Vishay G4 Technical Manual
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Vishay G4 Technical Manual

Multi channel weighing instrument
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GB
G4 Multi Channel
Weighing Instrument
Program version 1.7.0.0
Technical Manual
PM/DT/HE types

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Summary of Contents for Vishay G4

  • Page 1 G4 Multi Channel Weighing Instrument Program version 1.7.0.0 Technical Manual PM/DT/HE types...

  • Page 3: Table Of Contents

    Contents Batch report printing ......5-9 Introduction Main menu ........5-9 General ..........1-1 Level supervision ......5-11 Functions .......... 1-2 Setpoint function ......5-12 Maintenance ........1-4 Use of inputs and outputs ....5-13 Safety information ......1-4 Filter function ......... 5-13 Technical data ........

  • Page 4: Intended Use

    INTENDED USE The G4 Instrument family are multi channel measuring and control devices intended for industrial systems. Its basic function is to convert the signals from transducers to useful information. Transducer excitation is included as well as parameter controlled signal processing, indication of output levels, error supervision and operation of optional external equipment.

  • Page 5: Introduction

    24 V DC or 110/230 V AC powers the G4 Instrument. All input and output signals are galvanically isolated from the power supply by operational insulation.

  • Page 6: Functions

    Communication. The G4 Instrument utilizes the serial interface, Ethernet and a fieldbus interface for communication with control computer. The serial interface consists of a RS-232 (COM1) connection and a RS-485/RS-422 (COM2) connection. COM2 can be used with 2- or 4-wire connection.
  • Page 7 G4 Multi Channel Weighing Instrument Instrument modes. In normal operation mode the G4 Instrument is presenting the measurement values on the front panel graphical display. One or more weighing channels can be shown simultaneously. The user can configure the display via set-up parameters.

  • Page 8: Maintenance

    Technical Manual Maintenance The G4 instrument needs no maintenance, performed by the end-user. Any service or repair work must be performed by qualified personnel. Contact your supplier. Cleaning Before cleaning the G4, break the power connection to the instrument. Use a soft cloth to clean the exterior of the instrument. For cleaning the instrument front panel, a soft, damp, cloth may be used.

  • Page 9: Technical Data

    G4 Multi Channel Weighing Instrument Technical data Enclosure PM - Panel mount DT – Desktop HE – Harsh types Environment Enclosure Aluminium housing, Aluminium housing, Stainless steel housing, design plastic panel plastic panel plastic panel Dimensions See figure See figure...
  • Page 10 Technical Manual PM -Panel mount enclosure outlines and panel cutout. DT -Desktop enclosure outlines HE - Harsh environment enclosure outlines...
  • Page 11 G4 Multi Channel Weighing Instrument Module type CPU module RTC backup battery Manufacturer Type Lithium battery Panasonic-BSG CR2032 CR2032 3V GP Batteries CR2032 Varta CR2032 (V) COM1 (RS232) and For process data and control or printout data to a connected printer.
  • Page 12 Technical Manual AC SUPPLY Module type Power supply module Input voltage 110-240 V~ +10% -15% including fluctuations, 50/60 Hz, Impulse withstand (overvoltage) category II of IEC 60364-4-443 Output voltage 24 V output 0.1 A WF IN / WF IN2 Module type Weight/Force input module Max.
  • Page 13 G4 Multi Channel Weighing Instrument HS WF2 Module type High Speed Weight/Force input module Max. # of transducers 4 (350 ohm) per channel Excitation voltage: 10 VDC A/D conversion: 20 kHz, 16 000000 units (24 bits) Input range +/- 4.5 mV/V 12.5 ...
  • Page 14 Technical Manual AOUT1 / AOUT4 Module type Analog output module Number of channels 1 or 4 channels, separately isolated by operational insulation Resolution 65000 units, 16 bits Voltage output 0 – 10 V, -10 – 10 V, > 1 kohm load Current output 4 –...
  • Page 15 G4 Multi Channel Weighing Instrument DeviceNet Module type DeviceNet fieldbus adaptor Connector 5 pin male connector. Baudrate 125, 250, 500 kbps or Auto. Set by parameter. Address 0 – 63, set by parameter Fieldbus data 16 bytes from fieldbus to instrument.

  • Page 16: Ordering Information

    Software (note 1) (No code specified) Standard Weighing Program Standard Weighing Program Standard Force Program Special Program (note 2) Example: G4-PM-0-4-8-0-0-0-0-D-W  G4 instrument (G4)  Panel mount (PM)  No fieldbus (0)  Slot 1 = WF IN2 (4) ...
  • Page 17 G4 Multi Channel Weighing Instrument Separate modules Spec.no Module type Module name 110 544 CPU CPU unit 110 546 HS WF2 High speed dual Weight/Force input module 110 547 WF IN Single Weight/Force input module 110 548 WF IN2 Dual Weight/Force input module...
  • Page 18 Technical Manual 1-14...

  • Page 19: Installation

    G4 Multi Channel Weighing Instrument 2. Installation Mechanical installation See chapter ‘Introduction – Technical data’ for references to PM, DT and HE mechanical measures: outer extents, body extents and panel cutout (PM). PM type instrument: Make sure the panel thickness meets the specification and that there is room enough behind the panel for the instrument and the connected cables (minimum 200 mm).

  • Page 20: Electrical Installation

    Technical Manual Electrical installation The field wiring of the instrument shall be suitable to the environment (e.g. chemically) in the end-user application. Mains cables shall be separated and routed away from SELV or SELV-E field wiring. For DT and HE instruments UL Listed and KAM cord type flexible cables shall be used. The cable diameters must be selected in accordance with the strain relief specification.

  • Page 21: Cpu Unit

    Connections are made to terminals 1 – 5. Shielded cable must be used. Connect shield to terminal 6. The communication lines must be terminated in both ends. If G4 is connected at the end of the communication line switches must be set as: 2-wire termination: Both T2 ON, both R2 OFF.
  • Page 22 Technical Manual Field Bus Slot for optional Fieldbus interface Profibus DP-V1 and DeviceNet are available. See section Profibus-DP Fieldbus Adaptor or DeviceNet Fieldbus Adaptor later in this chapter for details. Connector for USB device(s). This port has no operational insulation and should be considered as a SELV/SELV-E circuit.

  • Page 23: Dc Supply 24 V

    For other markets an IEC 60127 T type fuse rated 4A may also be used. 24 V Terminals 1, 2 and 3. The G4 instrument should be powered by 24 V connected according to the diagram below. To achieve functional grounding, terminal 3 should be connected to ground.

  • Page 24: Ac Supply

    Technical Manual AC SUPPLY – 110-240 V Power supply unit Mains supply cable shall be separated and routed away from SELV or SELV-E field wiring. The branch circuit protection in the building installation must be rated maximum 16 A for the instrument, where AC SUPPLY module is mounted. Remove power before removing the module from the instrument.

  • Page 25: Wf In, Wf In2 And Hs Wf2

    14. In WF IN and WF IN2 the shield terminals are internally connected to the G4 housing, which is internally connected to earth via the power supply connector pin 3 (shield). The shield shall not be connected at any other point.
  • Page 26 Technical Manual 4-wire connection Transducer input, ch. 2 Exc.+ Exc+ Exc.- Sign.+ Sense+ Sign.- Transducer Exc- Sense- Sign+ Sign- Shield Junction box 6-wire connection Transducer input, ch. 1 Exc.+ Exc+ Exc.- Sign.+ Sense+ Sign.- Transducer Exc- Sense- Exc.+ Exc.- Sign+ Sign.+ Sign.- Transducer...
  • Page 27 Digital inputs Terminals 6 – 9 and terminal 5 (ICom) as a common connection. Four digital inputs are provided, with functions that can be set in the G4 set-up. External sourcing (24 V ) from the instrument power supply (max. 100 mA) or from a separate DC supply must be used.

  • Page 28: Aout1 And Aout4

    Technical Manual AOUT1 and AOUT4 The voltage levels on connectors of I/O modules shall not exceed hazardous voltage levels of 30 Vrms, 42.4 Vpeak or 60 Vdc under normal conditions. In wet locations these voltage levels shall not exceed 16 Vrms, 22.6 Vpeak or 35 Vdc.

  • Page 29: Dio8

    G4 Multi Channel Weighing Instrument DIO8 The voltage levels on connectors of I/O modules shall not exceed hazardous voltage levels of 30 Vrms, 42.4 Vpeak or 60 Vdc under normal conditions. In wet locations these voltage levels shall not exceed 16 Vrms, 22.6 Vpeak or 35 Vdc.

  • Page 30: Profibus-Dp Fieldbus Adaptor

    Technical Manual Profibus-DP Fieldbus Adaptor Profibus module front view (1) Operation mode LED. (2) Status LED. (3) Profibus connector. PROFIBUS DP-V1 Operation mode LED State Indication Not online / No power Green On-line, data exchange Flashing Green On-line, clear Flashing Red (1 flash) Parameterization error Flashing Red (2 flashes) Profibus configuration error...
  • Page 31 For reliable fieldbus function, line termination must be arranged in both ends of the transmission line. For a G4 instrument, at the end of the cable, a connector with line termination should be used. For all other G4 Instruments connection without line termination should be used.

  • Page 32: Devicenet Fieldbus Adaptor

    Technical Manual DeviceNet Fieldbus Adaptor DeviceNet module front view (1) Network Status LED. (2) Module Status LED. (3) DeviceNet connector. DeviceNet (Pin 1) Network Status LED State Indication Not online / No power Green On-line, one or more connections are established Flashing Green (1 Hz) On-line, no connections established Critical link failure...
  • Page 33 For reliable fieldbus function, line termination must be arranged in both ends of the transmission line. For a G4 Instrument placed at the end of the line, terminate line by placing a 121-ohm resistor between CAN L (pin 2) and CAN H (pin 4).

  • Page 34: Front Panel

    A brief description of these keys is given in the table below. Front panel of the G4 instrument with color touch display, five function keys below the display, six application specific keys, numerical keypad, joystick keypad (arrow keys), Esc, Alt, Backspace, Delete, Tab and ENTER keys.
  • Page 35 G4 Multi Channel Weighing Instrument Name Function TARE Taring, i.e. entry of the gross weight as auto tare value and display of net weight zero. Depending on actual setting taring may be prevented if ‘Motion’ is displayed. Note that a specific scale must be selected since the instrument can have multiple scales connected.
  • Page 36 Technical Manual 2-18...

  • Page 37: Set-Up

    Warning: Changes done during editing of set-up parameters will affect the behavior of the instrument immediately. The user must take all necessary precautions to prevent any undesired effects in the process monitored or controlled by the G4 instrument or a connected control system.
  • Page 38 The output function e.g. if the output shall be active above or below the set level is configured here. The fourth parameter for each level is the hystereses setting. Setpoints: The G4 instrument contains 16 setpoints that are individually configurable regarding which scale it shall be connected to and which signal it shall monitor.

  • Page 39: Graphical Touch Display

    G4 Multi Channel Weighing Instrument Batching Parameters: This menu is only shown if the batching option is enabled. It contains batching settings for all scales. See the separate ‘Scale Batching Program Option’ ‘Technical Manual Supplement’ for details. Program Options: This menu contains the options that can be used. Program options are enabled using a purchased option code.
  • Page 40 Technical Manual Parameter editing This example shows the ‘General’ General parameter menu but editing is done Language English similar throughout the menu system. Instrument Name Start Mode Auto Display Mode 1 & 2 & 4 Scales To edit a parameter, select it with the Info Line 1 Mode Batching Status arrow keys to highlight it and then press...
  • Page 41 G4 Multi Channel Weighing Instrument...

  • Page 42: Menu Structure

    Technical Manual Menu structure Main Menu *Levels *Setpoints Note that Batching and Flow rate are optional. The respective parameters and *Preset Tare *Accumulated Weights menus are only shown when the program option is enabled. *Batched Weights *Clock Set-up *Parameter Set-up *menu *System Information *Maintenance...
  • Page 43 G4 Multi Channel Weighing Instrument (Previous page) Parameter Set-up System Information Maintenance Network Configuration *General *Diagnostics *IP Configuration Information on *Hardware Config. *File Handling *Server Configuration serial numbers, *Calibration *Create Backup program versions, *Communication *Restore Backup network status and *Level Supervision...
  • Page 44 Technical Manual (Previous page) Batching Parameters Program Options *Scale 1 Batching Params. 01: Flow rate 02: Scale batching *Scale 2 Batching Params. *Scale 3 Batching Params. *Scale 4 Batching Params. *Scale 5 Batching Params. *Scale 6 Batching Params. *Scale 7 Batching Params. *Scale 8 Batching Params.

  • Page 45: Parameters

    G4 Multi Channel Weighing Instrument Parameters On the following pages a survey of all parameters is presented. The parameters are divided in groups following the menu they belong to. For choice parameters the available choices are given. For numerical parameters, a value range is given.
  • Page 46 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. Display Mode 1 Scale Defines the different weight display screens that can be 2 Scales displayed on the graphical display. 4 Scales 1 Scale: Only the 1 Scale display is shown. Operator 1 &...
  • Page 47 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. Date Format YYYY-MM-DD Defines the date format. YYYY-DD-MM YYYY: = year. MM: = month. DD: = day. DD-MM-YYYY MM/DD/YYYY <YYYY-MM-DD> Time Format 12 h Defines the time format.
  • Page 48 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. Operator Lock Off: Operator lock is not activated. On: Operator lock is activated, preventing unauthorized <Off> access to the instrument. See chapter ‘Operation – Security locks'. Operator Code Range: Defines the valid code for Operator lock. 1 - 9999 If ‘Set-up lock’...
  • Page 49 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. Menu ‘Hardware config.’ Fieldbus Not In Use This parameter defines what type of fieldbus that will be Profibus used in the CPU. DeviceNet Not In Use: The fieldbus is not used regardless of any <Not In Use>...
  • Page 50 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. Slot 2 Module Type < No module > This parameter defines what type of I/O- module is installed in slot 2. See ‘Slot 1 Module type’ for details on parameter values. Slot 2, ch 1 Scale no <Not in use>...
  • Page 51 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. Slot 4, ch 2 Scale no <Not in use> This parameter defines which scale (1 – 8) that channel 2 in slot 4 will be connected to. Each scale may only be assigned once.
  • Page 52 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. Menu ‘Scale 1’ The Calibration menu contains up to 8 sub menus, one for each installed/used scale. The parameters are the same for all 8 scale menus. Here only scale 1 parameters are shown.
  • Page 53 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. 1:Capacity Range: Nominal range of scale. 0.5 to 999999 Capacity / Resolution = Number of divisions. Unit: Measurem. unit <500> 1:HSWF Update Rate 12.5 Hz Defines the update rate for the measuring channel...
  • Page 54 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. 1:No Motion Delay Range: Delay in seconds from detection of stable weight 0 to 10.0 until the Motion status goes off. Unit: s <1.0> 1:Motion Check Off: Only zero adjustment is inhibited during motion. On: Inhibits zero adjustment, taring, and printing during <Off>...
  • Page 55 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. 1:Zero Tracking With this parameter automatic zero-tracking can be selected, or a combination of automatic zero-tracking and automatic zero On+AutoZero setting. <Off> Off: No zero tracking. On: Zero tracking active.
  • Page 56 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. 1:Flow Calculation Used to turn on and off the flow rate calculations. On: Flow rate calculations are performed. <Off> Off: Flow rate calculations are not performed. Note: the flow rate calculation is a program option and flow rate parameters are only shown if the Flow rate program option code is entered.
  • Page 57 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. 1:Auto Derivation Time The derivation time can be entered manually or calculated automatically by the instrument. <On> Off: Manual entering of derivation time. On: Automatic calculation of derivation time.
  • Page 58 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. Menu ‘Scale 1 Calibration’ The Scale 1 Calibration menu is found after the last parameter in menu Scale. Here only scale 1 menu is shown. Note that the scale number is shown as a prefix to the parameter name, here ‘1:’...
  • Page 59 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. 1:Rated Output 1 Range: Defines the rated output signal for transducer 1. 0 to 9.99999 The value is specified in the transducer data sheet Unit: mV/V for transducer 1.
  • Page 60 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. Deadweight calibration related parameters Used when the scale is calibrated with weights. The instrument automatically reads the corresponding transducer signals. 1:No of Calibration Points Range: Number of calibration points. 2 to 6 <2>...
  • Page 61 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. 1:Transd. Signal P1 Range: +/–9.99999 In this parameter, the transducer signal in Unit: mV/V the lowest calibration point is displayed, <0.00000> but the value cannot be edited.
  • Page 62 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. Table calibration related parameters Used when the scale is calibrated with recorded values from a previous calibration, normally a deadweight calibration. 1:No of Calibration Points Range: Number of calibration points. 2 to 6 <2>...
  • Page 63 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. 1:Transd. Signal P1 Range: +/–9.99999 In this parameter, enter the recorded value for the Unit: mV/V transducer signal in the first calibration point. <0.00000> 1:Transd. Signal P2 Range: +/–9.99999...
  • Page 64 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. Menu ‘Serial Com.’ Modbus Address Range: 1 to 247 Defines the instrument Modbus address. <1> COM1:Mode Not in use Defines use of serial port Com 1. Modbus Slave Not in use: The port is not used. Printer Modbus Slave: The port is used for control unit communication.
  • Page 65 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. COM1:Floating Point Format Modicon Float Sets how the Modbus slave should handle floating point values. Float Modicon Float: Modicon floating point format. < Modicon Float > Float: IEEE 32 bit floating point format See chapter ‘Communication’...
  • Page 66 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. COM1:Print Pos. 3 Not in use Specifies the information that should be printed in printer Display Weight position 3 (lower left field). This parameter controls weight Preset Tare printing but not batching printouts. Date/Time Not in use: Printer position 3 is left empty.
  • Page 67 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. COM2:Mode Not in use Defines use of serial port Com 2. Modbus Slave Not in use: The port is not used. Printer Modbus Slave: The port is used for control unit communication.
  • Page 68 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. COM2:Print Pos. 1 Not in use Specifies the information that should be printed in printer Display Weight position 1 (upper left field). This parameter controls weight Preset Tare printing but not batching printouts. Date/Time Not in use: Printer position 1 is left empty.
  • Page 69 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. COM2:Print Pos. 4 Not in use Specifies the information that should be printed in printer Display Weight position 4 (lower right field). This parameter controls weight Preset Tare printing but not batching printouts.
  • Page 70 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. Menu ‘Modbus TCP Slave’ Modbus TCP Slave Enables/disables the Modbus TCP Slave. On: Modbus TCP Slave enabled. <Off> Off: Modbus TCP Slave disabled. Floating Point Format Modicon Float Sets how the Modbus TCP Slave should handle floating Float point values.
  • Page 71 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. Menu ‘Fieldbus’ Note: The Fieldbus menu is not shown if parameter ‘Fieldbus‘ (in Hardware Config menu) is set to ‘Not In Use’. See chapter ‘Communication  Fieldbus interface’ for more details on fieldbus configuration and usage.
  • Page 72 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. Data Block 1 Type Not In Use Sets the data source for Data Block 1. Gross Weight Not In Use: The memory area corresponding to this data block Net Weight is not updated.
  • Page 73 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. Data Block 1 Scale Selects the source scale for Data Block 1. 1: The Data Block uses data from scale no 1. 2: The Data Block uses data from scale no 2.
  • Page 74 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. Menus ‘Level 1’ – ‘Level 32’ NOTE: There are 32 levels each with the following four parameters described below. Level 1 Source ( - Level 32 Source) Not in use Defines the signal to be supervised by the level.
  • Page 75 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. Menu ‘Setpoints’ NOTE: There are 16 setpoints each with the following two parameters described below. Setpoint 1 Source ( - Setpoint 16 Source) Not in use Defines the signal to be supervised by the setpoint.
  • Page 76 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. Menus ‘Inputs Slot 1’ - ‘Inputs Slot 6’ NOTE: There are six possible sub menus, one for each slot. In each slot sub menu there are up to 8 possible inputs named 11 to 18 for slot 1, 21 to 28 for slot 2 and so on.
  • Page 77 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. Menus ‘Outputs Slot 1’ - ‘Outputs Slot 6’ NOTE: There are six possible sub menus, one for each slot. In each slot sub menu there are up to 8 possible outputs named 11 to 18 for slot 1, 21 to 28 for slot 2 and so on.
  • Page 78 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. Output 11 Level (- Output 18 Level) 1: Level number 1 uses the output. 2: Level number 2 uses the output. 3: Level number 3 uses the output. …. …. 30: Level number 30 uses the output.
  • Page 79 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. Menu ‘Analog Outputs’ NOTE: There are 4 possible analog outputs each with the 8 parameters described below. If the selected analog output module is AOUT4 there will be parameters for four analog outputs displayed, if the AOUT1 is selected only the parameters for the first analog output (shown below) will be shown.
  • Page 80 Technical Manual Range/Alternatives Explanation and <default value> result of alternatives. AOUT 1 Range Low (- AOUT 4 Range Low) Range: Defines the weight/flow rate value that should +/–999999 give the lowest output (0 V / 0 mA / 4 mA) at this Unit: Analog output.
  • Page 81 G4 Multi Channel Weighing Instrument Range/Alternatives Explanation and <default value> result of alternatives. Menu ‘Batching Parameters’ Batching parameters will only be shown if the Scale Batching Program Option is enabled. See the ‘Scale Batching Program Option’ ‘Technical Manual Supplement’ for a description of the Batching functionality and parameters.

  • Page 82: Program Options

    Technical Manual Program options A program option is a program functionality that must be purchased separately. It is not available until a valid option code is entered. An option code can be purchased at the same time as the instrument or separately at a later occasion. The program option code is directly related to the individual S/N of the CPU module.

  • Page 83: Calibration

    G4 Multi Channel Weighing Instrument 4. Calibration General When measuring with G4 Instrument, the transducer output signal, corresponding to the transducer load, is converted to a weight value. The conversion is controlled by several parameters with values defined during calibration of the instrument.

  • Page 84: Common Parameters

    Technical Manual If the weight indicator must be replaced, a table calibration of the replacement unit can be performed, with recorded values from an earlier calibration. To get the best accuracy, a deadweight calibration with known weights to at least 2/3 of the measuring capacity, should be performed.
  • Page 85 G4 Multi Channel Weighing Instrument Number of scale divisions The number of scale divisions (div.) for a scale = ‘Capacity’ / ‘Resolution’. To get correct and stable weight display, parameter ‘Resolution’ should be set so that the number of scale divisions with the selected ‘Capacity’ is less than 6 000 (10 000).

  • Page 86: Data Sheet Calibration

    0.1 % can be obtained. The accuracy of the G4 Instrument itself is 0.005 % (1-2 years calibration period). It is essential that no external forces influence the scale installation. If fixed support points are included in the scale, the load must be evenly distributed on transducers and fixed supports.

  • Page 87: Deadweight Calibration

    G4 Multi Channel Weighing Instrument Table calibration Table calibration can be used to copy recorded values from a previous deadweight calibration of the weighing equipment into a replacement instrument. This is performed by entry of recorded weight values and corresponding transducer signal values into the instrument.
  • Page 88 Technical Manual Value Cal. P2, Value Cal. P3 etc. The scale should be loaded with known weights. These parameters show the load according to the previous calibration and the parameter values should be changed to the value of the known weights. As a parameter value is stored, the instrument will also store the corresponding transducer signal value for that calibration point.

  • Page 89: Operation

    G4 Multi Channel Weighing Instrument 5. Operation General G4 instrument with strain gauge transducers is designed mainly for weighing and batching purposes. The measurement values are displayed at the front panel, and can also be transmitted to a master computer/PLC.
  • Page 90 Technical Manual Display alternatives by normal operation In the weight display it is possible to view weight information from one or more scales. It is also possible to select which scales that shall be displayed on the color touch display. With parameter ‘Display modes’ it is possible to select what combinations of the three weight display modes that can be selected by the operator.
  • Page 91 G4 Multi Channel Weighing Instrument 2006-09-24 19:07 1:Baking powder Gross 103.2 kg 2006-09-24 19:07 Scale: 2 Motion 003.4 kg Batch ------ P.Tare Levels ------ Two scales weight display mode. 2006-09-24 19:07 102.1 kg 1:Baking powder Gross Zero Scale: 2 000.0 kg...

  • Page 92: Security Locks

    Selection of scale no corresponding to the digit. Security locks In the G4 instrument two security locks are included to prevent unauthorized access to the instrument via the panel keys. The locks can be activated by parameters in menu ‘Main menu/Parameter set-up/General’.

  • Page 93: Taring

    The code for the Set-up lock will open both Set-up lock and Operator lock. Taring Taring means storing of a tare value and that the G4 instrument switches over to display of net weight. The net weight being the gross weight minus the tare value.

  • Page 94: Gross/Net Operation

    Technical Manual Gross/Net operation At normal operation the G4 instrument presents a numerical weight value at the display, either gross weight or net weight. When net weight is displayed the text ‘Net’ is shown on screen. Toggling between display of gross weight and net weight can be performed by pressing the GROSS/NET key.

  • Page 95: Motion

    G4 Multi Channel Weighing Instrument Zero-tracking/Automatic zero setting In the instrument the functions zero-tracking and automatic zero setting can be enabled. Zero-tracking gives a continuous zero setting by slow changes in zero weight. The automatic zero setting performs zeroing of small negative gross weights.

  • Page 96: Weight Printing

    A printer can be used to print the displayed weight or the displayed flow rate. It can also be used to print batching report if the Scale Batching Program Option is enabled. The printer must be connected to one of the G4 Instrument serial communication ports and the communication parameters must be correctly set.

  • Page 97: Batch Report Printing

    G4 Multi Channel Weighing Instrument Weight accumulation The print button and serial communication printing function is also used to accumulate the displayed weight. See also the description of accumulated weights below under Main menu. Accumulation is done even if no printer is set-up or connected.
  • Page 98 Clock Set-up: Used to set the instrument clock and date. Time and Date formats are set-up with parameters trough ‘Parameter set-up’ menu. Parameter Set-up: Access to the G4 instrument parameter set-up menu system. See chapter ‘Set-up’ for more details on setup.

  • Page 99: Level Supervision

    G4 Multi Channel Weighing Instrument Level supervision The G4 instrument contains 32 supervision Levels that can be used to supervise defined signals in the instrument. Digital outputs can be connected as outputs for the Levels. For each Level, supervised scale, hystereses and operation mode for the digital output is controlled by set-up parameters.

  • Page 100: Setpoint Function

    Technical Manual Level status Actual status of the Levels (input signal above or below Level) can be read via communication and shown at the display (the four first for each scale). The level status includes the influence from hystereses, but it does not show the status of any digital outputs, connected to the Levels.

  • Page 101: Use Of Inputs And Outputs

    G4 Multi Channel Weighing Instrument Use of inputs and outputs Internal I/O’s are included on some of the I/O-modules that the G4 instrument can be equipped with. Different module types have different number of inputs and outputs. A DIO8 module have 8 inputs and 8 outputs while the weight conversion modules HS WF2, WF IN and WF IN2 each have 4 inputs and 2 outputs.
  • Page 102 Technical Manual WF IN / WF IN2 module filter bandwidth Update - 3 dB frequency - 90 dB frequency rate Filtered Unfiltered Filtered Unfiltered 300 Hz 14 Hz 22 Hz 75 Hz 150 Hz 150 Hz 7.6 Hz 14 Hz 37 Hz 75 Hz 75 Hz...

  • Page 103: Flow Rate

    Flow rate General The G4 instrument includes a program option for flow measurement. The option can be activated by an individual code for each instrument. The code can be ordered from your supplier. The program option code should be entered in the ‘Program Options’...
  • Page 104 Technical Manual Setting of flow rate unit Parameter ‘Flow Rate Unit’ defines the engineering unit that should be used for the flow rate value and for related set-up parameters. If the flow rate unit exceeds 4 characters then it will be represented as ”/s”, ”/min”,”/h”, ”*/mi”...
  • Page 105 G4 Multi Channel Weighing Instrument Flow rate update time The flow rate value is updated as shown in the table below. At start-up the accuracy of the flow rate will not gain full precision until after a full derivation time period.
  • Page 106 Technical Manual Hints and examples First of all it is important to have a good weighing application where you use the load cells in a good way to get high resolution and accuracy. It is possible to use long filter time in the instrument to get a higher resolution and accuracy. To get rid of noise it’s important to have as high signal from the load cells as possible.

  • Page 107: Communication

    Modbus RTU Slave General All the G4 units connected to the network can listen to what is transmitted in the network, but only one unit at a time may transmit. A time-sharing principle is needed to allow communication in both directions (half duplex).

  • Page 108: Modbus Tcp Slave

    The instrument will as default be given the address 1. If more than one instrument is used in a network, each G4 instrument must be given a unique address in parameter ‘Modbus address’ (in ‘Parameter set-up’, menu ‘Communication’, sub menu ‘Serial Com.’).

  • Page 109: External I/O

    WAGO I/O system communicate over Ethernet using the Modbus TCP protocol. The G4 CPU module can handle both 10 and 100 Mbit/s networks. It is possible to use switches, hubs etc in the network. Note that the communication performance will be affected by the network speed, network load, scale update rate etc.

  • Page 110: Ftp Server

    Technical Manual Ftp Server The G4 instrument contains an ftp server that can be used to transfer files between the instrument and an external computer using an ftp client. To connect to the instrument the ftp client must login to the instrument with the user ID ‘G4User’ and the password ‘1937’...
  • Page 111 G4 Multi Channel Weighing Instrument General registers The G4 instrument has a number of Modicon 'Holding Registers' (registers 4XXXX ... ). The Modbus function 03 'Read Holding Registers' should be used to read these registers and the Modbus function 05 'Preset Single Register' or 16 'Preset Multiple Registers' should be used to write to the registers.
  • Page 112 Technical Manual Data type: Data type: float Explanation Integer (2 reg./value) 40062 (1 reg) 44062 Scale 3: Error code 40063 (1 reg) 44064 Scale 3: Status 40064 (3 reg) 44066 Scale 3: Gross weight 40067 (3 reg) 44068 Scale 3: Net weight 40070 (3 reg) 44070 Scale 3: Flow rate...
  • Page 113 G4 Multi Channel Weighing Instrument Data type: Data type: float Explanation Integer (2 reg./value) 40132 (1 reg) 44122 Scale 8: Error code 40133 (1 reg) 44124 Scale 8: Status 40134 (3 reg) 44126 Scale 8: Gross weight 40137 (3 reg)
  • Page 114 Technical Manual Data type: Data type: float Explanation Integer (2 reg./value) 42010 (3 reg) 46010 Scale 1: Preset tare value 42013 (3 reg) 46012 Scale 2: Preset tare value 42016 (3 reg) 46014 Scale 3: Preset tare value 42019 (3 reg) 46016 Scale 4: Preset tare value 42022 (3 reg)
  • Page 115 G4 Multi Channel Weighing Instrument Data type: Data type: float Explanation Integer (2 reg./value) 42106 (3 reg) 46074 Level 25 value 42109 (3 reg) 46076 Level 26 value 42112 (3 reg) 46078 Level 27 value 42115 (3 reg) 46080 Level 28 value...
  • Page 116 Technical Manual Accumulated weight registers Accumulated weights are updated when a print command is issued. The accumulated values can also be read in the ‘Accumulated Weights’ menu in the ‘Main menu’. In this menu it is also possible to zero or set the values. There is also a set of registers that contain the Batched Weights, which are accumulated weights automatically calculated during batching.

  • Page 117: Instrument Type

    G4 Multi Channel Weighing Instrument Instrument type This register holds the type of the instrument. For G4 Multi Channel Weighing Instrument this value is 4001. Standard program major and minor version This registers holds the major and minor version for a standard program.
  • Page 118 Technical Manual Instrument state This register contains the state of the G4 instrument unit. Code Description ‘Starting up’ state. The instrument is starting up after a reset or power on. ‘Wait for start’ state. The instrument is waiting for a start command to go in process.
  • Page 119 G4 Multi Channel Weighing Instrument Instrument status This register holds the overall status for the instrument Bits set to 1 in this register have the following meaning: Bit no Function Comment Remote operation ‘1’ = On ‘0’ = Off Program reset The bit is set each time the program starts, and it indicates that volatile data is lost.
  • Page 120 Technical Manual Scale X: Status Status for a scale. Bits set to 1 in this register have the following meaning: Bit no Function Comment Net weight > INT size The net weight in ‘scaled integer’ format does not fit in one register. (See description of data representation.) Gross weight >...

  • Page 121: Analog Output Value

    G4 Multi Channel Weighing Instrument Scale X: Gross weight This register holds the gross weight for a scale. The weight should not be read alone because the status and error codes are stored in other registers. The weight is only valid when the register ‘Scale X:Error code’...

  • Page 122: Status Of Inputs 31 - 38

    Technical Manual Status of inputs 31-38, 41-48 Bits set to 1 in this register have the following meaning: Bit no Function Bit no Function Digital input 31 activated. Digital input 41 activated. Digital input 32 activated. Digital input 42 activated. Digital input 33 activated.

  • Page 123: Status Of Outputs 11 - 18

    G4 Multi Channel Weighing Instrument Status of outputs 11-18, 21-28 Bits set to 1 in this register have the following meaning: Bit no Function Bit no Function Digital output 11 activated. Digital output 21 activated. Digital output 12 activated. Digital output 22 activated.

  • Page 124: Status Of Outputs 51 - 58

    Technical Manual Status of outputs 51-58, 61-68 Bits set to 1 in this register have the following meaning: Bit no Function Bit no Function Digital output 51 activated. Digital output 61 activated. Digital output 52 activated. Digital output 62 activated. Digital output 53 activated.

  • Page 125: Level Status

    G4 Multi Channel Weighing Instrument Level status 1-16 Bits set to 1 in this register have the following meaning: Bit no Function Comment Above level 1 The weight is above Level 1. Above level 2 The weight is above Level 2.
  • Page 126 Technical Manual Level status 17-32 Bits set to 1 in this register have the following meaning: Bit no Function Comment Above level 17 The weight is above Level 17. Above level 18 The weight is above Level 18. Above level 19 The weight is above Level 19.

  • Page 127: Setpoint Status

    G4 Multi Channel Weighing Instrument Setpoint status 1-8 Bits set to 1 in this register have the following meaning: Bit no Function Comment Setpoint 1 activated See description for setpoint function. Setpoint 1 cycle done See description for setpoint function.
  • Page 128 Technical Manual Setpoint status 9-16 Bits set to 1 in this register have the following meaning: Bit no Function Comment Setpoint 9 activated See description for setpoint function. Setpoint 9 cycle done See description for setpoint function. Setpoint 10 activated See description for setpoint function.
  • Page 129 G4 Multi Channel Weighing Instrument Command register As this register is read, the answer will always contain only zeros. There are a number of actions that can be activated in the instrument. The value of this register (when different from zero) will activate one of these actions, as described in below.
  • Page 130 Technical Manual Cmd Action activated in Description instrument Scale 3: Set to zero Used to set the gross weight to zero. Scale 3: Select gross mode Scale 3: Select net mode Scale 3: Weight display Show weight on the display. Scale 3: Flow rate display Show flow rate on the display.
  • Page 131 G4 Multi Channel Weighing Instrument Cmd Action activated in Description instrument Scale 7: Select net mode Scale 7: Weight display Show weight on the display. Scale 7: Flow rate display Show flow rate on the display. Scale 7: Print command...
  • Page 132 Technical Manual Cmd Action activated in Description instrument Deactivate setpoint 11 See description of setpoint function. Activate setpoint 12 See description of setpoint function. Deactivate setpoint 12 See description of setpoint function. Activate setpoint 13 See description of setpoint function. Deactivate setpoint 13 See description of setpoint function.
  • Page 133 G4 Multi Channel Weighing Instrument Scale X: Preset tare value This registers is used to read and write a new preset tare for a scale. Level X value These registers are used to read and write levels that are supervised by the instrument.
  • Page 134 Technical Manual Data representation Data sent to and from the instrument uses 16 bit holding registers (40XXX) and can use different formats for flexibility. Integer Unsigned integer (1 modbus register) Values stored in one modbus register as an unsigned integer (16 bit number without decimals).
  • Page 135 G4 Multi Channel Weighing Instrument Float values The type of float values used in the communication is selected in the set-up for the different communication interfaces. Values stored as standard IEEE 32 bit float values. Each value has two registers assigned to it.
  • Page 136 Technical Manual Exception responses When the master sends a query to a slave it expects a normal response (as described earlier). One of the following three events occurs after a query from the master. 1. Normal response. The slave has received the query without communication error and can handle the query normally.
  • Page 137 G4 Multi Channel Weighing Instrument Supported Modbus functions Function Description Reads the state of discrete outputs (0X references, coils). Only implemented because some 'masters' use this function Read Coil Status to initiate communication. Coil range: 1 – 16 (Max number of points to read: 16).

  • Page 138: Fieldbus Interface

    Technical Manual Fieldbus interface The optional fieldbus interface is based on a network communication module from HMS Industrial Networks. Available fieldbusses are Profibus and DeviceNet. With setup parameters the fieldbus interface is configured for the specific needs of an installation. It is possible to setup address, baud rate (if applicable to the actual fieldbus type) and mapping of the memory area in the fieldbus module that is available to the network.
  • Page 139 G4 Multi Channel Weighing Instrument Data from the fieldbus (Outputs in the master) General This 16 bytes block is mandatory, i.e. it is always mapped to the fieldbus in the instrument. Byte Contents Command Number of registers to write Start address, Read/Write...
  • Page 140 Technical Manual Byte 1: Used to define the number of registers to write. Bytes 2 and 3: Define from which register number to read or write. Bytes 4 to 15: Contains the data when writing to the instrument. Data to the fieldbus (Inputs in the master) General Data to the fieldbus are divided into two categories, one is the mandatory “base block”...
  • Page 141 G4 Multi Channel Weighing Instrument The first 32 bytes of data from the instrument to the fieldbus are mandatory. Bytes 0 and 1: Contains the actual instrument error information (the value 0 means no error). See chapter ‘Communication – Modbus protocol – Instrument error’.
  • Page 142 Technical Manual Configurable data blocks Data Blocks is used to transfer data from the Byte Contents instrument to the master. Up to 12 data Start of data block 1 blocks can be used. Each block consists of 16 bytes. The data blocks have fixed Start of data block 2 positions in memory, see list below.
  • Page 143 G4 Multi Channel Weighing Instrument Weight data block (Floating-point format) Byte Contents Offset + 0 Scale x: Error code Offset + 1 Scale x: Error code Offset + 2 Scale x: Error code Offset + 3 Scale x: Error code...
  • Page 144 Technical Manual Weight data block (Integer format) Byte Content Offset + 0 Scale x: Error code Offset + 1 Scale x: Error code Offset + 2 Scale x: Status Offset + 3 Scale x: Status Offset + 4 Scale x: Data, int Offset + 5 Scale x: Data, int Offset + 6...
  • Page 145 G4 Multi Channel Weighing Instrument Level status (Floating-point format) Byte Content Offset + 0 Level status 1 – 16 Offset + 1 Level status 1 – 16 Offset + 2 Level status 1 – 16 Offset + 3 Level status 1 – 16 Offset + 4 Level status 17 –...
  • Page 146 Technical Manual Input Status (Floating-point format) Byte Content Offset + 0 Status of inputs 11 – 18, 21 – 28 Offset + 1 Status of inputs 11 – 18, 21 – 28 Offset + 2 Status of inputs 11 – 18, 21 – 28 Offset + 3 Status of inputs 11 –...
  • Page 147 G4 Multi Channel Weighing Instrument Inp./Outp Stat (Integer format) Byte Content Offset + 0 Status of inputs 11 – 18, 21 – 28 Offset + 1 Status of inputs 11 – 18, 21 – 28 Offset + 2 Status of inputs 31 – 38, 41 – 48 Offset + 3 Status of inputs 31 –...
  • Page 148 Technical Manual AOUT1-4 Value (Floating-point format) Byte Content Offset + 0 Analog output value 1 Offset + 1 Analog output value 1 Offset + 2 Analog output value 1 Offset + 3 Analog output value 1 Offset + 4 Analog output value 2 Offset + 5 Analog output value 2 Offset + 6...
  • Page 149 G4 Multi Channel Weighing Instrument AOUT3-4 Value (Integer format) Byte Content Offset + 0 Analog output value 3, int Offset + 1 Analog output value 3, int Offset + 2 Analog output value 3, int Offset + 3 Analog output value 3, int...
  • Page 150 Technical Manual Examples Example 1: Setting ‘Level 1 Value’ to 123.5 (Writing to float value register). 1. Make sure that the previous command was not 251. Set command byte (00) to 0 if previous command was 251. 2. Set number of registers (2) to write in byte 01. 3.
  • Page 151 G4 Multi Channel Weighing Instrument Example 3: Set read window to read from Scale 4 floating point data (registers 44074 to 44085). Note that the number of registers read is always 12. 1. Make sure that the previous command was not 250.

  • Page 152: Weight Printing

    The print function is designed to work best with a 40-character printer. Displayed weight or flow rate and batching reports can be printed. The printing functionality in the G4 Instrument uses the multilingual character set known as Microsoft OEM code page 437 (US), MS-DOS code page 437, IBM character set No.
  • Page 153 G4 Multi Channel Weighing Instrument Print examples Print Pos. 1 = Date/Time Print Pos. 2 = Scale Name Print Pos. 3 = Not in use Print Pos. 4 = Display Weight Linefeeds = 2 Scale 1 Name = Ice cream...
  • Page 154 Technical Manual 6-48...

  • Page 155: Remote Access

    Configuration’ menu is the ‘Server Config’ menu found where the Web Server can be enabled (default) or disabled. Also the password can be set here. The remote access interface of the G4 instrument is intended to facilitate the set-up and maintenance work with the instrument. During e.g. commissioning it will make it possible to have the PC close to the equipment when the instrument is placed away from the equipment.

  • Page 156: Using The Remote Access

    Technical Manual Using the Remote Access To navigate in the menu system a mouse, touch pad, pointing stick etc. must be used. The keyboard cannot be used for navigation. Hovering with the mouse pointer over a selection in a menu will highlight the item and clicking will open the next menu level or allow for a parameter to be edited.

  • Page 157: Remote Access Login And Logout

    G4 Multi Channel Weighing Instrument Remote Access Login and Logout Entering the IP Address of the desired instrument in the address field of the browser will have the instrument Web Server presenting the login form, see the picture below. Login form The user ID is always ‘G4User’...
  • Page 158 Technical Manual When the correct login credentials are entered the entry screen will be displayed. This picture will show the Instrument Name (if set) or possible start up errors (serious and fatal errors). Any errors shown here must normally be corrected from the instrument and not through remote access.

  • Page 159: Remote / Local Access

    G4 Multi Channel Weighing Instrument Clicking the ‘Close the Window’ text will close the browser (if allowed by the browser). Note that the browser may save the login credentials which then are proposed as default next time the user tries to login to the same unit.

  • Page 160: Remote Set-Up

    Warning: Changes done during editing of set-up parameters will affect the behavior of the instrument immediately. The user must take all necessary precautions to prevent any undesired effects in the process monitored or controlled by the G4 instrument or a connected control system.
  • Page 161 G4 Multi Channel Weighing Instrument If the Scale Batching Program Option is used please refer to the separate batching manual for details on function and set-up: G4 Multi Channel Weighing Instrument Scale Batching Program Option Technical Manual Supplement PM/DT/HE/RM Types Note that these two publications do not describe the set-up procedure using the Remote Access.
  • Page 162 Technical Manual Parameter Set-up menu If there isn’t room for all parameters on screen, it is possible to scroll trough the list with the scroll bar at the right of the screen. Click the ‘Escape’ button (on the screen) to return to the Main Menu. The ‘Escape’ button is always used to cancel editing or moving backwards in the menu structure.
  • Page 163 G4 Multi Channel Weighing Instrument When editing a choice parameter e.g. language as in the figure, a list of available choices is show on screen with the current selection is shown in bold. To change the current selection click on the desired selection. To abort editing and keep the previous setting, click the ‘Escape’...

  • Page 164: Remote Access Maintenance

    Technical Manual Remote Access Maintenance General The Maintenance menu includes a number functions used for diagnostics and maintenance purposes. The Maintenance menu is found under the Main menu. All maintenance functions of the instrument are available from the Remote Access Interface except the ‘Program Upgrade’.
  • Page 165 The communication works correctly with the connected WAGO I/O system. External I/O: WAGO, Connected (Com.Err.) The G4 and the WAGO I/O system are connected but there is an undefined communication error. This problem may be temporary or persistent. To solve the problem: Check WAGO Fieldbus Coupler status indication LED’s.
  • Page 166 G4 Instrument configuration etc. External I/O: WAGO, Faulty There is an internal fatal error regarding external I/O. To solve the problem: Disconnect WAGO and cycle G4 Instrument power. Contact supplier if the error persists. External I/O: WAGO, Init. Error This is an internal error that might be persistent. To solve the problem: Disconnect WAGO and cycle G4 Instrument power.
  • Page 167 G4 Multi Channel Weighing Instrument Shows the status of all installed internal and external digital inputs. Internal digital inputs are numbered 11 – 68. Each row corresponds to a slot. Only the currently available inputs in each slot are shown.
  • Page 168 Technical Manual Digital Outputs Shows the status of all installed internal and external digital outputs. It is also possible to change the status of the digital outputs. Internal digital outputs are numbered 11 – 68. Each row corresponds to a slot. Only the currently available outputs in each slot are shown.
  • Page 169 G4 Multi Channel Weighing Instrument Analog Outputs Shows the output value or a possible error message for installed analog outputs. It is also possible to override the normal operation and set the output value for each analog output. To change an output value click the button marked with the output number and enter wanted value.
  • Page 170 Technical Manual File Handling menu The file handling has access to the ‘user tree’ directory structure in the instrument. The default folders are ‘InstrBackup’, ‘LogFiles’, ‘Misc’ and ‘Recipes’. The folder ‘InstrBackup’ is used as default when creating or restoring backup and the folder ‘LogFiles’...
  • Page 171 G4 Multi Channel Weighing Instrument Restore Backup Restoring a previously stored parameter backup to the instrument. Any additional information in the backup file is displayed before a backup file is restored. Backup files are fetched from the PC. Using the Restore Backup requires either a Set-up Code or an Operator Code if a lock is activated.

  • Page 172: Instrument Restart

    Technical Manual Instrument Restart With the Instrument Restart function it is possible to force the instrument to make complete restart (corresponding to a power down – power up cycle). This must be used with great caution especially if done from a remote position. The user must make sure that no hazardous situation will occur.

  • Page 173: Maintenance

    G4 Multi Channel Weighing Instrument 8. Maintenance General This chapter describes the maintenance functions when handled from the local display. The Maintenance menu includes a number functions used for diagnostics, maintenance and program upgrade purposes. The Maintenance menu is found under the Main menu.
  • Page 174 The communication works correctly with the connected WAGO I/O system. External I/O: WAGO, Connected (Com.Err.) The G4 and the WAGO I/O system are connected but there is an undefined communication error. This problem may be temporary or persistent. To solve the problem: Check WAGO Fieldbus Coupler status indication LED’s.
  • Page 175 G4 Multi Channel Weighing Instrument Fieldbus Shows the fieldbus type, address and status of the optional Fieldbus interface. It also gives the possibility to study the contents in selected parts of the instrument memory (data to and from the fieldbus master). The function is very useful for advanced fault finding in case of problems with the fieldbus communication.
  • Page 176 Technical Manual Digital Inputs Shows the status of all installed internal and external digital inputs. Internal digital inputs are numbered 11 – 68. Each row corresponds to a slot. Only the currently available inputs in each slot are shown. External I/O inputs are numbered from 101 to 228. All 128 inputs are shown regardless of how many inputs that are physically installed.
  • Page 177 G4 Multi Channel Weighing Instrument Digital Outputs Shows the status of all installed internal and external digital outputs. It is also possible to change the status of the digital outputs. Internal digital outputs are numbered 11 – 68. Each row corresponds to a slot. Only the currently available outputs in each slot are shown.

  • Page 178: File Handling

    Technical Manual Analog Outputs Shows the output value or a possible error message for installed analog outputs. It is also possible to override the normal operation and set the output value for each analog output. To change an output value press the function key marked with the output number and enter wanted value.

  • Page 179: Restore Backup

    G4 Multi Channel Weighing Instrument Restore Backup Restoring a previously stored parameter backup to the instrument. Any additional information in the backup file is displayed before a backup file is restored. Backup files can be fetched from internal memory or from a USB memory.

  • Page 180: Instrument Restart

    Technical Manual Instrument Restart With the Instrument Restart function it is possible to force the instrument to make complete restart (corresponding to a power down – power up cycle). This must be used with great caution. The user must make sure that no hazardous situation will occur. To use the Instrument Restart function requires either a Set-up Code or an Operator Code if a lock is activated.

  • Page 181: Troubleshooting

    G4 Multi Channel Weighing Instrument 9. Troubleshooting General During installation and maintenance of the G4 Instrument, the sub menus ‘System Information’ and ‘Maintenance / Diagnostics’ can be useful for solving possible problems related to I/O modules, Ethernet, Serial Communication etc.
  • Page 182 Technical Manual Weight errors The indication is either temporary or stays on until the cause is cured. Error Explanation code No error. The instrument is in ‘normal state’ and no error is detected. Instrument not in normal state. Weight is not valid. Overload Overload means that the weight exceeds the highest allowed limit that is specified in the set-up parameters ‘Overload check’...
  • Page 183 G4 Multi Channel Weighing Instrument Start-up errors These error codes can only appear during start-up. Error Explanation code Set-up data error Indicates faulty set-up. Enter set-up mode, perform the necessary editing and save the new parameter settings or use the “Set Default values”...
  • Page 184 Faulty value Value not accepted when entering a parameter from front panel or illegal data in modbus registers, when writing data to the G4 instrument. Previous command not ready The previous command is not finished. Wait until pending command is finished and send the command again.
  • Page 185 G4 Multi Channel Weighing Instrument Error Explanation code Taring not allowed (negative gross weight). Taring is not allowed at negative gross weight if parameter ‘Overload check’ is set to Unipolar. Instrument in net mode. Zero setting requires that the instrument is in gross mode. However, if you try to transmit a zero setting command while the scale is in net mode you’ll...
  • Page 186 Technical Manual Error Explanation code Command not allowed during batching The given command is not allowed during batching. E.g. it is not allowed to tare, change between gross and net display etc during batching. No batching activities in use It is not possible to start batching without any activities configured. Command not allowed during set-up It is not allowed to start batching when parameter set-up is in progress.
  • Page 187 Fieldbus command error. Command error response on fieldbus connection. Indicates that the command sent to the G4 instrument via the fieldbus connection could not be executed. Internal Timeout A timeout occurred when the program tried to access some internal resources.
  • Page 188 Technical Manual Set-up errors These errors occur only during instrument set-up from the front panel. Certain errors depend on more than one set-up parameter and it is the operator’s responsibility to locate and correct all faulty set-up parameters. Error Explanation code Weight error The weight is not valid during calibration.
  • Page 189 G4 Multi Channel Weighing Instrument Error Explanation code Zero track rate too high The zero-track rate is too high. Select a lower zero track rate. Too high transducer signal in calibration point 2 The mV/V signal in calibration point two is too high (often due to a previous, strange data sheet calibration).
  • Page 190 Technical Manual 9-10...

  • Page 191: Appendix 1

    G4 Multi Channel Weighing Instrument Appendix 1...
  • Page 192 Technical Manual...
  • Page 194 Document no. 35144 Article no. 600 852 R8 © Vishay Nobel AB, 2011-05-11 Subject to changes without notice. Vishay Nobel AB Vishay BLH Box 423, SE-691 27 Karlskoga, Sweden Edgewater Drive, Norwood, MA 02726, USA Phone +46 586 63000 · Fax +46 586 63099...

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