Acom JW-1C User manual

ACOM
OWNER'S MANUAL
MODEL : JW-1C
COUNTING BALANCE
Zero
Net
Stable

COUNT 
/ Pcs
MAX:500g
MIN:1g
e = 0.05g
JW-1C
67890
C54321
WEIGHT / g UNIT WEIGHT / g
UNIT
WEIGHT

WEIGHT
SAMPLE
SUMADD TARE
M M
VER 1.00

TABLE OF CONTENTS
SPECIFICATIONS ......................................................... 1
NOMENCLATURE ......................................................... 1
FUNCTION KEYS .......................................................... 2
DISPLAY ........................................................................ 3
UNPACKING & ASSEMBLY .......................................... 4
SAFETY PRECAUTIONS .............................................. 5
OPERATING THE BALANCE ......................................... 5
TROUBLESHOOTING & ERROR MESSAGES ............ 10
CALIBRATION ............................................................... 11
PREFACE
ACOM Corporation would like to thank you for purchasing our model JW-1C
accurate counting balance. We are committed to creating high quality low
maintenance products and supplying our customers with diligent customer
service. This manual contains information on the proper assembly and use of
the scale.
Disclaimer:
This company makes no representations or warranties, either
expressed or implied, with respect to the contents hereof and
specifically disclaims any warranties of merchantability or fitness for
any particular purpose. Any software described in this manual is sold
or licensed “as is”. Should the programs prove defective following their
purchase, the buyer (and not this company, its distributors, or its
dealers) assumes the entire cost of all necessary servicing, repair, and
any incidental or consequential damages resulting from any defect in
the software. Further, this company reserves the right to revise this
publication and to make changes from time to time in the contents
hereof without obligation to notify any person of such revision or
changes.
Brand and product names are trademarks and/or registered trademarks of
their respective companies.

Specifications
Model: JW-1C
Maximum Capacity: 200 g 500 g 1,000 g 2,000 g
Minimum Graduation: 0.02 g 0.05 g 0.1 g 0.2 g
Maximum Tare: Full Capacity
External Resolution: 1/10,000
A/D Conversion Rate: 6 Updates / second (adjustable)
Units & Modes: gram, piece, percent, carat, ounce, pound,
pennyweight, grain, kilogram, and Trojan ounce.
Weight: 5 Digits 99999 max
LCD Display: Unit Weight: 6 Digits 999999 max
Count: 6 Digits 999999 max
Platter Size: 123 mm (4.84”) Diameter 180 mm (7.09”) Diameter
Width: 275 mm (10.82”)
Product Dimensions: Depth: 235 mm (9.25”)
Height: 70 mm (2.75”)
Product Weight: 1.1 kg (2.4 lb)
Input: 115 Volts AC, @ 60 Hz
Power Requirements: Output: 9 Volts DC, 300 mA
Battery: 6 AA Cells (6 x 1.5 = 9 VDC)
Operating Temp: 10℃~ 30℃(50。F ~ 86。F)
Nomenclature
1
Zero
Net
Stable

COUNT 
/ Pcs
MAX:500g
MIN:1g
e = 0.05g
JW-1C
67890
C54321
WEIGHT / g UNIT WEIGHT / g
UNIT
WEIGHT

WEIGHT
SAMPLE
SUMADD TARE
M M
Platter
Power switch
Level adjusters
Level indicator
Display
Key board
1000g & 2000g

Function Keys
2
C
✱
ZERO
TARE
Numeric keys, used to enter piece weight, tare,
programming, etc.
Clear key, used to release error conditions and to clear
erroneous entries.
Zero key, used to manually set the zero point.
Tare key, used to enter tares and clear tares.
~90
200g & 500g
Zero
Net
Stable

COUNT 
/ Pcs
MAX:500g
MIN:1g
e = 0.05g
JW-1C
67890
C54321
WEIGHT / g UNIT WEIGHT / g
UNIT
WEIGHT

WEIGHT
SAMPLE
SUMADD TARE
M M
Calibration Switch
Zero
Net
Stable

COUNT 
/ Pcs
MAX:500g
MIN:1g
e = 0.05g
JW-1C
67890
C54321
WEIGHT / g UNIT WEIGHT / g
UNIT
WEIGHT

WEIGHT
SAMPLE
SUMADD TARE
M M
Platter
Power switch
Level adjusters
Level indicator
Display
Key board
Decimal Point key, used to enter a decimal point.
•

Display
Zero lamp indicates that the balance is at net or gross zero.
Net lamp indicates that there is a tare set and that the displayed weight is the
net weight. When it is off, it means that the displayed weight is the gross
weight.
Stable lamp indicates that the weight on the balance is stable.
3
Unit Weight key, used to enter the piece weight. The
piece weight is also called the unit weight.
Sample key, used to take samples from a known count
and determine the piece weight.
Add key, used to add the current count to a running
total.
Sum key, used to totalize the running total generated by
the Add key.
Memory Write key, used to store PLUs.
Memory Recall key, used to recall PLUs.
UNIT
WEIGHT
ADD
SUM
SAMPLE
M
M
Zero
Net
Stable
COUNT 
Pcs
MAX:1kg
MIN:2g
e = 0.1g
JW-1C
WEIGHT / g UNIT WEIGHT / g

Unpacking & Assembly
Your JW-1C balance should come with the following:
NO Parts Name Units QTY
4-1 IN CARTON BOX EA 1
4-2 STYROFOAM EA 2
4-3 BODY POLY BAG EA 1
4-4 ADAPTER EA 1
4-5 MANUAL EA 1
4-6 PLATTER EA 1
4-7 PLATFORM EA 1
4-8 BALANCE EA 1
4-9 SILICA DESICANT EA 2
4
4-1
4-2 

4-3 

4-4 

4-5 

4-6
4-7
4-8
4-9

Safety Precautions
❏
Place the balance on a flat and rigid surface
❏
Place the balance far from strong RF interference
❏
Level the balance using its adjustable feet
❏
Do not subject the platter to sudden impacts
❏
Do not spill the water or any other liquid on the balance
❏
Do not use any solvents to clean the balance
❏
Do not leave the balance in direct sunlight
Operating the Balance
Make sure the platter is sitting properly on top of the platform and that there is
nothing on top of the platter. Also, make sure that the balance is plugged into
the proper outlet. Place the power switch into the ON position. The balance
displays will run through a self test, count down to zero, and then beep. All of
your displays should look as follows (remember that the decimal place and
number of zeros on the Weight display may differ depending on the capacity of
the balance):
This example is the JW-1C 200g balance.
Manual Tare Entry
1. Make sure the Zero and Stable Lamps are on.
2. Type the tare weight of the item that you wish to tare. Do not use the
decimal point key as the balance will always automatically insert the
decimal point.
3. Press the TARE key.
5
Zero
Net
Stable
COUNT 
Pcs
MAX:1kg
MIN:2g
e = 0.1g
JW-1C
WEIGHT / g UNIT WEIGHT / g

Platter Tare Entry
1. Make sure the Zero and Stable Lamps are on.
2. Place the item you wish to tare onto the platter.
3. Make sure that the Stable Lamp is on.
4. Press the TARE key.
Counting by Unit Weight Entry
1. Make sure the Zero and Stable Lamps are on.
2. Follow the platter or manual tare entry procedures if necessary.
3. Place the parts that you wish to count on the platter.
4. Type the unit weight. You may use the decimal key if necessary.
5. Make sure that the Stable Lamp is on.
6. Press the UNIT WEIGHT key.
Steps 3 & 4 can be interchanged. The balance will now display a unit weight
and a count. The balance may also flash the Ls or Lu Lamps depending on
certain criteria specified on page 4. You can begin counting.
Counting by Sample Entry
1. Make sure the Zero and Stable Lamps are on.
2. Follow the platter or manual tare entry procedures if necessary.
3. Place the parts that you wish to count on the platter.
4. Enter the number of parts that you placed on the platter by using the
numeric keys. You cannot use the decimal key.
5. Make sure that the Stable Lamp is on.
6. Press the SAMPLE key.
Steps 3 & 4 can be interchanged. The balance will now display a unit weight
and a count. You can begin counting.
Counting by Using PLUs
1. Make sure the Zero and Stable Lamps are on.
2. Place the parts that you wish to count on the platter.
3. Enter the PLU number of the part that you wish to count. PLU
numbers range from 0 to 31.
4. Make sure that the Stable Lamp is on.
5. Press the M key.
Steps 2 & 3 can be interchanged. The balance will now display a unit weight
and a count. You can begin counting.
6

Using the ADD Function
1. Get into counting mode by using any of the 3 ways of counting
(counting by unit weight, sample, or PLU.)
2. Place the batch of parts that you wish to add onto the platter.
3. Make sure that the Stable Lamp is on.
4. Press the ADD key. The displays will show:
5. The Count display above shows 500 as an example.
The number in the Count Display represents the Running Total Count.
The Number in the Unit Weight display shows the number of times
batches have been added to the Running Total Count.
6. Remove the batch of parts that have just been added.
7. If there is another batch of parts you wish to add go to step 2 otherwise
continue on to step 8.
8. Press the SUM key. The displays will show:
9. The Count display above shows 5000 as an example.
The number in the Count Display represents the Running Total Count.
The Number in the Unit Weight display shows the number of batches
that have been added to the Running Total Count.
10. If you wish to add more batches then press the SUM and return to step
2; otherwise, you can press the C key to clear the current Running
Total and start a new one.
7
Zero
Net
Stable
COUNT 
Pcs
MAX:1kg
MIN:2g
e = 0.1g
JW-1C
WEIGHT / g UNIT WEIGHT / g
Zero
Net
Stable
COUNT 
Pcs
MAX:1kg
MIN:2g
e = 0.1g
JW-1C
WEIGHT / g UNIT WEIGHT / g

Program Mode
Programming PLUs by Sample:
1. Make sure the Zero and Stable Lamps are on.
2. Place the parts that you wish to count on the platter.
3. Enter the number of parts that you placed on the platter by using the
numeric keys. You cannot use the decimal key.
4. Make sure that the Stable Lamp is on.
5. Press the SAMPLE key.
6. Press the Mkey. The displays will show:
7. Enter the tare weight for this PLU using the numeric keys. You may
use the decimal key if necessary.
8. Press the Mkey. The displays will show:
The Number in the Unit Weight display represents the PLU number. It
can range from 0 to 31 for a total of 32 PLUs.
9. Enter the PLU number using the numeric keys. Keep in mind that if
you use an existing PLU number it will be overridden by the new data
that you have just entered.
10. Press the Mkey. The PLU is stored.
8
Zero
Net
Stable
COUNT 
Pcs
MAX:1kg
MIN:2g
e = 0.1g
JW-1C
WEIGHT / g UNIT WEIGHT / g
Zero
Net
Stable
COUNT 
Pcs
MAX:1kg
MIN:2g
e = 0.1g
JW-1C
WEIGHT / g UNIT WEIGHT / g

Programming PLUs by Unit Weight Entry:
1. Make sure the Zero and Stable Lamps are on.
2. Type the unit weight of the part. You may use the decimal key if
necessary.
3. Press the Mkey. The displays will show:
4. Enter the tare weight for this PLU using the numeric keys. You may
use the decimal key if necessary.
5. Press the Mkey. The displays will show:
The Number in the Unit Weight display represents the PLU number. It
can range from 0 to 31 for a total of 32 PLUs.
6. Enter the PLU number using the numeric keys. Keep in mind that if
you use an existing PLU number it will be overridden by the new data
that you have just entered.
7. Press the Mkey. The PLU is stored.
9
Zero
Net
Stable
COUNT 
Pcs
MAX:1kg
MIN:2g
e = 0.1g
JW-1C
WEIGHT / g UNIT WEIGHT / g
Zero
Net
Stable
COUNT 
Pcs
MAX:1kg
MIN:2g
e = 0.1g
JW-1C
WEIGHT / g UNIT WEIGHT / g

Troubleshooting & Error Messages
Error Message Table
Display Definition Solution
Initial zero point failure.
E
2
PROM failure. Contact Service.
A/D Converter failure. Contact Service.
Lost memory. Possibly reprogram and recalibrate.
Contact Service.
Brand and product names are trademarks and/or registered trademarks of
their respective companies.
10
Turn scale on with nothing on or
obstructing the platter.
Turn scale on with the platter properly
placed on the scale.

Calibration
The following procedure describes how to Zero Calibrate and Span calibrate
the balance. These two are always done together.
Calibration
1. Turn scale off and remove the platter.
2. Locate the CAL Switch (rear of platform).
3. Press and hold down the CAL Switch while you turn on the scale.
4. Once the display reads , release the CAL Switch.
5. Replace the platter on the platform.
6. Press the
✱ key.
7. After the STABLE lamp turns on, press the
✱ key.
8. The scale will display and then show .
9. Press the
✱ key.
10. Once the STABLE lamp turns on, place the mass weight on the platter.
This mass must be equal to exactly the balance’s capacity in
grams.
11. After the STABLE lamp turns on, press the
✱ key.
12. The scale will display , then show , and then show .
✝
13. Remove mass weight from the platter.
14. Turn scale off and then back on.
✝
NOTE: The balance may show or at this point instead of
.
If it displays then the mass weight that you are using to calibrate is
too heavy or the scale may need servicing (the load cell may have been
overloaded or shock loaded.)
If it displays then the mass weight that you are using to calibrate is
too light or the scale may need servicing (the scale may have been dropped or
mistreated.)
11

Acom Inc.
#679-1, YUGO-RI, GUNNAE-MYUN, POCHEON-GUN
KYUNGGI-DO, 487-872, KOREA
http://www.acominc.co.kr
Copyright 2004, All rights reserved.