Gram Z3 Series User Manual
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Gram Z3 Series User Manual

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USER MANUAL
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Summary of Contents for Gram Z3 Series

  • Page 1 USER MANUAL...

  • Page 2: Table Of Contents

    Index On / Off ..................... 3 Initial reset to zero ..................3 Keypad operation ..................4 3.1. ON / OFF .................... 4 3.2. MENU ....................4 3.3. TARE ....................5 3.4. PRINT / SUM ..................6 Description of LCD display ................ 8 Operation options and settings menu ............

  • Page 3: On / Off

    1. On / Off Press and hold the key for 2 seconds. All segments and symbols switch on for a second on the LCD display to verify that they are functioning properly. Below we show the version code for the device’s firmware. To switch off the device, press and hold the key for 2 seconds.

  • Page 4: Keypad Operation

    3. Keypad operation 3.1. ON / OFF If the key is held down for more than 2 seconds, it acts as an on/off switch. A “short” pulse performs the “CLEAR” function: clears the tare, cancels the “hold” mode and resets the total accumulated weight. In “menu”...

  • Page 5: Tare

    3.3. TARE A short pulse activates the tare function. This may be “Normal tare” or “Preset tare” depending on the operating mode selected in the options menu.  Preset tare. The tare stays in the memory after emptying the platform. The >T<...

  • Page 6: Print / Sum

    3.4. PRINT / SUM Print and sum key. When pressing this key, a ticket is printed with the weight shown on the LCD display. The ticket shows print date and time, the ticket’s serial number, gross weight, tare and net weight. Additionally you can print a 3-line header and a footer line with constant information.
  • Page 7 Double click the print key again to add and print each one of the next weighings. At the end of each detail sum, the total accumulated sum appears in the display. To complete the ticket and print the total line, hold down the print key for more than 2 seconds.

  • Page 8: Description Of Lcd Display

    4. Description of LCD display Displays the weight on the scale platform. In HOLD mode, the display flashes to indicate that the real weight on the scale is not being shown, with the last registered stable weight being shown instead. Decimal point.
  • Page 9 Negative sign. This reading may be negative if a tare is activated (in preset tare mode) or to indicate a problem when setting it to zero. Tare activated. The reading flashes when “normal” tare mode has been activated. A “preset” tare is retained even after the weight is removed from the scale platform.

  • Page 10: Operation Options And Settings Menu

    5. Operation options and settings menu To access the settings menu, keep the key pressed down for 2 seconds. The display shows the NEnu message for ½ second to indicate that from then on the indicator will start showing the different selection options. In the “menu”...
  • Page 11 to validate the selected option to go back changes to another option preselected factory setting...

  • Page 12: Auto-Off Option

    6. Auto-off option A-OFF This option programs the device’s automatic switch-off after a time on idle (not being used). The device is understood to be on idle if there is no variation in the weight indication, and no key is pressed. The possible options are the following: The device always remains switched on.

  • Page 13: Sound When Pressing A Key

    8. Sound when pressing a key BEEP This function activates (“On”) or deactivates (“Off”) the emission of a sound when one of the keypad buttons is pressed. The factory setting for this option is “On”. 9. Tare Options tArE The possible options are: Preset tare: The tare will be maintained until the tare P-tAr key is pressed again with an empty scale.

  • Page 14: Keypad Lock

    11. Keypad lock LOCk This function locks the keypad except for the on / off button and access to the options menu. When a key is pressed with the keypad lock activated, no action is performed and the display shows for 1 second.

  • Page 15: Serial Port Rs-232

    12. Serial port RS-232 rS232 The Z3 weight indicator can be connected to other devices to send and receive information via an RS-232 interface. The connection is made using the 3-pin MMC connector on the weight indicator chassis. In this menu, it is possible to configure the different data transmission options from the indicator.

  • Page 16: Serial Port Rs-232: Pr4/Pr6 Printer

    PC-0 K3 weight indicator. For connecting to PC with Virtual Key application. Data frame in a format for the GRAM USB adapter cable. Data frame in a format for the GRAM RD3 model weight repeater display. Connection to model Q2 label printer. A ticket is sent in a format for this printer model.

  • Page 17: Serial Port Rs-232: Frame Format Pc0

    12.2. Serial port RS-232: Frame format PC0 The indicator sends the following byte frames (always 14 bytes in length). 02h 69h 20h 20h 20h 30h 2Eh 30h 30h 30h 6Bh 67h 0Dh 03h STX ‘I’ spc spc spc 0 0 Start of text. 1 Status (tare, zero, net, stable, unstable).
  • Page 18 Examples: The status byte is 61h (‘a‘) 61h – 20h = 41h  Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 (stable) (non- (Tare (Gross) zero) off) The status byte is 69h (‘i‘) 69h –...

  • Page 19: Serial Port Rs-232: Usb Frame Format

    Format compatible with the GRAM USB adapter for PC-type computer with Microsoft Windows operative system. From the PC’s point of view, the GRAM USB adapter is a keypad emulation that transforms the information transmitted by indicator Z3 into a keypad input.

  • Page 20: Serial Port Rs-232: Rd3 Frame Format

    The table below lists the available commands and the response of the Z3 indicator. COMMAND RESPONSE Returns a message with the identification of the “GRAM Z3 Vxxxx” firmware version. Weight request. The Z3 device transmits a weight information frame in PC0 format.

  • Page 21: Ticket Menu

    For commands H1, H2, H3 and F1, the format is the following: … … Where: = ASCII 2 = ASCII 3 = Command (2 characters) = 32-character ASCII text line 13. Ticket Menu tIcKt This menu has various options for configuring the information that appears printed in the tickets generated by the Z3 indicator.

  • Page 22: Scale Configuration Menu

    14. Scale configuration menu SCAlE This menu features the options for parameterising and setting the measurement scale of the instrument. Measurement unit: g, kg, oz, lb. unIt Maximum capacity of the scale. Enter the value, including the decimal digits. Division: The smallest increment that the instrument can measure.

  • Page 23: Settings Menu

    14.1. Settings menu The settings menu can be directly accessed when switching on the indicator. To do this, power up the indicator and, while the LCD test is running with all segments switched on, at the same time press keys (a short pulse, not a sustained pulse).
  • Page 24 3. Once the zero value has been adjusted, place the adjustment weight (a known mass weight) on the load receptor. 4. Enter the weight value in the indicator, including the decimal positions. Use the cursor movement keys to move through the different positions on the display.

  • Page 25: Table Of Geographical Adjustment Values

    14.3 Table of geographical adjustment values Elevation above sea level in metres 1300 1625 1950 2275 2600 2925 3250 Geographical latitude in 1300 1625 1950 2275 2600 2925 3250 3575 the northern or southern Elevation above sea level in feet hemisphere in degrees and minutes.

  • Page 26: Digital Filter

    15. Digital filter FIlT The ADC converter of the Z3 indicator provides a reading of the electrical output of the connected load cell every 100ms. The digital filter consists of a moving average of these readings. Possible values are 1 (moving average of 2 readings), 2 (4 readings), 3 (8 readings), or 4 (16 readings).

  • Page 27: Characteristics Of The Z3 Indicator

    18 Characteristics of the Z3 indicator Load cell connection Maximum input signal ±4 mV/V Maximum input voltage ± 5.3 V Internal resolution AD 20bits converter, 1000000 counts (100000 external) Measurement frequency Maximum 80 samples per second Linearity error ≤0.01% of the measurement range Exciting voltage 5 Vdc Minimum transducer impedance...

  • Page 28: Load Cell Connections

    19.1 Option 1: Indicator with direct cable connection In this option, the cell cable enters the indicator directly, passes through a gland and is connected in the electronic board called “GRAM PRECISION PCB00106”. To access the connection board, the device’s cover has to be raised by loosening the 4 screws in the base of the casing.

  • Page 29: Option 2: Indicator With Cell Connector

    19.2 Option 2: indicator with cell connector In this option, the cell should come with a connector that is compatible with the factory-fitted one. The possible connectors installed in the indicator for load cell connection are: And the pins connection corresponds to that of the following table: PIN No.

  • Page 30: Error Messages

    20 Error messages ADC fail: No ADC response Indicator fault. See technical AdC-E service. Load cell input signal too high Damaged load cell. AdC-h (> 20mV) Wiring default. Load cell input signal too low Damaged load cell. AdC-l (< -20mV) Wiring default.

  • Page 31: Notes

    21 Notes _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________...
  • Page 32 V1.006_ENG - A5_R1_D2...

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