Yamato PPC-300WP Operation Manual

PPC-300WP Operation Manual

NTEP CC 08-041

YAMATO CORPORATION

1775 S. Murray Blvd.
Colorado Springs, CO 80916 USA

www.YamatoCorp.com

Tel [phone] Fax [phone]

YAMATO TECH CORPORATION

#112-19425 Langley By-Pass
Surrey, B.C. V3S 6K1 Canada
Tel [phone] Fax [phone]

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PPC-300WP Operation Manual

Table of Contents

I. Introduction 1
Conventions 1
Safety Precautions 1

II. Description 4
Name and Function of Parts 4

Specications 5

III. Setup 7
Installing the Batteries 7
Installing the AC Adaptor 7
Leveling the Scale 7
Cleaning the Lower Diaphragm 8

IV. Using the Scale 9
Turning the Scale On and Off 9
Zero the Scale 9
Selecting Units 9
Checking the Battery Level 9
Basic Weighing 9
Net Weighing - Tare Operation 10
Batch Weighing 11
Selectable Functions 12
Packing Function 13
Checkweighing Function 16
Grading Function 19

V. User Parameters 22

VI. Troubleshooting 24

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PPC-300WP Operation Manual

I Introduction

Welcome to your new Yamato scale. This operation manual provides you with instructions on how to

setup, use and care for the PPC-300WP. More advanced technical specications, calibration instruc­tions, conguration information and a parts list are available in the PPC-300WP Technical Manual.

Before using the scale, carefully read, understand, and follow the “Safety Precautions” described in this
manual. Observe the advice given in the “Directions for Use” section to ensure proper operation. Keep
this operation manual handy for reference over the entire life of the scale. The contents of this manual
are subject to change without notice.

Conventions

The following conventions are used in this manual.

Danger : Warns users about a procedure that could result in serious injury or death if

not performed properly or if ignored.

Warning : Warns users about a procedure that could result in injury or property damage if not

performed properly or if ignored.

Caution : Warns users about a procedure that could result in minor injury or damage to the

scale if not performed properly or if ignored.

: Indicates an action that must never be performed.

: Indicates an action that must always be performed.

Note : Statements that provide additional information.

Safety Precautions

Danger - To Avoid Electric Shock

Do not step on, or place heavy or edged objects on the AC adapter cord.

Do not disconnect the AC adapter by pulling on the cord. Connect and disconnect the AC adapter

by holding the plastic body of the AC adapter.
Do not connect or disconnect the AC adapter while the adapter body, cord, or your hands are wet.
Do not spray water onto or submerge the scale when using an AC adapter. Removal of the bat-

tery cover seal for the AC adapter cord voids the water-tight seal of the scale.

Danger - To Avoid Explosion and Fire

This scale is not an explosion-proof model. Do not use the scale in an atmosphere containing

ammable gases or explosive fumes. A re or an explosion can result.

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I Introduction

Danger - To Avoid Fire and Electric Shock

Do not operate the scale if there is smoke or a burnt smell coming from the scale. Remove the

batteries or unplug the AC adaptor immediately. After making sure there is no danger, consult

your dealer. Never try to repair the scale yourself!

Warning

Do not step or sit on the scale. This will damage the scale and you could be injured.

Do not insert your ngers into gaps or holes in the scale. You could be injured.

If the LCD display should break, do not touch the liquid or broken glass from the LCD. The liquid

is toxic if ingested, and the glass can be sharp. Be especially careful around children.
Do not short, submerge or heat the batteries. They could burst and leak corrosive chemicals.

Place the item to be weighed in the center of the platform. Items placed on the edge of the plat-

form may fall off and cause injury or damage.
When weighing a heavy, large or unbalanced item, make sure the item is stable on the platform to

prevent injury or damage.
Place the scale on a stable, level surface to prevent injury or damage.

Caution

Do not lift or carry the scale by the platform. This can damage the scale. Carry and lift the scale

with both hands using the hand grips on the bottom of the scale.
Do not twist the platform. This can damage the scale.
Do not shock load the scale. This can damage the scale.
Do not push the indicator or keys with sharp objects. They can puncture or break the switch

membrane panel, voiding the watertight seal.
This scale is a sensitive weighing instrument, avoid physical shocks. If you drop something on

the scale, overload the scale, step on the platform, or drop the scale, the scale may be dam-

aged and lose accuracy.
Never open the housing. The electronics may be damaged and you may be injured by sharp

edges on the internal parts.
Do not open the battery lid in extremely dusty environments. Dust could stick to the battery lid

seal and prevent a watertight seal when the lid is closed.
Do not place the scale upside down. This could damage the load cell.
Do not lick or place batteries in the mouth.

If the housing is opened or screws loosened, the water-tight seal must be tested after reassembly

to ensure no leaks are present before exposing the scale to liquids.

Use the specied adapter or batteries, and choose a suitable environment. If you do not, the

weight readings may be inaccurate and the scale may be damaged.
When the low battery indicator appears, replace all four of the batteries. When installing the bat-

teries, install them according to the polarity markings in the case (+, -). If the scale will not be

used for a long period, remove the batteries. Do not mix alkaline and manganese batteries.
After changing batteries, wipe the battery lid seal with a damp cloth to remove foreign matter that

could prevent a watertight seal. Fasten the battery lid tightly.
Keep batteries out of the reach of small children.
Dispose of batteries in accordance with all applicable regulations.

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I Introduction

To keep the scale working efciently

The PPC-300WP is rated IP68 (waterproof) when it has been closed by Yamato authorized tech-

nicians using Yamato approved equipment and procedures. When closed by other technicians

or methods, the PPC-300WP is only rated IP65 (washdown).
Do not place the scale in an area exposed to direct sunlight, wind currents, re or steam, other-

wise, the measurements will not be accurate.
Do not place the scale near machines that create vibrations or electromagnetic disturbance, such

as microwave ovens, portable phones, or large motors. This will affect the accuracy.
The operating environment is a work temperature range of –10°C to +40°C (14°F to 104°F) and a

humidity range of 30% RH to 85% RH. Do not subject the scale to sudden temperature chang-

es. Allow the scale to adjust to new temperatures before use. For example, a 10°C change in

temperature will require approximately 5 minutes before thermal equilibrium is reached.
If the scale is sealed as legal for trade, do not break the seal. If you break the seal, the scale will

not be considered legal for trade. In this case, contact your dealer.

Do not disassemble or modify the scale, you will void the warranty. Modied scales may not be

legal for trade and may loose thier IP rating.

Remove the batteries when using the AC adapter. The scale will continue to draw power from the

batteries, if they are installed, even with an AC adapter connected.

Place the scale on a at stable surface that will support the scale and the load.
Use only parts and modications specied by Yamato. Yamato cannot be held responsible for

problems caused by modications or parts not specied by Yamato.

If dust or foreign matter becomes lodged in the lower diaphragm chamber, remove it following the

instructions in Cleaning the Lower Diaphragm.

End of life disposal

Dispose of all electronic equipment in accordance with all applicable laws and regulations.

Cleaning

If the scale becomes dirty, clean it with a soft cloth and clean water. For stubborn stains, apply a

little neutral detergent and then wipe the scale with a dry cloth.
When sanitizing the stainless steel platform and platform support with hypochlorous acid; use a

concentration of 200 ppm or less, soak for 5 to 10 minutes, rinse with clean water and dry with a

clean cloth.
When sanitizing the scale body with hypochlorous acid; spray the scale with the hypochlorous

acid solution, rinse with clean water and dry with a clean cloth.
When cleaning the scale with an alchol solution; use a concentration of 80% or less, rinse all plas-

tic parts and the overlay with clean water and dry with a clean cloth.
When cleaning the scale with mild detergent; place the detergent on a sponge or cloth, use the

sponge or cloth to clean the scale, rinse with clean water and dry with a clean cloth.

Do not submerge the scale body in liquid to clean it. This will prevent deterioration of some of the

plastic components.
Do not use abrasive cleaners, thinner, benzene, boiling water or cleaning implements (scrub

brushes, scourers, etc.) which may damage the scale body and overlay, or cause discoloration.

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123

456

789

10

11 12 13 14

15

II Description

Name and Function of Parts

1) ON/OFF Key Press to turn the power on or to enter function mode. Hold to turn
power off.

2) Zero Key Press to zero the display, select a digit, select the next parameter, or
store a setting. Simultaneously press the Zero and Tare keys to enter
user parameter mode.

3) Mode Toggle Press the ON/OFF and Zero keys simultaneously to toggle between
function and normal weighing modes.

4) Tare Key Press to tare off the current load or to increment a digit. Simultaneously
press the Zero and Tare keys to enter user parameter mode.

5) Net/Gross Key Press to toggle between net and gross weight readings if a tare is en­tered, or to decrement a digit.

6) Unit Toggle Press the Net/Gross and Tare keys simultaneously to toggle through the
available weight units.

7) User Parameter Mode Indicates that the scale is in user parameter mode.

8) Test Mode Indicates that the scale is in test mode.

9) Battery Status Indicates approximate remaining battery capacity in thirds.

10) Bubble Level Use to level the scale.

11) Stable Indicator Indicates the weight reading has stabilized.

12) Net Weight Indicator Indicates the displayed weight is a net weight.

13) Center of Zero Indicator Indicates the scale is at zero gross load.

14) Bar Chart Indicates relationship between load and desired weight. The exact
meaning depends on the function mode in use.

15) Function Modes CHECK - The scale is in Checkweighing function mode.

PACK - The scale is in Packing function mode.
RANK - The scale is in Grading function mode.

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II Description

Name and Function of Parts

Specications

Weighing system: Strain-gauge load cell
Platform: 9.1” x 7.9” (232 x 202 mm), stainless steel
Capacities and divisions:

Kilogram Pound Ounce Pound-Ounce* Max. Tare

2 kg x 0.001 kg 4.4 lb x 0.002 lb 80 oz x 0.05 oz 5 lb x 0.05 oz Capacity

4 kg x 0.002 kg 10 lb x 0.005 lb 160 oz x 0.1 oz 10 lb x 0.1 oz Capacity

10 kg x 0.005 kg 22 lb x 0.01 lb 352 oz x 0.2 oz 22 lb x 0.2 oz Capacity

20 kg x 0.01 kg 44 lb x 0.02 lb 704 oz x 0.5 oz 44 lb x 0.5 oz Capacity

* Combined units, such as pound-ounce, are not legal-for-trade.

Weight display: PPC-300WP - single display
Type: 7 segment LCD
Character size, etc.: 0.5” (13.5 mm) (W) x 1.2” (30 mm) (H), 5 digits
Functions: One touch tare, battery charge indicator, auto-off timer, and check-

weighing, packing and grading functions
Housing: Upper - 304 Stainless Steel
Lower - ABS resin
Enclosure Rating: IP68 when sealed by Yamato authorized technicians,
IP65 otherwise.
Optional equipment: AC adaptor (use voids watertight seal)
Power supply: 6 VDC - four “D” size batteries or optional AC adaptor
Consumption: 0.07 W (max.)
Battery life: ~ 1400 hours of continuous use with alkaline batteries
Operating temperature: 14°F to 104°F (-10°C to 40°C)
Operating humidity: 30% to 80% relative humidity (no condensation)
Weight: 3.7 kg

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II Description

Specications

Dimensions:

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No good No good No good

Benchmark

Circle

Bubble

III Setup

Caution

Place the scale on its side to access the undercarriage.

Do not turn the scale upside down. This could damage the load cell.
Do not use the AC adapter when batteries are installed in the scale.

Installing the Batteries

Remove the stainless steel platform cover. Gently and carefully turn the scale on its side. Ensure the
surface around the battery cover is dry and free of dust. Do not allow water or dust to enter the battery
compartment. Turn the two battery cover locks counterclockwise 90° and remove the cover. Install the
four alkaline "D" cell batteries according to the polarity markings on the battery holder. If you reverse
the polarity of the batteries, the scale could be damaged. Ensure that the battery cover seal is clean
and free of any obstructions that may cause a leak. Replace the battery cover and turn the two locks
clockwise 90° until you hear them click into place. Place the scale on its feet.

Installing the AC Adaptor

Caution - Removing the battery lid adhesive sealing tape voids the watertight seal of the scale!

Use of the AC adaptor is not recommended if the scale is to be exposed to water or to high
levels of dust.

Use only the AC adaptor specied for use with this scale. Using the wrong adaptor can damage the

scale or cause inaccurate readings. Gently and carefully turn the scale on its side. Open the battery
cover and remove any batterres that are installed. The scale will continue to draw power from the bat­teries, if they are installed, even with an AC adapter connected. Remove the sealing tape that is on

the battery cover. Thread the AC adaptor plug through the exposed hole in the battery cover and rmly

connect it to the AC adaptor jack in the battery compartment. Securely close the battery cover taking
care not to catch the adaptor cord between the lid and the seal. Place the scale on its feet.

Leveling the Scale

Place the scale on a vibration free, at, level surface that can bear the weight of the scale and any load

that may be placed on it. Observe the bubble level indicator on the left side of the display. The bubble
should be in the center of the circle. Adjust the trim by turning the feet in or out to lower or raise the
corner of the scale the foot is on until the bubble is centered in the level indicator. If the scale is not
level, the readings may not be accurate.

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III Setup

Caution

Place the scale on its side to access the undercarriage.

Do not turn the scale upside down. This could damage the load cell.
Do not puncture or tear the lower diaphragm. This will void the watertight seal.

Cleaning the Lower Diaphragm

It will be necessary to clean out the lower diaphragm chamber if the scale is used in an extremely dust
environment, or an environment with foreign matter that may become lodged in the chamber. Objects
in the lower diaphragm chamber can interfere with the load cell and cause inaccurate readings.
Remove the stainless steel platform cover. Gently and carefully turn the scale on its side. Wipe away
any foreign matter or liquid in the vicinity of the diaphragm cover. Press the tab on the diaphragm
cover and remove the cover. Gently remove any built up dust or foreign matter in the lower diaphragm
chamber with your ngers, taking care not to tear or puncture the diaphragm. Replace the lower dia­phragm cover.

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IV Using the Scale

Turning the Scale On and Off

Remove everything from the weighing platform and press the key to turn the scale on. The display
will briey ash all segments of the LCD. After approximately ve seconds, the display will stop ash-

ing and automatically set to zero. Press the key for about three seconds to turn the scale off.

Zero the Scale

If a weight value is displayed when the platform is empty, press the key to zero the scale while the
weight indication is stable
56 divisions, then the scale will inidicate
while the platform is empty to return to a zero indication.

Changing Units

To switch between kilogram, pound, ounce and pound-ounce units; press the and keys at the
same time.

Checking the Battery Level

The battery status indicator shows the approximate life remaining in the batteries as follows:

" "

. If the weight offset is greater than the push-button zero range, about

" "

. If this happens, then turn the scale off and back on

2/3 to full charge remaining.

1/3 to 2/3 charge remaining.

Less than 1/3 charge remaining.

Battery charge is too low. Replace all four "D" batteries observing the polarity markings.

Basic Weighing

1. Begin with nothing on the weighing platform, the display reading zero,

and the center of zero and stable indicators lit.

2. Place the items to be weighed on the weighing platform and wait for

the stable indication. The weight displayed is the gross weight.

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IV Using the Scale

Net Weighing - Tare Operation

Net weighing displays the weight of an item without the weight of its container. The weight of the con­tainer is tared off.

Caution

The total gross weight should never exceed the capacity of the scale. This can damage the load

cell.

1. Begin with nothing on the weighing platform, the display reading zero,

and the center of zero and stable indicators lit.

2. Place an empty container on the weighing platform and wait for the

stable indication.

3. Press the key. The weight of the container will be subtracted au-

tomatically and the net weight indicator will display.

4. Place the items to be weighed in the container. The weight displayed

will be the net weight of the items.

5. To display the gross weight, press the key. The net weight indica-

tor will no longer display, and the displayed weight will be the gross
weight of the container and the items. Press the key again to

return to the net weight.

6. To return to gross weighing mode, remove all items from the weighing

platform, wait for the stable indication, and press the key.

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IV Using the Scale

Batch Weighing

Batch weighing displays the weight of several different combined items in succession. An example is
weighing each of the different ingredients in a pizza.

Caution

The total gross weight should never exceed the capacity of the scale. This can damage the load

cell.

1. Begin with nothing on the weighing platform, the display reading zero,

and the center of zero and stable indicators lit.

2. Place an empty container on the weighing platform and wait for the

stable indication.

3. Press the key. The weight of the container will be subtracted au-

tomatically, the net weight indicator will display, and the scale will read
zero.

4. Add the rst item to be weighed in the container until the desired

weight is reached.

5. Press the key to return to net zero. Add the second item to be

weighed in the container until the desired weight is reached.

6. Press the key to return to net zero. Continue adding items and

taring them off until all the desired items have been added to the con­tainer. Press the key at any time to toggle between the total gross

weight and the current net weight.

7. Remove the container and all items from the weighing platform, wait

for the stable indication, and then press the key to reset the scale
to zero.

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IV Using the Scale

Selectable Functions

The PPC-300 family of scales offer three selectable functions to assist you with your weighing needs.
These functions are packing, checkweighing and grading. Each of these functions are programmable
by the operator to give you the exibility to adapt the PPC-300 to your processes. User setup param­eter 01 controls which, if any, of these functions is enabled.

Parameter 01=000

None of the functions are enabled.

Parameter 01=001

The packing function is ideal for lling containers. The numeric display indicates the weight that needs

to be added or removed from the platform to reach the target weight. The bar chart gives a graphical
representation of the loaded weight in relationship to the target weight for quick reference. Up to 99 dif-

ferent setups can be stored for later recall. Available options include a ashing indication to announce

an acceptable, unacceptable, under, or over weight condition; and an auto-tare feature that automati­cally tares off the container weight at the beginning of each weighment. The packing function is not
legal for trade.

Parameter 01=002

The checkweighing function uses a lower limit and upper limit to establish an acceptable weight range

for portioning, quality control and lling while displaying the weight loaded on the platform. The bar

chart gives a graphical representation of the status of the loaded weight in relationship to the upper
and lower limits for quick reference. Up to 99 different setups can be stored for later recall. An optional

ashing indication announces an acceptable, unacceptable, under, or over weight condition.

Parameter 01=003

The grading function allows you to dened up to 15 continuous weight grades and displays the grade

of the current load. This facilitates quick, error free sorting by the operator without a need to consult or
memorize grade charts. Anywhere from 12 to 66 different setups can be store for later recall, depend­ing on the number of grades within each setup. Available options include a ashing indication to an­nounce a weight above the minimum grade, and a stability function that lets you choose to have a real
time grade display or to require a stable reading before the grade is displayed. The grading function is
not legal for trade.

More details on each of these functions and setup examples are available on the following pages.

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IV Using the Scale

Packing Function

The packing function is ideal for lling containers. The numeric display indicates the weight that needs

to be added or removed from the platform to reach the target weight. The bar chart gives a graphical
representation of the loaded weight in relationship to the target weight for quick reference. Up to 99 dif-

ferent setups can be stored for later recall. Available options include a ashing indication to announce

an acceptable, unacceptable, under, or over weight condition; and an auto-tare feature that automati­cally tares off the container weight at the beginning of each weighment. The packing function is not
legal for trade.

Enable

1. To enable the packing function, press the and keys at the

same time. The yellow tabs on these keys are reminders of how to
enter user setup mode. You are now in user setup mode with param­eter 01 displayed.

2. Use the and keys to change the parameter value to 001. The

down and up arrows next to these keys indicate that they decrease
and increase, respectively, the displayed value.

3. To store any changes made to this parameter and to advance to the

next parameter, press the key. The right arrow next to this key
indicates that it advances the display to the next parameter.

4. If you wish to set the automatic tare, advance to parameter 06.

000 disables the automatic tare.
001 enables the automatic tare.

Press the key to save any changes and advance to the next pa-

rameter.

When enabled, this feature automatically tares off the rst stable reading after zero. This tare is

automatically cleared when the scale returns to zero.

5. If you wish to set a ashing weight reading, advance to parameter 07.

000 disables the ashing feature.
001 ashes when a stable weight under the acceptable weight

range is loaded.

002 ashes when a stable weight in the acceptable weight range is

loaded.

003 ashes when a stable weight over the acceptable weight range is loaded.
004 ashes when a stable weight outside the acceptable weight range is loaded.

Press the key to save any changes and advance to the next parameter.

6. When all the parameters in user setup mode are properly congured, press the key for about

three seconds to turn the scale off. Press the to turn the scale on. The packing function is now
enabled.

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IV Using the Scale

Packing Function

Once the packing function is enabled, the target weight and allowable range need to be setup.

Setup

1. With the scale on and the platform empty, press the key for one

second. The scale will indicate that it is in pack setup mode and the

indicator will ash.

2. Up to 99 different congurations can be stored in memory. Initially,

the scale will display conguration 01. Use the and keys to

select the desired conguration. Example: Press the key four
times to select conguration 05.

3. Press the key to enter the target weight setting, or (if the congu-

ration has already been setup) press the key to exit setup and
begin weighing.

4. Use the key to select a digit to change, and the and keys

to decrease or increase the digit's value. Example: Press the
key three times to select the fourth digit. Press the key once to

change the digit to "1".

5. Press the key to enter the target weight and progress to the ac-

ceptable weight range. The acceptable weight range is the value
above the target weight that is acceptable. Example: For an accept­able range of 10.00 to 10.25 pounds, enter 0.25 (10.00 + 0.25 lb.)

6. Use the key to select a digit to change, and the and keys

to decrease or increase the digit's value. Example: Press the key
once to select the second digit. Press the key twice to change the
digit to "2". Press the key again to select the next digit. Press the

key ve times to change the digit to "5".

7. Press the key to enter the acceptable weight range and exit setup

mode. The scale will display a negative value equal to the target
weight.

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IV Using the Scale

Packing Function

This is an example of how the packing function operates once it has been enabled and setup. The set­up for this example has a target weight of 10.00 lb and a range of 0.25 lb. Automatic tare is enabled,

and the scale is set to ash when a weight within the acceptable weight range is loaded.

Operation

1. The scale should display the negative value of the target weight. The

, stable and center-of-zero indicators should be displayed.

2. Place the item to be tared on the scale. The scale will automatically

tare this weight off. The net weight indicator should be displayed, and
the center-of-zero indicator should not.

3. Begin loading the scale with the product to be weighed. As the

amount of product increases, the negative weight reading will ap­proach zero and the length of the bar chart will increase.

4. The weight reading will begin to ash, and the bar chart will enter the

ACCEPT range when the target weight is reached.

5. The weight reading will continue to ash, and the bar chart will remain

in the ACCEPT range through the acceptable weight range.

6. If the acceptable weight range is exceeded, the weight reading will

stop ashing, and the bar chart will enter the OVER range. Remove

enough product to return to the acceptable weight range.

7. When the product weight is in the acceptable range, remove the prod-

uct with the tared item. The scale will automatically clear the tare and
return to the negative target weight reading. Press the and

keys to toggle between the checkweighing function and the normal
weighing mode.

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IV Using the Scale

Checkweighing Function

The checkweighing function uses a lower limit and upper limit to establish an acceptable weight range

for portioning, quality control and lling while displaying the weight loaded on the platform. The bar

chart gives a graphical representation of the status of the loaded weight in relationship to the upper
and lower limits for quick reference. Up to 99 different setups can be stored for later recall. Available

options include a ashing indication to announce an acceptable, unacceptable, under, or over weight

condition.

Enable

1. To enable the checkweighing function, press the and keys at

the same time. The yellow tabs on these keys are reminders of how
to enter user setup mode. You are now in user setup mode with pa­rameter 01 displayed.

2. Use the and keys to change the parameter value to 002. The

down and up arrows next to these keys indicate that they decrease
and increase, respectively, the displayed value.

3. To store any changes made to this parameter and to advance to the

next parameter, press the key. The right arrow next to this key
indicates that it advances the display to the next parameter.

4. If you wish to set a ashing weight reading, advance to parameter 07.

000 disables the ashing feature.
001 ashes when a stable weight under the acceptable weight

range is loaded.

002 ashes when a stable weight in the acceptable weight range is

loaded.

003 ashes when a stable weight over the acceptable weight range is loaded.
004 ashes when a stable weight outside the acceptable weight range is loaded.

Press the key to save any changes and advance to the next parameter.

5. When all the parameters in user setup mode are properly congured, press the key for about

three seconds to turn the scale off. Press the to turn the scale on. The checkweighing function
is now enabled.

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IV Using the Scale

Checkweighing Function

Once the checkweighing function is enabled, the lower limit and upper limit need to be setup.

Setup

1. With the scale on and the platform empty, press the key for one

second. The scale will indicate that it is in checkweighing setup mode
and the indicator will ash.

2. Up to 99 different congurations can be stored in memory. Initially,

the scale will display conguration 01. Use the and keys to

select the desired conguration. Example: Press the key four
times to select conguration 05.

3. Press the key to enter the lower limit weight setting, or (if the con-

guration has already been setup) press the key to exit setup and
begin weighing.

4. Use the key to select a digit to change, and the and keys

to decrease or increase the digit's value. Example: Press the
key three times to select the fourth digit. Press the key once to

change the digit to "1".

5. Press the key to enter the lower limit weight and progress to the

upper limit weight. The acceptable weight range is any weight be­tween the upper and lower limits, inclusive.

6. Use the key to select a digit to change, and the and keys

to decrease or increase the digit's value. Example: Press the key
once to select the second digit. Press the key twice to change the
digit to "2". Press the key again to select the next digit. Press the

key ve times to change the digit to "5". Press the one more

time and then press the key once to change the digit to "1".

7. Press the key to enter the upper limit weight setting and exit setup

mode. If either limit is set to zero, the scale will display "FAULT".

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IV Using the Scale

Checkweighing Function

This is an example of how the checkweighing function operates once it has been enabled and setup.
The setup for this example has a lower limit of 10.00 lb and an upper limit of 10.25 lb. The scale is set

to ash when a weight within the acceptable weight range is loaded.

Operation

1. The scale should display zero. The , stable and center-of-zero

indicators should be displayed.

2. If you wish to enter a tare, place the item on the scale platform and

press the key. The net weight indicator should be displayed, and
the center-of-zero indicator should not.

3. Begin loading the scale with the product to be weighed. As the

amount of product increases, so will the weight display and the length
of the bar chart.

4. The weight reading will begin to ash, and the bar chart will enter the

ACCEPT range when the lower limit weight is reached.

5. The weight reading will continue to ash, and the bar chart will remain

in the ACCEPT range up to, and including, the upper limit weight.

6. If the upper limit weight is exceeded, the weight reading will stop

ashing, and the bar chart will enter the OVER range. Remove

enough product to return to an acceptable weight.

7. When the product weight acceptable, remove the product. To clear

an entered tare, remove everything from the scale platform and press
the key. Press the and keys to toggle between the check-

weighing function and the normal weighing mode.

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IV Using the Scale

Grading Function

The grading function allows you to dened up to 15 continuous weight grades and displays the grade

of the current load. This facilitates quick, error free sorting by the operator without a need to consult
or memorize grade charts. Anywhere from 12 to 66 different setups can be store for later recall, de-

pending on the number of grades within each setup. Available options include a ashing indication to

announce an acceptable weight grade, and a stability function that lets you choose to have a real time
grade display or to require a stable reading before the grade is displayed. The grading function is not
legal for trade.

Enable

1. To enable the grading function, press the and keys at the

same time. The yellow tabs on these keys are reminders of how to
enter user setup mode. You are now in user setup mode with param­eter 01 displayed.

2. Use the and keys to change the parameter value to 003. The

down and up arrows next to these keys indicate that they decrease
and increase, respectively, the displayed value.

3. To store any changes made to this parameter and to advance to the

next parameter, press the key. The right arrow next to this key
indicates that it advances the display to the next parameter.

4. The second parameter determines the number of grades for all setups. The greater the number of

grades, the fewer setups that can be stored in the scale's memory.

Setting 002 003 004 005 006 007 008 009 010 011 012 013 014 015

# of grades 2 3 4 5 6 7 8 9 10 11 12 13 14 15

# of setups 66 49 39 33 28 24 22 19 18 16 15 14 13 12

5. Use the and keys to set the desired value. Example: For

three grades, press the key three times to change the setting from
006 to 003.

6. Press the key twice to advance to parameter 04. If a real time-

grade display is desired, set parameter 04 to 000 using the and

keys. If a stable weight reading is required before displaying the

grade, set parameter 04 to 000.

7. If you wish to set a ashing grade display, advance to parameter 07

and set it to any value other than 000. Press the key to save any
changes and advance to the next parameter. Press the key for
about three seconds to turn the scale off. Press the to turn the

scale on. The grading function is now enabled.

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IV Using the Scale

Grading Function

Once the grading function is enabled, the grade weights need to be setup. Each weight entered is the

lowest acceptable weight for that grade. This example will setup three grades. The rst is from 8.00 to

9.99 lb. The second is from 10.00 to 11.99 lb. The third is from 12.00 to 18.00 lb. Since parameter 02
is set to 003, the scale will prompt for four weights. The weights for this setup will be 8.00, 10.00, 12.00
and 18.01 lb.

Setup

1. With the scale on and the platform empty, press the key for one

second. The scale will indicate that it is in grading setup mode and
the indicator will ash.

2. Up to 66 different congurations can be stored in memory. Initially,

the scale will display conguration 01. Use the and keys to

select the desired conguration. Example: Press the key four
times to select conguration 05.

3. Press the key to enter the grade weight setting. If the congura-

tion is already setup, then press the key to exit setup and begin

weighing. The single bar on the bar chart indicates that this is the rst

grade weight.

4. Use the key to select a digit to change, and the and keys

to decrease or increase the digit's value. Example: Press the key
eight times to change the digit to "8". Press the key to save this

weight and advance to the next grade.

5. Enter the second grade weight. Example: Press the key three

times to select the fourth digit. Press the key once to change the
digit to "1". Press the key to save the second weight and advance

to the next grade.

6. Enter the third grade weight. Example: Use the keys to enter 12.00

lb. Press the key to save the third weight and advance to the nal
weight entry.

7. Enter the nal weight. This will be the lowest unacceptable weight

above the nal grade. Example: The nal grade is from 12.00 to

18.00 lb, so enter 18.01 lb (one division above 18.00 lb). Press the

key to save the nal weight and exit setup mode.

The scale will not accept a grade weight that is equal to or less than the previous grade weight.

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IV Using the Scale

Grading Function

This is an example of how the grading function operates once it has been enabled and setup. The
setup for this example has grades of 8.00 to 9.99 lb, 10.00 to 11.99 lb, and 12.00 to 18.00 lb. The

scale is set to display real time grade values. The ashing display is not enabled.

Operation

1. The scale should display the grading setup that is active, 05 in this

example. The , stable and center-of-zero indicators should be
displayed. The rightmost two digits should display underscores. This
indicates that the current load is below the lowest grade.

2. If you wish to enter a tare, place the item on the scale platform and

press the key. The net weight indicator should be displayed, and
the center-of-zero indicator should not.

3. Load the scale with the product to be graded. If the product falls at or

above the rst grade setpoint, and below the second grade setpoint,

then grade 01 will be displayed.

4. If the product falls at or above the second grade setpoint, and below

the third grade setpoint, then grade 02 will be displayed.

5. If the product falls at or above the third grade setpoint, and below the

nal grade setpoint, then grade 03 will be displayed.

6. If the product falls at or above the nal grade setpoint, then two over-

scores will be displayed.

7. Remove the product and any tared item. If a tare was entered, press

to clear it. Press the and keys to toggle between the

checkweighing function and the normal weighing mode.

If parameter 04 is set to 001 (stable weight reading required), then the
scale will display two dashes on the right until the weight reading is
stable.

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V User Parameters

The PPC-300 family of scales have nine functional user parameters that can be accessed by pressing
the and keys at the same time.

Parameter Default Description Settings

01 000 Function selection 000: Functions disabled.

001: Packing enabled.
002: Checkweighing enabled.
003: Grading enabled.

02 006 Number of grades 000: Grading suspended.

001 - 0015: 1 - 15 grades.

03 000 Buzzer 000: Disabled.

001 - 004: PPC-300WP only.

04 000 Grade stability 000: Real time grade display.

001: Grade displayed at stable reading.

05 003 Auto-off timer 000: Disabled.

001: After idle for 5 minutes.
002: After idle for 10 minutes.
003: After idle for 15 minutes.
004: After idle for 30 minutes.
005: After idle for 60 minutes.

06 000 Automatic Tare 000: Disabled.

001: Enabled (packing function only).

07 000 Flashing display 000: Disabled.

001: Flash when under weight.
002: Flash for acceptable weight.
003: Flash when over weight.
004: Flash when under or over weight.
005: Flash when buzzer sounds.

08 - 19 000 Inactive 000: Do not adjust these settings

22 000 Vibration

compensation

23 001 Units at power on 000: kg

000: Standard, highest response speed.
001: Increased, slower response speed.
002: Maximum, slowest response speed.

001: lb
002: oz
003: lb-oz

Once in user parameter mode use the key to select the desired parameter, then use the and

keys to change the set value to the desired value. The arrows next to these keys indicate their

function. Once the parameter value has been changed, press the key again to save the change.

After all the desired parameter changes have been made, press the key for about three seconds to

turn the scale off. Press the to turn the scale back on. It is now ready for use with the changes in
effect. Please see the following page for a more detailed explanation of each parameter.

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V User Parameters

01 - Function Selection
The PPC-300 series has three user selectable weighing functions: Packing, Checkweighing, and Grad­ing. The value of this parameter determines which, if any, of the three functions is enabled. For more
information on these functions, please see section IV of this manual.

02 - Number of Grades
The grading function can be set to have 2 to 15 grades. The higher the number of grades, the fewer
the number of different grading setups that can be stored in memory. Please see section IV of this
manual for more information on the grading function.

Setting 002 003 004 005 006 007 008 009 010 011 012 013 014 015

# of grades 2 3 4 5 6 7 8 9 10 11 12 13 14 15

# of setups 66 49 39 33 28 24 22 19 18 16 15 14 13 12

03 - Buzzer
This parameter only applies to the PPC-300WP.

04 - Grade Stability
The grading function can be set to either show a real time display of the calculated grade, or to show
no grade value until a stable weight reading has been acheived. If this parameter is enabled (001) then
the scale will display two dashes in place of the grade value until the weight reading is stable. Then it
will display the appropriate grade.

05 - Auto-off Timer

The PPC-300 series of scales can be set to automatically turn off after a specied time with no activity.

This feature only operates when the scale is using batteries for power.

06 - Automatic Tare
The packing function can be set to automatically tare an initial stable weight, and to automatically clear
the tare when the scale returns to zero.

07 - Flashing Display
This feature is available for the packing, checkweighing and grading functions. For the packing and

checkweigh functions, this feature can be set to operate as specied in the preceeding table. Any set­ting between 001 and 004 will cause the display in the grading function to ash when any weight above
or equal to the rst, lowest grade weight is detected. Setting 005 is only appicable to the PPC-300WP.

21 - Vibration Compensation
Environments that experience "noise" issues caused by external vibration can set this parameter for a
more stable reading at the cost of a longer response time to calculate a stable weight.

22 - Units at Power On
The units (kg, lb, oz, or lb-oz) that the scale will indicate when it is turned on.

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VI Troubleshooting

The scale automatically detects several errors. The following table describes the various errors that
can be encountered, and provide user-level corrective actions. If these actions fail to correct the error,

please contact a qualied scale technician.

Display Condition Action

Low batteries. Replace all four batteries

with fresh batteries.

Exhausted batteries, scale will
shut off.

Scale will not turn on.
Dead batteries or AC/DC
adapter not connected.

Load over allowable limit at
start up.

Load under allowable limit at
start up.

Attempted to zero a load
greater than allowed.

Replace all four batteries
with fresh batteries.

Replace all four batter­ies with fresh batteries,
or verify proper adapter
is connected to the scale
and plugged into a pow­ered outlet.

Remove all items from the
scale platform and press

the key.

Remove items wedged
under the scale platform

and press the key.

Remove all items from the
scale platform and press

the key.

Zeroed the scale with a load
on the platform, and then
removed the load.

24

Remove all items from the
scale platform and press

the key.

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VI Troubleshooting

Display Condition Action

Overload - there is too much
weight on the scale platform.

Remove weight from the
scale platform until the
load is within the scale
capacity.

Negative weight reading

greater than ve divisions.

Sensor error. Turn the scale off, wait

Circuit error. Turn the scale off, wait

Controller error. Turn the scale off, wait

Replace the stainless
steel pan on the scale
platform, if removed.
Remove all items from the
scale platform and press

the key.

one minute, and then turn
the scale back on.

one minute, and then turn
the scale back on.

one minute, and then turn
the scale back on.

Additional troubleshooting steps require the services of a qualied scale technician. Do not attempt to

service the scale yourself.

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YCO-1127-12-08

YAMATO CORPORATION

1775 S. Murray Blvd.
Colorado Springs, CO 80916 USA

www.YamatoCorp.com

Tel [phone] Fax [phone]

YAMATO TECH CORPORATION

#112-19425 Langley By-Pass
Surrey, B.C. V3S 6K1 Canada
Tel [phone] Fax [phone]

YCO-1127-12-08