Yamato DP-6900 Manuel utilisateur

Digital platform scale

DP-6900

Service manual

YAMATO CORPORATION YCO-XXXX-XX-XX

•Carefully read this service manual and the product warranty, and then properly use this product.

•Keep this manual for future reference.

-Table of Contents -

1. Basic specifications (dimensions and capacity).................................................................................................2

2. Appearance and display unit.................................................................................................................................4

3. How to use test mode and set the parameters....................................................................................................6

3-1. How to enter test mode ................................................................................................................................6

3-2. How to view information in test mode .........................................................................................................6

3-3. How to set a user parameter and the user parameter table........................................................................8

3-4. Factory setting for each parameter............................................................................................................17

3-5. Initialization of the CPU board ...................................................................................................................20

3-6. Span adjustment (calibration) ....................................................................................................................21

4. Other procedures..................................................................................................................................................22

4-1. How to confirm the checksum ...................................................................................................................22

4-2. How to reset write errors............................................................................................................................22

5-1. Cautions and instructions on use..............................................................................................................23

7. Trouble-shooting ..................................................................................................................................................26

8. Wiring diagram......................................................................................................................................................28

9. Exploded view of the main unit...........................................................................................................................29

9-1 Exploded view of the indicatior...................................................................................................................29

9-2 Exploded view of the weighing platform ....................................................................................................32

9-3 Exploded view of communication options .................................................................................................34

1. Basic specifications (dimensions and capacity)

Model

DP-6900

Weighing method

Strain gauge load cell

Weighing platform dimensions

350(W) x 500(D) mm

Data for each weighing capacity

□DP-6900（NTEP model）

Capacity Increment

Indication

resolution

Minimum

Increment

Maximum

Tare

30kg

0.01kg

1/3000

0.2kg

30kg

60lb

0.02lb

1/3000

0.4lb

60lb

960oz

0.5oz

1/1920

10.0oz

960oz

60lb

0.5oz *1

1/1920

10.0oz

60lb

60kg

0.02kg

1/3000

0.4kg

60kg

150lb

0.05lb

1/3000

1.0lb

150lb

2400oz

1oz

1/2400

20oz

2400oz

150lb

1oz *1

1/2400

11lb:4oz

150lb

150kg

0.05kg

1/2400

1kg

150kg

300lb

0.1lb

1/3000

2.0lb

300lb

4800oz

2oz

1/2400

40oz

4800oz

300lb

2oz *1

1/2400

2lb:8oz

300lb

□DP-6900N（Non NTEP model）

Capacity Increment

Display

resolution

Indication

resolution

Minimum

Increment

Maximum

Tare

30kg

0.005kg

1/6000

1/3000

0.01kg

30kg

60lb

0.01lb

1/6000

1/3000

0.2lb

60lb

960oz

0.2oz

1/4800

1/1920

4.0oz

960oz

60lb

0.2oz

1/4800

1/1920

4.0oz

60lb

60kg

0.01kg

1/6000

1/3000

0.2kg

60kg

150lb

0.02lb

1/7500

1/3000

0.4lb

150lb

2400oz

0.5oz

1/4800

1/2400

10oz

2400oz

150lb

1oz

1/2400

1lb:4oz

150lb

150kg

0.02kg

1/7500

1/3000

0.4kg

150kg

300lb

0.05lb

1/6000

1/3000

1.0lb

300lb

4800oz

1oz

1/4800

1/2400

20oz

4800oz

300lb

1oz

1/4800

1/2400

1lb:4oz

300lb

*1: Unit “lb-oz”is not legal for trade.

Display panel

Display tube

LCD module

Segment size for 1 digit

17(W) x 32(H) mm

Indicators

Weight:

Maximum 5 digits

STABLE sign ( )

Comes on when the measured value of the instrument

is stable

Zero sign (▼)

Comes on when the zero point is displayed.

GROSS sign (▼)

Comes on when the gross weight is displayed with the

tare function enabled.

NET sign (▼)

Comes on when the tare function is enabled.

Overweight sign ( )

Comes on when the checkweighing function is used.

Proper weight sign

( )

Comes on when the checkweighing function is used.

Underweight sign ( )

Comes on when the checkweighing function is used.

Battery sign ()

Displayed at three levels depending

on the remaining battery.

6. Functions

(1) Zero reset function: Resets the indication to zero (within ± 1.9% of weighing capacity).

(2) One-touch tare function: Conducts the one-touch tare function.

(3) Automatic OFF function:

The power is automatically turned OFF when the STABLE sign has

been turned ON for a preset time during the use of batteries.

(4) Checkweighing function:

Evaluates the weighed items as “underweight,” “proper weight,” or

“overweight” starting from the indication of zero.

(5) Gross/Net switching function:

When the tare function is enabled, the indication can be switched

between gross weight and net weight.

(6) LED lighting function:

The Evaluation LED light comes on depending on the weight level:

underweight, proper weight, or overweight.

7. Appearance

(1) Dimensions: 354(W) x 634(D) x 784–804(H) mm

(2) Weight: Approx. 13 kg

(3) Materials:

Indication unit: ABS resin; Weighing platform: steel; Platform cover:

stainless steel

Dust-proof and water-proof

protection:

IP52 compliant

9. Power supply: Lead acid battery(include), AC adapter

10.

Battery life:

Approx. 240 hours in continuous use.

Charging time: Approx. 12 hours.

Cycle life: Approx. 200 times.

11. Power consumption: About 0.036W for normal use and about 1.44W at max

12. Operating conditions

(1) Operating temperature range: –10°C to +40°C

(2) Charging temperature range +5°C to +35°C

(3) Operating humidity range: 30% to 85% R.H.

(no condensation)

13. Option (1)RS232C communication unit (D-SUB 9P)

(2)USB Serial communication unit (USB Type-B)

(3)LAN communication unit (RJ45 / 10BASE-T, 100BASE-T)

(4)Separate stand for indicator

2. Appearance and display unit

Dimensional outline drawing

Display unit

STABLE sign

Zero sign

NET sign

Evaluation

LED light

GROSS sign

Evaluation sign

Battery sign

Comes on when

batteries are used

Operation keys

Power ON/OFF key

Press this key to turn the power ON.

To turn the power OFF, hold down this key until it does.

If the upper and lower limits are set for the checkweighing function, the

checkweighing function starts.

Gross/Net switching key

If you wish to confirm the gross weight with the tare function enabled, press this key

to switch the indicated value between the gross and net weights.

This key can also be used to register various setting values.

Easy Program Set key

Press this key to set a target value with a single action.

This key can also be used to register various setting values.

key

If you wish to use the checkweighing function, hold down this key to start setting a

target value.

This key can also be used to decrease various setting values by 1.

Tare key

Press this key to show the weight of a container as zero. Then the system subtracts

the weight as tare.

This key can also be used to increase various setting values by 1.

Zero Reset key

If the indication is deviated from zero before weight measurement, press this key to

reset it to zero.

This key can also be used to register an input value of user parameters and switch

to the next screen.

(Combination of multiple keys)

＋

User parameter setting mode

Press both keys simultaneously. System enters the user parameter setting

mode, where you can set various user parameters.

＋

Unit Selection

Press both keys simultaneously to toggle among kilogram, pound, ounce and

pound/ ounce indications.

3. How to use test mode and set the parameters

3-1. How to enter test mode

To enter test mode, remove the sealing screws next to the battery box and press the deep-set switch inside the

small round hole with a pointed nonconductive object. The panel will show decuple-precision weight values.

3-2. How to view information in test mode

In test mode you can confirm the following information.

Press or to cycle through the following indications.

Item Indication Description

1. TEST

Internal Count

→

Displays a measurement with

precision ten times higher than the

scale interval used in normal

mode, up to a weighing capacity of

30000 to 64000 counts.

2. INIT

Initial Value

→

Displays the internal counts of the

load applied to the platform when

nothing is placed on the weighing

platform. The value changes if the

zero resetting or the zero tracking

is performed.

3. RAW

Raw Count 1

→

Displays a value obtained as a

result of AD conversion.

4. RAW2

Raw Count 2

→

Displays a value obtained by

averaging the values of the Raw

Count 1.

5. ADC0

Option check

→

Displays the status of internal

correction made by the AD

converter.

6. Bat

Power Supply

Voltage

→

An input voltage from the batteries

or theAC adapter is converted

from analog to digital values inside

the CPU and displayed here.

7. VER

Version

→

Displays the ROM version of the

software.

If you press when the

panel shows the version, you can

confirm the checksum.

8. CHK

Display Check

→

All the segments of the LCD

flicker..

9. PArA

→

Enters parameter setting mode.

10. SPAn

→

Enters span adjustment mode.

11. DEF

→

Enters board initialization mode.

To return to normal mode, press during the indication of the version.

3-3. How to set a user parameter and the user parameter table

The parameters of the DP-6900 are divided into 3 groups, “User Parameters,” “Dealer Parameters,” and

“System Parameters.” In test mode you can change any of the parameters. In normal mode where a weight is

displayed, you can change user parameters only.

(1) User parameters

With the user parameters, the users can change the functions of the instrument according to their

specifications.

◊How to set a user parameter

Operation Display

Press and at the same time.

The panel shows the user parameter #01 and its setting.



Use the following keys when you set user parameters.

:Switches to the next

parameter. :Increases the

parameter setting by 1 : Decreases the

parameter setting by 1.

(TIPS)

Hold down and press to return to the previous parameter (Pressing these keys

when the parameter is #01 switches the parameter to #P4).

When the setting value is flashing, press to shift the focus to the parameter number, which

then flashes. Hold down or at this point to move the parameter number fast forward.

Press again to enter a setting value.



(IMPORTANT)

When you have changed a setting, be sure to press to switch to the next parameter before

turning off the power.

Unless you switch to the next parameter, any changes you made to the setting will be lost.

User parameter table

No. Item

Setting

value

Description of options

#01

Checkweighing function

Disable the checkweighing function

Simplified checkweighing function

Parameter only for DP6900

Inspection checkweighing function

(The upper and lower limits are set using the measured weight of a

sample as the middle value.)

#03

LED lighting timing

Disable LED

(parameter for multi-function)

LED ON upon underweight

LED ON upon proper weight

LED ON upon overweight

Parameter only for DP6900

LED ON upon underweight and flashes upon overweight

No. Item

Setting

value

Description of options

#05

Automatic power OFF time

Disable automatic power OFF function

5 minutes

10 minutes

15 minutes

30 minutes

60 minutes

#07

Flashing of indicated value per

evaluation

(parameter for checkweighing

function)

Disable flashing

Flash upon underweight

Flash upon proper weight

Flash upon overweight

Flash upon underweight or overweight

Synchronize with #03 (LED lighting timing)

#09

Gravity compensation for the region

of use

0: Parameter for instruments for other than transactions or certifications

#10

Scale ID (parameter for option)

0–99:

Factory setting: 000

#11

Communication mode

No communication

(parameter for option)

Automatically send the data when stable

Automatically send the data when stable and removed

Manually send the data with key when stable

Automatically send the data upon proper weight when the

multi-function is used

Manually send the data with key upon proper weight when the

multi-function is used

Setting prohibited

#14

Communication data

(parameter for option)

Net weight

Net weight, tare, and gross weight

Net weight and tare

#15

Communication speed

(parameter for option)

9600 bps

2400 bps

4800 bps

9600 bps

19200 bps

38400 bps

57600 bps

115200 bps

#16

Character length

(parameter for option)

8 bits

7 bits

#17

Parity (parameter for option)

No parity

Odd parity

Even parity

#18

Stop bit

1 bit

(parameter for option)

2 bits

#22

Weighing speed

Standard

Speed-oriented

* If you specify this option for an instrument for transactions or

certifications, it becomes invalid (0: standard).

Parameter only for DP6900

Accuracy-oriented

#23

Display SEnd after sending data

Do not display SEnd

1–8:

Display SEnd for the specified seconds (factory setting: 1)

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