Gram S2 Series Operation Manual
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Gram S2 Series Operation Manual

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Summary of Contents for Gram S2 Series

  • Page 3: Table Of Contents

    Index Before using S2 ..................4 On / Off ..................... 6 Intial zero setting ..................6 Keypad operation ..................7 4.1. TARE ....................7 4.2. ESC key ..................8 4.3. Gross / Net ..................8 4.4. “Hold” mode On / Off ..............8 4.5.

  • Page 4: Before Using S2

    1. Before using S2 S2 connections: 1. AC/DC power adapter, output 7,5 Vdc – 1 A 2. Data output, serial RS-232. 3. Battey 6V-4Ah Plug the AC/DC adaptor to to an electrical outlet to charge the battery before its first use.
  • Page 5 The scale should be placed on a smooth and flat surface. For correct operation, S2 scale must be level in the horizontal plane. Before using the balance, check the bubble level included in the balance, and adjust the feet if necessary. Balance S2 is a device sensitive to temperature changes.

  • Page 6: On / Off

    2. 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 7: Keypad Operation

    4. Keypad operation 4.1. 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 8: Esc Key

    4.2. ESC key In "weight indicator" mode, performs the "CLEAR" function: cancels the tare, cancels the "hold" mode, and resets the accumulated total weight. In "menu" mode, it performs the "ESC" function: it returns to the previous level of the menu without making any changes. If you are in the main menu, you exit the menu mode and return to normal operating mode (weight mode).

  • Page 9: Menú / Activación Control De Límites

    4.5. MENÚ / Activación control de límites Keep the key pressed down for 2 seconds to access the settings menu. A short press switches on / off the limits control function. When the limit control function is activated, an indication at the bottom of the LCD display showns whether the weight on the plate is less than the LOWEr value or is greater than the UPPEr value.
  • Page 10 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 11 To complete the ticket and print the total line, hold down the print key for more than 2 seconds. To show the total sum, press at the same time keys (a short pulse, not a sustained pulse). The total accumulated sum will appear in the display for 2 seconds.

  • Page 12: Description Of Lcd Display

    5. Description of LCD display Displays the weight on the scale pan. 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 13 Connected to the mains. Battery-operated. The weight is below the lower limit. The 4 segments of this indicator are activated proportionally to the difference between the weight on the pan and the value of the lower limit. The thickest segment indicates that the weight is less than the value set as a lower limit in a proportion of 100% or more.

  • Page 14: Operation Options And Settings Menu

    6. 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 15 The following table summarizes the different settings and options: NEnu   OFF   30n  1h  1h30h Automatic shutdown options A-OFF   OFF  On  Auto  Backlight options Bl-On   OFF  On  Beep ON/OFF bEEP ...
  • Page 16     CALIB  Calibration process     G-COr  On   OFF Automatic correction for gravity force effect G-Set      G00   G31 … Location code for g force correction ...

  • Page 17: Auto-Off Option

    7. 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 18: Sound When Pressing A Key

    9. 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”. 10. 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 19: Keypad Lock

    12. 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 20: Serial Port Rs-232

    14. Serial port RS-232 rS232 S2 scale can be connected to other devices to send and receive information via an RS-232 interface. The connection is made using the DB9 connector on the scale chassis. In this menu, it is possible to configure the different data transmission options from the indicator.

  • Page 21: Serial Port Rs-232: Pr4/Pr6/Q2 Printer

    K3 weight indicator. For connecting to PC with Virtual Key PC-0 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 22: Serial Port Rs-232: Frame Format Pc0

    14.2. 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 23 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 24: 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 S2 scale into a keypad input.

  • Page 25: Serial Port Rs-232: Rd3 Frame Format

    The table below lists the available commands and the response of the S2 scale. COMMAND RESPONSE Returns a message with the identification of the “GRAM S2 Vxxxx” firmware version. Weight request. The S2 device transmits a weight information frame in PC0 format.

  • Page 26: 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 15. Ticket Menu tIcKt This menu has various options for configuring the information that appears printed in the tickets generated by the S2 scale Time setting of the S2 scale internal clock.

  • Page 27: Scale Configuration Menu

    16. 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 28: Calibration Menu

    16.1. Calibration menu The calibration 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). Adjustment using a known weight (automatically sets the CALIB initial zero and pending adjustment.
  • Page 29 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 30: Table Of Geographical Adjustment Values

    16.3 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 31: Digital Filter

    17. Digital filter FIlt The ADC converter of the S2 scale 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 32: Characteristics Of The S2 Scale

    20 Characteristics of the S2 scale Load cell Input signal from the load cell 2 mV/V Internal resolution 20bits AD converter, 1000000 counts Measurement frequency Maximum 80 samples per second Linearity error ≤0.01% of the measurement range Exciting voltage to the load cell 5 Vdc User interface Main indicator...

  • Page 33: Error Messages

    21 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 34: Notes

    22 Notes _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________...
  • Page 35 _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________...
  • Page 36 V1.001_ENG - A5_R1_D2...

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