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Zemic GM8802C-E User Manual

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GM8802C-E
User's Manual
GM8802C-0E110102
4 8 0 1 0 2 0 3 2 3 1 0 0 3

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Summary of Contents for Zemic GM8802C-E

  • Page 1 GM8802C-E User's Manual GM8802C-0E110102 4 8 0 1 0 2 0 3 2 3 1 0 0 3...

  • Page 2: Table Of Contents

    CONTENTS     1 General Description ............... 1  1.1 General Description ............ 1  1.2 Functions and Features ..........1  1.3 Front Panel ..............2  1.4 Technical Specifications ..........4  2 Installation ................6  2.1 Connection of Load Cell ..........6  2.1.1 6 wires Connection ..........
  • Page 3 2.1.2 4 wires Connection ..........9  2.2 Connection of Power Supply ........10  2.3 Connection of Analog Output......... 11  2.4 Connecting with GM8891C Indicator ....12  2.4.1 The Front Panel Description of GM8891C ..13  2.4.2 Rear Panel Description of GM8891C ....15  2.4.3 The Relevant Parameters of GM8891C .....
  • Page 4 4  Calibration ................23  4.1 Calibration Method ............ 24  4.2 Log Table for Calibration with Weight ....29  4.3 Method of Calibration without Weight ....30  4.5 Table for Parameter Calibration 2 ......35  5 Working Parameters Setting ..........35  5.1 Parameter Setting Method ........
  • Page 5 6.3 Connected with PC ............ 44  7  Common Problems ............45  8  Dimensions ................ 49  9  Appendix ................50 ...

  • Page 6: General Description

    GM8802C-E Compact Transmitter 1 General Description 1.1 General Description GM8802C-E weighing transmitter is a small instrument which is widely used in weight-transmitted industry field. 1.2 Functions and Features  Small dimension to operate easier.  Suitable for all resistance strain sensors.

  • Page 7: Front Panel

    GM8802C-E Compact Transmitter 1.3 Front Panel GM8802C-0E110102 - 2 -...
  • Page 8 GM8802C-E Compact Transmitter GM8802C-E Front Panel Figure 1 —— Input Interface of Power Supply 2 —— Input Interface of Weighing Sensor 3 —— Output interface of Analog 4 ——Communication Interface of Parameter Setting POWER：Indicator Light of Power Supply OUT: Indicator Light of Analog output...

  • Page 9: Technical Specifications

    GM8802C-E Compact Transmitter 1.4 Technical Specifications General Specifications: Power supply: DC24V ± 5% Working temperatures：-10～40℃ Humidity: 90%R.H without dew Power: about 3w Dimensions：92×90×45（mm） Analog Part: Load cell exciting voltage ：DC5V 280mA（MAX） Input resistance：10MΩ Zero point adjustment range；0.2～8mV Input sensitivity：0.5uV/d GM8802C-0E110102...
  • Page 10 GM8802C-E Compact Transmitter Input range: 0.02～10.5mV A/D conversion: Sigma – Delta A/D conversion speed: 200times/second Non-linear：0.01% F.S Gain drifting: 10PPM/℃ D/A resolution ratio: 16 Bits Analog output: 4-20mA / 0-20mA / 0-10V / 0-5V / 1-5V (optional) GM8802C-0E110102 - 5 -...

  • Page 11: Installation

    2.1 Connection of Load Cell Please refer to the picture in to connect load cells to the GM8802C-E transmitter. When you chose the four-wired load cells, you must bridge the SN+ with EX+ and bridge the SN- with EX-. Because the input signal of the sensor is a analog...
  • Page 12 GM8802C-E Compact Transmitter The signal definition of each port of the load cell connector as follows: Port SIG+ SIG- Shield Excitation Sense Excitation Sense Signal Signal Definition GM8802C-0E110102 - 7 -...

  • Page 13: Wires Connection

    GM8802C-E Compact Transmitter 2.1.1 6 wires Connection Load cell Shield GM8802C-0E110102 - 8 -...

  • Page 14: Wires Connection

    GM8802C-E Compact Transmitter 2.1.2 4 wires Connection GM8802C-0E110102 - 9 -...

  • Page 15: Connection Of Power Supply

    GM8802C-E Compact Transmitter 2.2 Connection of Power Supply GM8802C-E transmitter uses 24V direct-current power and the connection as follows: 24-: Negative pole : Positive pole GM8802C-0E110102 - 10 -...

  • Page 16: Connection Of Analog Output

    GM8802C-E Compact Transmitter 2.3 Connection of Analog Output GM8802C-E transmitter can change the current weight value into analog output, the output interfaces are : Vout， Iout and GND as follows: Here: Vout：Analog output positive GND: Common ground Iout：Analog output negative...

  • Page 17: Connecting With Gm8891C Indicator

    GM8802C-E transmitter, and also can operate GM8802C-E by keyboard , such as calibration and parameters setting on GM8802C-E. If fail to be connected with GM8802C-E transmitter, GM8891C indicator can’t power up. GM8802C-0E110102 - 12 -...

  • Page 18: The Front Panel Description Of Gm8891C

    GM8802C-E Compact Transmitter 2.4.1 The Front Panel Description of GM8891C GM8891C Front Panel Figure The main display： 6 bits， displaying the weight data/analog output and relevant data. Status indicator lights： GM8802C-0E110102 - 13 -...
  • Page 19 GM8802C-E Compact Transmitter  ZERO：Zero point, lights up when the weight on the weighing platform or hopper is 0±1/4d.  STAB：Stable，lights up when the weighing value is within stability criterion range.  DATA: lights up when it display mA (or V) output.

  • Page 20: Rear Panel Description Of Gm8891C

    GM8802C-E Compact Transmitter 2.4.2 Rear Panel Description of GM8891C GM8891C Rear Panel Figure 1、Communication interface 2、GND connection GM8802C-0E110102 - 15 -...

  • Page 21: The Relevant Parameters Of Gm8891C

    Overflow display： “OFL” Decimal point position： 5 options Keyboard： Four-key beep keyboard 2.4.4 Connecting Cable Special connecting cable to connect with GM8802C-E and GM8891C indicator or PC by both serial port signal wire and power wire in cable. GM8802C-0E110102 - 16 -...

  • Page 22: Connecting Method

    GM8802C-E Compact Transmitter 2.4.5 Connecting Method The connection steps between GM8802C-E transmitter and GM8891C digital operational panel as follows (users must have special communicating cable and either GM8891C indicator or special PLC software produced by our company): Step no.1: Firstly, power off GM8891C and GM8802CE, then...
  • Page 23 GM8802C-E Compact Transmitter Figure a Step no.2: Then power up GM8802C-E (24V), GM8891C indicator will display value after 2 seconds, which means user can set parameters now, otherwise failed, so please power off and check the communication digital cable, then power up GM8802C-E (24V) again .
  • Page 24 The function of our special PLC software is similar as GM8891C indicator, so the above four steps is suitable for the connection between GM8802C-E and our special PLC software to enter parameter setting mode. Please pay attention to connect the communication line first (Figure b),...
  • Page 25 GM8802C-E Compact Transmitter then operate this PLC software, open the interface, Baud rate is 19200, power up GM8802C-E till the PLC display show “------”. When successfully connected, you can start to set parameter and calibration, after that, power up (24V).

  • Page 26: Data Input Operation

    GM8802C-E Compact Transmitter 3 Data Input Operation When GM8802C-E is connected with GM8891C correctly, user can set parameters and calibration etc. Data input operation is needed during calibration and parameter setting as follows: Press the following keys to finish the data input...
  • Page 27 GM8802C-E Compact Transmitter ：Flickering position move 1 place to the right. When the flickering digit is the last place, press the key, then the flickering place move to the left place. : Confirm the data input and finish the operation.

  • Page 28: Calibration

    Please refer to the following details: （1） When GM8802C-E and GM8891C are connected correctly, user can press GM8891C keyboard. （2） During calibration, please record the value for parameter calibration for urgent calibration later.

  • Page 29: Calibration Method

    GM8802C-E Compact Transmitter 4.1 Calibration Method GM8802C-0E110102 - 24 -...
  • Page 30 GM8802C-E Compact Transmitter GM8802C-0E110102 - 25 -...
  • Page 31 GM8802C-E Compact Transmitter GM8802C-0E110102 - 26 -...
  • Page 32 GM8802C-E Compact Transmitter GM8802C-0E110102 - 27 -...
  • Page 33 GM8802C-E Compact Transmitter GM8802C-0E110102 - 28 -...

  • Page 34: Log Table For Calibration With Weight

    GM8802C-E Compact Transmitter 4.2 Log Table for Calibration with Weight Record the zero millivolt value, gain millivolt value and weight value in the below table for later urgent calibration without weight. Please follow below flow chart for calibration method: Millivolt at...

  • Page 35: Method Of Calibration Without Weight

    GM8802C-E Compact Transmitter 4.3 Method of Calibration without Weight Input the Millivolt value recoded at step 4.2 for urgent calibration . But if sensor was changed or there is any change in controller system, the above record will be inaccurate.
  • Page 36 GM8802C-E Compact Transmitter GM8802C-0E110102 - 31 -...
  • Page 37 GM8802C-E Compact Transmitter GM8802C-0E110102 - 32 -...
  • Page 38 GM8802C-E Compact Transmitter GM8802C-0E110102 - 33 -...
  • Page 39 GM8802C-E Compact Transmitter 4.4 Log Table for Parameter Calibration 1 Symbol Parameter Type Parameter Initial Value 0，0.0，0.00，0.000， Decimal Place 0.0000 Min. Scale 1，2，5，10，20，50 Division ≤Min.scale division × Max. Capacity 10000 30000 Sensitivity of 1，2，3 2mV/V Load Cell Millivolt value Zero position...

  • Page 40: Working Parameters Setting

    GM8802C-E Compact Transmitter 4.5 Table for Parameter Calibration 2 5 Working Parameters Setting 5.1 Parameter Setting Method Parameter Desired value Date Remark Decimal Place Min. Scale Division Sensitivity of Load Cell Max. Capacity GM8802C-0E110102 - 35 -...
  • Page 41 GM8802C-E Compact Transmitter GM8802C-0E110102 - 36 -...
  • Page 42 GM8802C-E Compact Transmitter GM8802C-0E110102 - 37 -...
  • Page 43 GM8802C-E Compact Transmitter 1. Press to select a desired item among sibling items; 2. Press to enter the screen for setting working GM8802C-0E110102 - 38 -...
  • Page 44 GM8802C-E Compact Transmitter parameters, confirm then exit. Press to return to last item; 3. Press to select a desired parameter value; 4. Pls refer to appendix 1 for detail descriptions of parameters. GM8802C-0E110102 - 39 -...
  • Page 45 GM8802C-E Compact Transmitter Descriptions of Working Parameters GM8802C-0E110102 - 40 -...

  • Page 46: Operation

    After the self-check, the GM8802C-E transmitter will change the weight signal into the standard analog signal, OUT indicator light lights up. The OFL indicator light lights up when the measurement signal is over the largest span or the input signal is overflow.

  • Page 47: Zeroing Operation

    GM8802C-E Compact Transmitter flashes at the same time. After the self-check, GM8891C enter normal working status, main-display displays current weight value, the “ZERO” indicator light lights up if the current weight value is within 0±1/4d ; the” STAB” indicator light lights up if the change of current weight value is within “Stability criterion range”.
  • Page 48 GM8802C-E Compact Transmitter displays current weight value, press display the corresponding analog output value ( mA or voltage) of the current weight as well as “mA/V” indicator light lights up. Then press again to return to display the current weight value as well as “mA/V”...

  • Page 49: Connected With Pc

    GM8802C-E Compact Transmitter 6.3 Connected with PC GM8802C-E transmitter and PC can be connected with each other through our special communicating cable(the fixed Baud rate is 19200). Operating GM8802C-E transmitter through our special software in PLC, and the concrete operation steps are identical with...

  • Page 50: Common Problems

    GM8802C-E Compact Transmitter Common Problems GM8802C-E transmitter gives prompts for various errors and warnings. When the warning appears, the main display of GM8891C indicator will display the warning information, and then automatically return to its original status after stop for some time. The detail information is as follows: 1)．“OVER”...
  • Page 51 GM8802C-E Compact Transmitter b) Check the weighing hopper or platform for materials and remove them. 2)．“UNDER” The output from the load cell is too ┅┅┅ low during zero calibration. Connection error of load cell, please check the connection of load cell...
  • Page 52 GM8802C-E Compact Transmitter error of load cell The heavy on the weighing platform is overweight and beyond the maximum range of conveying system The weighing platform is too light to measure by GM8802C-E. Error in connection with load cell and the possible cause is looseness.
  • Page 53 GM8802C-E Compact Transmitter for example: At the time of calibration, the entered maximum capacity = 0 or > 10000d. At the time of gain calibration, the entered gain > maximum capacity. 5)． The display will be unstable for field vibration, so please check the filtering parameter and properly increase it.

  • Page 54: Dimensions

    GM8802C-E Compact Transmitter 8 Dimensions GM8802C-0E110102 - 49 -...

  • Page 55: Appendix

    GM8802C-E Compact Transmitter 9 Appendix P a r a m e t e r I n i t i a D e s c r i p t i o n s ON/OFF Automatic zeroing when powered Zeroing range (01%～99% of Max. Capacity）...
  • Page 56 GM8802C-E Compact Transmitter GM8802C-0E110102 - 51 -...

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