parity Bit (Odd) DATA Bit (7 Bit) STOP Bit (1 Bit)
  • Page 20 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR Format 2. (Format 1 + ID No.) Format 3. (recommended when connecting to PLC or PC) CAS Format Print Mode selection (Under F32-02 setting, only) ● Manual Print : Whenever “Print” key input.
  • Page 21 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR ■ Other Setting Mode EMPTY Range setting You can set “EMPTY” Range. Ex) “0” setting : When Net Zero, “Zero” status lamp is ON. “200” setting : Under “200”, “Zero” Status lamp is ON.

  • Page 22: Test Mode

    SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 5-5. Test Mode Before starting the TEST mode, please remove operating devices. 5etUp te5t Press key 4 times then “SETUP”displays input key to stard TEST mode. TEST MODE 1 Analog value...
  • Page 23 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 5-5-2. Key / Digital input Test Mode Under this mode, you can test Key input and Digital Key input test key 4 times  key  5-5-3. Serial Interface Test Mode.

  • Page 24: Interface

    SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR INTERFACE 6-1. Serial Interface 6-1-1. Serial Interface (RS-232C) RxD ------------------- 3 TxD -------------------- 2 PC : 9 PIN GND -------------------- 5 SI300 Terimal 6-1-2. Current Loop ------------------- -------------------- Display SE 6135A...
  • Page 25 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 6-1-4. Data Format 1. Data Format1 : ID Number is not be transferred.(Refer “FUNCTION 37/F67-00” setting) Header1 Header2 OL : OVER LOAD NT : NET-WEIGHT(Tare is not set) ST : STEADY...
  • Page 26 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 4. CAS Format (22byte) LAMP DISPLAY Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Gross STEADY Hold Print TARE ZERO Weight Header1...
  • Page 27 HEX : 02 30 31 52 43 57 54 03 STX ID RCWT State1(1byte) State2(1byte) P decimal point(1byte) +/-(1byte) Current weight(7byte) unit(2byte) ETX SI 300 response State1 : O(Over load) , S(Steady), U(Unsteady) State2 : N(Net weight), G(Gross weight), P+No. : decimal point number Ex) Steady(S), TARE not used(N), 0.000kg...
  • Page 28 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 4.Finished Weight data ASCII : STX ID(2Byte) RFIN ETX HEX: 02 30 31 52 46 49 4E 03 SI 300 response STX ID RFIN P decimal point(1byte) +/- Finished weight(7byte) ETX Ex) Finished weight : 2.000kg decimal point 5.
  • Page 29 Zero (same as “ZERO” key) ASCII : STX ID(2Byte) WZER ETX HEX: 02 30 31 57 5A 45 52 03 SI 300 response normal: STX ID ACK ETX error: STX ID NAK ETX TARE ASCII : STX ID(2Byte) WTAR ETX...
  • Page 30 Time setting ASCII : STX ID(2Byte) WTIM Time (6byte)ETX Ex) Time : 12:00:00 SI 300 response normal: STX ID ACK ETX error: STX ID NAK ETX Change S/N ASCII : STX ID(2Byte) WSNO S/N(6byte)ETX Ex) S/N is changed to 100...
  • Page 31 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR Command Mode Example ■ READ COMMAND Ex.) Current Weight Command(RCWT), ID No. : 01, Current Weight : 7,000kg 1) P.C Read Command Format (STX ID NO. RCWT ETX) “Check-sum” not used.
  • Page 32 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR WRITE COMMAND Ex) SP1 Setting Command, ID No : 01, New SP1 Set value : 0.600kg 1) PC Write command format (STX ID WPR1 000.600 ETX) “CHECK SUM” not use.

  • Page 33: Serial Print

    SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 6-2 Serial Print (F32-02 setting) – RS-232 Serial Interface. It can be connected with all kinds of Serial interface printer, but the printing format is already programmed and fixed with SE7200/7300 model.

  • Page 34: Error & Treatment

    SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 7. Error & Treatment 7-1. Load Cell Installation Error Cause Treatment Remarks 1) Load cell broken 1. Input Resistance of 2) Load cell isolation 1) Measure “EXC+” and “EXC-“ is...
  • Page 35 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 7-2. Calibration Process Display Cause Treatment Re-input the Max. Capacity, less than When Max.capacity/digit value is over Eerr01 20.00 20,000 (Max. Capacity / Digit) Standard weight value is over than Max.
  • Page 36 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR 7-3. Digital Weighing Indicator Display Cause Treatment 1. Under “TEST” mode 1, check analogue 1. Load cell Error value. If you cannot get any analogue 2. Load cell cable Error value or there is no change although 3.Load cell connection Error...
  • Page 37 SI 300 Wall mounting / Desk type DIGITAL WEIGHT INDICATOR WARRANTEE CETIFICATION This product is passed “Sewhacnm’s strict quality test. If there is defect of manufacturing or abnormal detection within warrantee period, please contact our Agent or Distributor with this Warrantee certificate.

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