TScale TFB sereis Bedienungsanleitung

Service manual

TPF / TFB Series Indicator Service Manual

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CONTENTS

1. BASIC INFORMATION……………………………………………………………1

2. PRECAUTIONS……………………………………………………………………..2

3. SPECIFICATION..…………………………………………………………………. 3

4. INSTALLATION……………………………………………………………………. 5

4.1. Unpacking…………………………………………………………………..5

4.2. Installation……………………………………………………………………6

4.3. Calibration Steps……………………………………………………………7

5. OPERATION.………………………………………………………………………8

5.1. Operation..…………………………………………………………………..8

5.2. Operation Limits…………………………………………………………….8

5.3. Load / Unload weighing...………………………………………………….8

6. MAINTENANCE……..........................................................................….9

6.1. Daily Check………………………………………………………………..9

6.2. Cleaning……………………………………………………………….9

6.3. General……………………………………………………………………10

6.4. Determine the problem………………………………………………...10

6.5. Testing Load cell……………………………………………………..10

6.6. Check Indicator voltages………………………………………………..11

6.7. Problems and Solutions…………………………………………………12

6.8. Parts Replacement………………………………………………………13

7. DRAWING…………….…………………………………………………………..15

7.1. Dimension………………………………………………………………….15

7.2. Exploder Drawing.………………………………………………………16

TPF / TFB Series Floor Scale Service Manual

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1. BASIC INFORMATION

1.1 Documentation

These installation instructions contain all data necessary for placing and

commissioning the floor scales.

1.2 Proper Use

This scale is intended to determine the weighing value of material to be weighed.

It is intended to be used as a “non-automatic balance”.

i.e. the goods to be weighed is manually and carefully placed in the center of the

weighing plate, As soon as stable weighing value is reached the weighing value

can be read.

1.3 Improper Use

Do not leave permanent load on the floor scales.

Do not load the platform, if there is any evidence of damage to the platform

or supporting structure.

Changes to the weighing system’s design are not permitted. This may lead

to incorrect weighing results, safety-related faults and destruction of the

balance.

1.4 Monitoring

In the frame work of quality assurance the measuring –related properties of the

weighing system and, if applicable test weight, must be checked regularly.

1.5 General

Two types of floor scales are available, mild steel and stainless steel.

The TPF floor scale sizes range from 1190x840mm. TFB sizes range from

1200x170x100m

Easy accessible stainless steel junction box.

Four Load cells

Adjusting leveling foot

Overload up to 150%

All models have threated holes in the decks for attaching eyebolts to

facilitate installation and cleaning

TPF / TFB Series Floor Scale Service Manual

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2. PRECAUTIONS

BEWARE OF PINCH POINTS.

USE PROPER LIFITING TECHNICS WHEN

RAISING THE LIFT DECK PLATFORMS.

ENSURE THAT STRUCTURE WHICH SUPPORT

THE FLOOR SCALE IS CAPABLE OF WITH

STANDING THE WEIGHT IF THE SCALE AND ITS

RATED CAPACITY.

2.1 Pay attention to the instructions in the manual.

Carefully read this manual before setup and commissioning, even if you are

already familiar with floor scales.

The appliance may only be operated and maintained by trained personnel.

2.2 Transport and storage

2.2.1 Testing upon acceptance

When receiving the appliance, please check packaging immediately, and the

appliance itself when unpacking for possible visible damage.

2.2.2 Packaging / Transport

Keep all parts of the original packaging for a possibly required for transport.

TPF / TFB Series Floor Scale Service Manual

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3. SPECIFICATION

Model

TPF / TPFS

TFB / TFBS

Capacity

1T / 2T / 3T

1.5T / 3T

Readability

0.5kg / 1kg / 1kg

0.5kg / 1kg

Construction

Mild Steel (A36 Carbon Steel) /

Stainless Steel (Type 304)

Grade Level

Within 3⁰of level

Operating Temperature

0°C - 40°C / 32°F - 104°F

Resolution

3000

Load Cells

4 load cell

ADC

Sigma Delta

ADC Update

≤1/10 second

Stabilization Time

One seconds typical

Gross Weight

61kg and above

45kg and above

Floor level distance

81mm & above

Packing

Wood Box

TPF / TFB Series Floor Scale Service Manual

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Load cell Specifications

Dimension

s in mm

ØD

Cap:

500kg to

15.

25.

76.

54.

31.

15.

31.

13.

M12X1.7

Model

H8C

Rated Capacity ( Emax)

500kg / 1T / 2T

Sensitivity

3.0 ±0.003mV/V

Accuracy Class

Zero Balance

±1% F.S

Input Impedance

400 ±20Ω

Output impedance

352 ±3Ω

Insulation Impedance

≥ 5000MΩ

Temperature Range ( Compensated)

-10°C ~ +40°C

Temperature Range (Operating)

-30°C ~ +70°C

Maximum Safe Overload

150%F.S

Ultimate Overload

180%FS

Excitation , Recommend

10~12V DC

Excitation, maximum

15V DC

Protection Class

IP68

Construction

Alloy Steel

Cable

4mtr

TPF / TFB Series Floor Scale Service Manual

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4. INSTALLATION

4.1 Unpacking

Floor is relatively heavy. Always use a suitable lifting device and technics to lifit it

out of the packaging or to transport it to the required installation site.

Do not step under the suspended load, risky of injury.

When you received the goods, inspect it to make sure that it is not damaged and

accessories according to the customer’s order.

Remove all components from their packing material.

Keep the shipping container and packing material for future use.

Check the packing list.

Collect all necessary installation manuals for the equipment and

accessories.

Open the equipment and perform an inspection.

4.2 Installation

Accurate weighing results require a floor scale with perfect horizontal alignment.

During initial installation and after each change of work area it is necessary to

level the floor scale.

Select a location that is flat, solid, level and full supports the weight of

platform with full capacity load.

Use a forklift or other lifting means, along with chains,

Cables or nylon straps to remove the scale from the crate bottom.

Set the scale so that the interface cable exits in a direction where it can be

protected.

Placing the floor scale with access ramps or foot plates

Select place the floor scale

Place the floor scale correctly on the marked area of the floor scale.

Adjustable foot area wants to observe the evenness and level alignment

If any minor height difference, want to adjust adjustable foot for to

compensate level.

Connect the scale cable to the proper to the indicator.

TPF / TFB Series Floor Scale Service Manual

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Load Cell Connector Connections



4.3 Calibration Steps

Adjust the analog interface indicator to the platform.

Install all the corners to within one division of each other at 25% of the

rated capacity.

Follow the appropriate indicator manual to ensure a proper calibration

Note: The floor scale is shipped fully assembled,

wired and corners calibrated.

Corner (s) Calibration:

The Junction Box (Summing Box) Assembly has four extended range, multi-

turn potentiometer (trim pot), and one or two for each load cell.

7Pin

Connection

Pin 1

Signal -

Pin 2

Signal +

Pin 3

Shield

Pin 4

Exc -

Pin 5

Sen -

Pin 6

Sen +

Pin 7

Exc +

5Pin

Connection

Pin 1

Signal +

Pin 2

Signal -

Pin 3

Shield

Pin 4

Exc -

Pin 5

Exc +

Trim pot

Interface

TPF / TFB Series Floor Scale Service Manual

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STEPS

1. Center the trim pot by turning the adjustment screw counter clock wise

position until a clicking sound is heard, then turning each of them back

clock wise 10 turns

2. Identify the platform corner numbers.

3. Place a test weight (25% of the scale capacity) on the

corner No.1, then move it to No.2, No.3 and No.4.

Note that displayed reading on each corner.

4. Identify the lowest reading.

If scale corners require to do adjustment,

5. Place the test weight at the location of the lowest weight reading.

6. Turn the adjustment on the potentiometer clockwise to the displayed

weight. It can read the same as the highest reading.

7. Proceed clockwise; repeat the adjustment to all corners of the scale until

reading reach all corners is same. Because the trim pot interact with one

another, any adjustment will affect the weight readings at all four corners

of the scale

Note:

If junction box has two trim ports for each load cell,

want to adjust both ports for each corner.

When moving the test weight (s) from the corner to

corner, do not zero the scale. Corner adjustment is to

adjust the corners to be same, not for calibration.

8. Perform a zero reference check with an unload platform

9. Repeat the corner test to ensure all readings are the same before

proceeding.

10.Ensure all corners are same.

11.Remove all weights

12.Perform a final calibration with test weights and appropriate indicator

manual.

Then you can start your operation

2 3

PLATFORM

1 4

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