Totalcomp TWP Series Bedienungsanleitung

TWP series

Weighing Indicator

Service Manual

TWP Weighing Indicator Service Manual

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CONTENTS

1. SPECIFICATIONS….……………………………………………………….....3

2. INSTALATION AND PRECAUTIONS………………………………………..4

Load cell connection..... ……………………………………………….........4

Power operation……………………………………………………………………..5

Battery operation…………………………………………………………………….5

3. NAME AND FUNCTIONS.... ……………………………………….......……..6

Overall view…………………………………………………………………………..6

Display………………………………………………………………………………..6

Key board…………………………………………………………………………….7

4. OPERATION.…………………………………………………………….…….8

Power ON/OFF………………………………………………………………………8

Zero…………………………………………………………………………………...8

Tare…………………………………………………………………………………...8

Sample Weighing……………………………………………………………………8

Check Weighing……………………………………………………………………..9

Enter to Menu………………………………………………………………………..9

Set Limits………………………………………………………………………….....9

Set check weighing mode. …………………………………………………….....9

Accumulation……………………………………………………………………….10

Accumulation automatically……………………………………………….11

Animal Weighing…………………………………………………………………...12

Peak Hold …………………………………………………………………………..13

5. PARAMETER…………………………………………………………………13

Keys operation into menu. ………………………………………………………. 13

Parameter Block…………. ………………………………………………………..14

6. RS232 OUT PUT…………………………………………………………..17

7. CALIBRATION………………………………………………………………..19

8. MAINTENANCE………………………………………………………………22

Cleaning…………………………………………………………………………….22

Error Codes………………………………………………………………………...22

Trouble Shooting…………………………………………………………………..22

9. CIRCUIT DIAGRAM…………………………………………………………..23

10. Quick Set Up………………………………………………………………………31

11. Quick Calibration………………………………………………………………….32

12.

TWP Weighing Indicator Service Manual

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1. SPECIFICATIONS

Model

TWP

Resolution

1/30,000

Indicator housing

ABS Plastic

Stabilisation Time

1 Seconds typical

Operating Temperature

0°C ~ +40°C / 32°F - 104°F

Power supply (external)

AC Adaptor (12V/500mA) /

Ni-MH battery (1.2V/1200mAh x 6)

Calibration

Automatic External

Display

6 digits 22mm LCD display, attached backlight

Interface

RS-232 Output Optional

Zero range

0mV~5mV

Signal input range

0~15mV

ADC

Sigma delta

Internal counts

600,000

ADC update

Max 60 times /second

Load cell drive voltage

Max 5V/150mA

TWP Weighing Indicator Service Manual

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2. INSTALLATION AND PRECAUTION

The weighing indicator is a precision electronic instrument. Handle it care

fully.

Don’t install the scale in direct sunlight.

Avoid sudden temperature changes, vibration, wind and water.

Avoid sudden and jerky acceleration of the load.

Avoid heavy RF noise.

Keep the indicator clean.

Load Cell Connection

Connect the load cell cables to the terminal as shown below.

The load cell drive voltage is 5 VDC, between positive excitation and

negative excitation.

TWP Weighing Indicator Service Manual

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Power Operation

Power is supplied through the external mains adaptor (9 VDC / 800mA). The

mains supply voltage should be the same as local voltage.

Battery Operation

To charge the battery insert the adaptor pin to jack. Adaptor simply plug

into the mains power. The scale no needs to be turned on.

The battery should be charged at least 12 hours for full capacity.

10 hours before switching off automatically for protect the battery.

Do not use any other type of power adaptor than the one supplied with the

TWP.

Verify that the AC power socket outlet is properly protected.

The symbol status of the battery

Battery voltage has dropped

Low voltage

Fully charged

TWP Weighing Indicator Service Manual

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3. NAME AND FUNCTIONS

Overall View

Display

DISPLAY

FUNCTION

LOW

Check weighing

ZERO

Indicator for Zero display

TARE

Indicator for Tare display

GROSS

Indicator for Gross weight

NET

Indicator for Net weight

STABLE

Indicator for Display stability

AUTO

Indicator for Auto Accumulation

M+

Indicator for Accumulation

ANIMAL

Indicator for Animal Weighing Mode

HOLD

Indicator for Hold/ Lock

Indicator for Charging status of battery.

FROUNT

BACK

FROUNT

BACK

TWP Weighing Indicator Service Manual

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KEY

FUNCTION

Turn the power On/ Off

Used to reset to Zero. In setting mode can use to confirm entry

Used to recording tare values and change the value from gross

value to net value. Insetting mode can use to increase the

value and scroll forward in menu.

When the scale has been tare and display is in gross or net

mode. When using the settings mode, can use to move active

digits right.

For print the results, to the PC or printer using the optional RS-

232 interface. It also adds the value to the accumulation

memory if the accumulation function is not automatic. When

using the settings mode, can use to move active digits left.

Switch to unit weight. In setting mode, escape back to menu/

weighing mode.

TWP Weighing Indicator Service Manual

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4. OPERATIONS

Initial Start –Up:

Warm-up time of 15 minutes stabilizes the measured values after switching on.

1. Power ON/OFF:

Switch on the balance by pressing key.

The display is switched on and the test is started and if want to switched

off, press again the key.

2. Zero

Environmental conditions can lead to the balance exactly zero in spite of

the platform not taking any strain. However, you can set the display of

your balance to zero any time by pressing key and therefore ensure

that the weighing starts at zero.

3. Tare

The weight of any container can be tared by pressing button so that

with subsequent weighing the net weight of the object being weighed is

always displayed.

Load weight on the platform.

Press key. Zero is displayed, and tare is subtracted.

Remove weight on the platform. Tare weight is displayed. It can set only

one tare value. It can display with a minus value.

Press G/N to change between gross weight and net weight.

To clear the tare value, remove the load and press key. Zero is

displayed, tare weight is cleared.

4. Sample weighing

Place goods to be weighed on the platform.

Wait few seconds for stability display.

Read the result.

Avoid overloading. When display appears “ol” reduce the load or

unload.

TWP Weighing Indicator Service Manual

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5. Check Weighing

It can set an upper or lower limit when weighing with the limits range.

During the limit controls dividing the unit will indicate whether a value

upper or lower limits with an alarm sound . For details see the parameter F3 oFF.

Check mode 1: No beep sound in the limits. Function turned off.

Check mode 2: When the weight is between the limits. OK will shown and

beep will be sounded.

Check mode 3: When the weight is out of the limits, the beep will

sound and OK will shown.

6. Enter to Menu

In the weighing mode, press and together.

Display will be appear

7. Set limits

Press to enter the function.

Press key to select the limit.

Display will appear

Press key to enter, press key to move active digits.

Press to change the value. After enter the value press to sure.

Press to escape.

8. Set check weighing mode.

After entering the settings mode,

Press until display will be appear

Press key to enter, press until display show

bEEP

Set Lo

F0 H-L

F3 oFF

TWP Weighing Indicator Service Manual

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Press key to enter, press

Check mode 1

Check mode 2

Check mode 3

Select desired setting by pressing and press key to confirm, press

to escape.

Note: The load weight must greater than 20 scale divisions for the check

weighing operations.

To disable the check weighing function, enter zero into both limits.

9. Accumulation

Accumulation

Place the goods on the platform to be weigh

Wait few seconds for display stable, then press . The value will be

saved and printed (if the printer is connected).

Display will be appear this display will

appear two seconds only.

Remove the load and wait few seconds for display return to zero.

Place the second goods on the platform.

Wait few seconds for display stable. Then press . The value will be

saved.

Followed by the total number of weight will be displayed

It can continue the process until the maximum capacity or value.

Note: When you change the weighing unit this saved values will be clear.

bP 1

bP 3

bP 2

ACC 1

ACC 2

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