E W Series

(EW100/EW200)

EW100/200-2013-01

Contents

1.      Precautions before Using the Scale……………………………2

1.1    Environment…………………………………………………………2

1.2    Protection in the transportation………………………………2

2.      Name and type of the instrument………………………………3

3.      The description of Construction and Function……………3

3.1   Construction…………………………………………………………3

3.1.1   Enclosure……………………………………………………………3

3.1.2   Keys…………………………………………………………………4

3.1.3   Display………………………………………………………………4

3.2   Function…………………………………………………………………5

3.2.1   Power-up……………………………………………………………5

3.2.2   Display range………………………………………………………6

3.2.3   Zero-setting…………………………………………………………7

3.2.4   Tare…………………………………………………………………8

3.2.5   Check Weighing……………………………………………………9

3.2.6   Power save mode…………………………………………………11

3.2.7   Units selection………………………………………………………11

4.      User Parameters Setting…………………………………………12

4.1   Zero tracking…………………………………………………………12

4.2   Backlight………………………………………………………………12

4.3   Transmitting mode…………………………………………………13

4.4   Label format……………………………………………………………14

4.5   Baud rate………………………………………………………………15

4.6   Data bits………………………………………………………………15

4.7   Auto. shut off time…………………………………………………16

4.8   Sleep mode……………………………………………………………16

4.9   Check alarm type…………………………………………………17

5.      Power Supply & Battery Operation…………………………18

6.      RS-232 Output (optional) …………………………………………19

7.      Error Message…………………………………………………………21

8.      Technical Data……………………………………………………22

1.      Precautions before Using the Scale

1.1    Environment

The scale should always be used in an environment, which is free from excessive air currents, corrosives, vibration, and temperature or humidity extremes.These factors will affect displayed weight reading.  

DO NOT install the scale:

l     Next to open windows or doors causing drafts or rapidtemperature changes.

l     Near air conditioning or heating vents.

l     Near vibrating, rotating or reciprocating equipment.

l     Near magnetic fields or equipment that generatesmagnetic fields.

l     On an unstable work surface

l     In a dusty environment

l     In direct sunlight.

1.2    Protection in the transportation

When the initial use, please refer to the following drawing to take off the protection screw. When the transportation will be made, please install the protection screw on the machine to avoid any damage sensitive components.

2.      Name and type of the instrument

The EW Series weighing instrument is a self-indicating weighing scale of Class III with two weighing ranges, an external AC mains adapter, and an internal rechargeable battery.

3.      The description of Construction and Function

3.1 Construction

3.1.1 Enclosure

The scale is housed in a plastic enclosure. One display is placed on the front together with keyboard and another one is placed on the back. It is intended to be used in shops as well as industrial environment.

A level indicator is built into the enclosure near the keyboard and four adjustable leveling feet are located at the bottom.

3.1.2 Keys

The scale contains 5 keys in one keyboard to control the functions and an On/Off key located at the right side of the scale.

Keypad Function

Indicated symbols

Stable/     : The scale is in stable mode

Zero/     : The scale is in zero mode.

NET: The scale is in tare mode (The display shows Net Value).

Kg/g, lb, oz: The weighing units

W1: The scale is in weighing range 1

W2: The scale is in weighing range 2

HI: The displayed weight is larger than the Hi check limit

OK: The displayed weight is between the Hi limit and Lo limit

LO: The displayed weight is smaller than the Lo check limit

Bat/    : The battery power consumption

3.2 Function

The scale can be available for operation from mains at 110~240V (50/60Hz) with an external AC/DC adapter with 12V output voltage and an optional internal 6V rechargeable battery.

3.2.1 Power-up

When power up the scale, the display will first show the software version for 3 seconds and then perform a self display test. Then it will show the Calibration counting times for about 1 second. After that it will automatically establish the current weight as a new zero reference point.

3.2.2 Display range

The display can show weight from –Max (Tare weight) to Max+9e (Gross weight).

Weighing range switch

The instrument can be calibrated for two weighing ranges, and the two weighing ranges will be changed over automatically according to the weight on the pan.

For example:

W1=1.5kg   e₁=0.5g

W2= 3kg    e₂=1g

When the weight is less than W1+9e_1, the weighing range will be in W1 and e will be e₁;

When the weight exceeds W1+9e₁, the weighing range will go into W2 automatically and e will change to be e₂ (without display off).

When the weight exceeds W2+9e₂, the display will show nothing and the buzzer sounds.

3.2.3 Zero-setting

Zero-setting range: ±2% of Max

Zero-setting is only available when the load receptor is not in motion (The display is stable).

Semi-automatic zero-setting

When there is a minor weight displayed (without load on the pan), press Zero/   key to return to the display to zero, then the ZERO indictor on which indicates that the display now is at the zero point.

Zero-tracking

The instrument is equipped with a zero-tracking feature which operates at a speed of ±0.25e/s and only when the indicator is at gross zero and there is no motion in the weight display.

Initial zero-setting

Initial zero-setting range: ±10% of Max

When the initial zero-setting range is below -10% of Max, the display shows “-------” and the buzzer sounds. To return the display to normal mode, please adding more weights until the initial zero-setting range is between ±10% of Max.

When the initial zero-setting range is beyond +10% of Max, the display shows “-------” and the buzzer sounds. To return the display to normal mode, please take off weights until the initial zero-setting range is between ±10% of Max.

3.2.4 Tare

The instrument is provided with a semi-automatic subtractive tare.

Semi-automatic tare

Press Tare/    key to subtract the current displayed weight value as the tare weight value (Consecutive tare operations are permitted). The NET indicator turns on and the display will show a net weight of the object to be weighted.

To clear the tare value, please remove the container on the pan, then the display will show a minus tare weight value and press Tare/   key again.

Note:

1.      When performing the tare operation(s), make sure the instrument is in stable.

2.      If consecutive tare operations have been performed, to clear the tare value, please remove all the containers on the pan first and then press Tare/   key.

3.      For EW100-3/15/30 scale, the maximum tare weight value can only reach to the Max. displayed value (“-“XXXX). For EW200 scale, it can reach the Max Capacity.

3.2.5 Check Weighing

Press Func./Exit key to set the Check weighing limits.

Set the Hi Limit value first:

Use Unit/   key or Tare/   key to change the flashing digit value; use Zero/   key to move the flashing digit.

Press Print/Enter key to confirm the Hi limit value you have set and start to set the Lo Limit value:

Use Unit/   key or Tare/   key to change the flashing digit value; use Zero/   key to move the flashing digit.

Press Print/Enter key to confirm the Lo limit value you have set and return to weighing mode.

To clear the Check Limits, set all limits to be “0” and confirm the setting.

Note:

1.      The limits should not be set lower than 10e, otherwise the check weighing function will be unavailable.

2.      If the Hi limit value has been set beyond the Max. Capacity, when pressing Print/Enter key to confirm the value, the display will show “E..F.CAP” (Exceed Full Capacity). Press Print/Enter key to confirm the value and start to set the Lo limit value; or press Func./Exit key to set a new Hi limit value.

3.      If the Lo limit value is set larger than the Hi one, the display will show “Reset” for 2 seconds indicating that the limits value should be reset. Then the display returns to Hi limit value setting.

3.2.6 Power save mode (only for EW100)

If the instrument display keeps at zero (no-load) without any operation for 1 minute, the instrument will enter into power save mode automatically.

When putting any weight on the pan or pressing any of the keys, the instrument will work and do the weighing performance (The display will show the weight on the pan).

3.2.7 Units selection (Optional)

When there is not any tare weight or checking limits for the instrument, press Unit/   key to change the weighing unit directly.

When there is tare weight or checking limits for the instrument, give a long press Unit/   key to clear the tare weight or checking limits, and then the unit will be changed.

Note: During Calibration, the Units group has been chosen which decides the Units available in weighing mode.

4.      User Parameters Setting

When the instrument is in weighing mode, give a long press of Func./Exit key to enter into User Parameters setting mode.

4.1    Zero tracking

The display will show as below:

Use Unit/   key or Tare/    key to turn the Zero Tracking function on or off. (Default: on)

The rate of zero tracking is 0.25e/s.

Use Print/Enter key to confirm and move to “Backlight” setting; or use Func./Exit key to exit to the Parameters setting mode.

4.2    Backlight

The display will show as below:

Use Unit/   key or Tare/   key to choose the Backlight brightness (for EW100) to be level 1, 2 or 3 (Default: 2); or choose the Backlight mode (for EW200) to be 1, 2, or 3. (Default: 2)

1----The backlight is off.

2----When an object on or any keys being pressed, the backlight will be on.

3----The backlight will always be on.

Use Print/Enter key to confirm and move to “Transmitting mode” setting.

Use Func./Exit key to exit to the Parameters setting mode.

4.3    Transmitting mode

The display will show as below:

Use Unit/   key or Tare/   key to change the transmitting mode: TR.A.LP, TR.A.DT, TR.A.PC, TR.M.LP, TR.M.DT, TR.M.PC and TR.SER. (Default: TR.A.PC)

Use Print/Enter key to confirm and move to “Transmitting mode” setting.

Use Func./Exit key to exit to the Parameters setting mode.

Note:

Only when RS232 Output has been set to be on in Calibration process, the 3^rd, 4^th, 5^th and 6^th setting can be available in the User Parameter setting mode.

4.4    Label format

The display will show as below:

Give a long press of Zero/   key and the first digit will flash.

Use Unit/   key or Tare/   key to change the digit value; use Zero/   key to move the flashing digit.

Use Print/Enter key to confirm and move to “Baud rate” setting.

Use Func./Exit key to exit to the Parameters setting mode.

Note:

1. Only when the transmitting mode set to be TR.A.LP, TR.A.DT, TR.M.LP and TR.M.DT, this setting will appear; or “Baud rate” setting will show directly after the “Transmitting mode” setting.

2. The Label format can be set to 50 at the most.

4.5    Baud rate

The display will show as below:

Use Unit/   key or Tare/   keyto change the baud rate to be 2400, 4800 or 9600. (Default: 9600)

Use Print/Enter key to confirm and move to “Data bits” setting.

Use Func./Exit key to exit to the Parameters setting mode.

4.6    Data bits

The display will show as below:

UseUnit/   key or Tare/   key to change the data bits to be N8 or E7. (Default: BIT. N8)

Use Print/Enter key to confirm and move to “Auto. shut off time” setting.

Use Func./Exit key to exit to the Parameters setting mode.

4.7    Auto. shut off time

The display will show as below:

Use Unit/   key or Tare/   key to set the Auto. shut off function to be on or off. (Default: off)

Use Print/Enter key to confirm and move to “Sleep mode” setting.

Use Func./Exit key to exit to the Parameters setting mode.

4.8    Sleep mode

The display will show as below:

UseUnit/   key or Tare/    key to set the sleep mode to be on or off.

On---When the instrument stands by over 1 minute, the scale will enter into power save mode automatically.

Use Print/Enter key to confirm and move to “Check alarm type” setting.

Use Func./Exit key to exit to the Parameters setting mode.

4.9    Check alarm type

The display will show as below:

UseUnit/   key or Tare/    key to set the check alarm type to be in or out. (Default: IN)

Use Print/Enter key to confirm and move to “Zero tracking” setting.

Use Func./Exit key to exit to the Parameters setting mode.

5.      Power Supply & Battery Operation

POWER SUPPLY

●     AC 110~240V(50/60Hz)

●     DC 12V/1000mA

BATTERY OPERATION (6V/4.5Ah)

The scale can be operated from the battery if desired. The battery can continuously supply power approximately 20 hours.

When the battery needs charging, the indicator of “Bat” will turn on. The scale can keep operating for about 10 hours when the symbol appears. The scale will automatically switch off to protect the battery.

To charge the battery, simply attach the power supply module to the scale and plug in. The scale does not need to be turned on.

The battery should be charged for 12 hours for full capacity.

There is an LED to indicate the status of battery charging on the right of display. When the scale is plugged into the mains power the internal battery will be charged. If the LED is Green the battery has been charged. If it is Red the battery is nearly discharged and Yellow indicates the battery is increasing the charge level.

As the battery is used, it may fail to hold a full charge. If the battery life becomes unacceptable, then please contact your distributor.

Note: The battery should be recharged every 3 months if the scale is not used for long time.

6.      RS-232 Output (optional)

The scale can be ordered with an optional RS-232 output (PC or Printer)

6.1 Mode: EIA-RS 232C’s UART signal

6.2 Data format:

Baud rate:   2400/4800/9600   BPS

Data bits:         7/8         BITS

Stop bit:           1          BIT

Code format: Code ASC ll

Connector: 9 Pin Socket

Pin3   Output

Pin5   Signal Ground

6.3 Transmit format (For PC)

1.      When the transmitting mode has been set to be TR.A.PC or TR.M.PC, the format should be:

Ex.: The Tare weight is 1.000kg, and the Gross weight is 10.000kg and the Net weight is 9.000kg.

a.       With tare weight

G    10.000 kg

N     9.000 kg

T     1.000 kg

b.      Without tare weight

G    10.000 kg

2.      When the transmitting mode has been set to be TR.SER

HEAD1 (2bytes)               HEAD2 (2bytes)

OL-Overload, Under load       NT-Net weight

ST-Display is stable            GS-Gross weight

US-Display is unstable

Note: The positive sign is replaced by blank when transmitting.

For example:

+0.876kg, when it is stable and net weight.

ST, NT,    0.876 kg 0D 0A

-1.3580 Ib, when it is unstable and gross weight.

US, GS, - 1.358 Ib 0D 0A

6.4 Variables (The prompt character) used in scale also in label printer (LP-50 and DT printer).

Note: For LP-50 printer, the Variables name is the same with the Scale Variables.

7.      Error Message

During the initial power-on testing it is possible the scale may show error message.

The meaning of the error messages is described below.

If the error message still is shown after above ways, please recalibrate. If the problem still cannot be solved then contact your dealer for further support.

8.      Technical Data