CAS FW500 User manual

FW500 Service Manual
1 8/31/2015
FW500 SE. SERVICE MANUAL
(Revision 0 / 2013.02.19)

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< Table of Contents >
1. Introduction ..................................................................................... 2
1.1. Preface......................................................................................... 3
1.2. Precaution .................................................................................... 3
1.3. Specifications ............................................................................... 4
1.4. Key .............................................. 오류! 책갈피가 정의되어 있지 않습니다.
1.5. Dimension .................................... 오류! 책갈피가 정의되어 있지 않습니다.
1.6. Sealing Method ............................. 오류! 책갈피가 정의되어 있지 않습니다.
2. Calibration ........................................................................................ 9
2.1. General Calibration ....................................................................... 9
2.1.1. C4 Setting ........................................................................ 10
2.1.1.1. C4-1 Setting................................................................ 10
2.1.1.2. C4-3 Setting................................................................ 10
2.1.2. SPAN Calibration Setting (C-3) ......................................... 11
2.1.3. Gravity Constant Value Setting (C-9) ................................ 11
2.1.4. Calibration factor Setting (C-10) ...................................... 11
2.1.5. Displaying Real A/D Value (C-5) ....................................... 12
2.1.6. Percent Calibration (C-7) ................................................. 13
2.1.7. Battery Calibration (C-8) .................................................. 13
3. The Schematics and Diagram ........................................................... 14
3.1. System Block Diagram ................................................................. 14
3.2. Circuit Diagram ........................................................................... 15
3.2.1. FW500C Main PCB ............................................................ 14
3.2.2. FW500C Rear Display PCB . 오류! 책갈피가 정의되어 있지 않습니다.
3.2.3. FW500E Main PCB ............................................................ 16
3.2.4. FW500E Rear Display PCB ................................................ 16
4. Exploded View ............................................................................... 209
5. Load Cell drawing ............................................................................ 20
6. Part Location ................................................................................... 21
6.1. FW500C Main PCB (Top,Bottom) .................................................. 21
6.2. FW500E Main PCB (Top,Bottom) .................................................. 22
6.3. FW500C Rear Display PCB (Top,Bottom) ...................................... 23
6.3. FW500E Rear Dislpay PCB (Top,Bottom) ...................................... 24
7. Error Messages & Solution............................................................................................26
8. Part List ..................................................................................................................................27

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1. Introduction
1.1. Preface
Thank you for purchasing of our CAS scale.
This scale has been designed with CAS reliability, under rigid quality control
and with outstanding performance.
WE hope that your departments enjoy with high quality of CAS product.
This manual will help you with proper operations and care of the FW500 series.
Please keep it handy for the future references.
1.2. Precaution
 Make sure that you plug your scale into the proper power outlet.
 Place the scale on a flat and stable surface.
 Plug into a power outlet 30 minutes before operations.
 Keep the scale away from strong EMI noises may cause incorrect weight readings.
 This scale must be installed in a dry and liquid free environment.
 Do not subject the scale to sudden temperature changes.
 Do not subject the platter to sudden shocks.
 If the scale is not properly level, please adjust the 4 legs at the bottom of the
scale (turn legs clockwise or counterclockwise) so as to center the bubble of the
leveling gauge inside the indicated circle.

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1.3. Specifications
FW500-C
MODEL FW500-C
Approval Max 3/6 kg
e=d=1/2 g
Max 6/15 kg
e=d=2/5 g
Max 15/ 30 kg
e=d=5/10 g
External
Resolution 1/3,000 dual 1/3,000 dual 1/3,000 dual
MAX Tare -2.999 kg -5.998 kg -14.995 kg
Display 110 x 35[mm]/43" x 13.8" 5 digit LCD
Symbols STABLE, ZERO, TARE, g, kg, lb, oz, Low Battery
Keys ZERO, TARE, HOLD(Hold Ver.), UNIT(Unit Ver.), POWER
Functions
Weighing, WaterProof level IP-69k
Hold(Hold Ver.), Unit Conversion(Unit Ver.),
Sleep Mode Function
Dimensions 303 x 266 x 109 mm
Platter size 212 x 247 mm
Weight 2.7 Kg (Without Battery )
Power 1.5V x 4 units (D size Battery) or 12V 300mA Adapter
Operation
Time
Approx. 1200hours (Manganese battery)/
2500hours (Alkaline at 20°C /68°F)
Operating
Temperature -10°C ~ +40°C / 14°F ~ 104°F
Minimum Voltage
Level of The Battery About 3.3V
Option 12V Adapter 300mA, Rear Display
※ Notice: Specifications are subject to change for improvement without notice.

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FW500-E
MODEL FW500-E
Approval Max 3/6 kg
e=d=1/2 g
Max 6/15 kg
e=d=2/5 g
Max 15/ 30 kg
e=d=5/10 g
External
Resolution 1/3,000 dual 1/3,000 dual 1/3,000 dual
MAX Tare -2.999 kg -5.998 kg -14.995 kg
Display 75 x 19 [mm] 6 digit LED
Symbols STABLE, ZERO, TARE, Charge, Low Battery
Keys ZERO, TARE, HOLD(Hold Ver.), UNIT(Unit Ver.), POWER
Functions
Weighing, WaterProof level IP-69k
Hold(Hold Ver.), Unit Conversion(Unit Ver.),
Sleep Mode Function
Dimensions 303 x 266 x 109 mm
Platter size 212 x 247 mm
Weight 2.7 Kg (Without Battery )
Power 6 V 3.2Ah Pb battyery , 12V 300mA Adapter
Operation
Time Approx. 100hours (PB battery)
Operating
Temperature -10°C ~ +40°C / 14°F ~ 104°F
Minimum Voltage
Level of The Battery About 3.3V
Option 12V Adapter 300mA, Rear Display
※ Notice: Specifications are subject to change for improvement without notice.
Key
Key Function
ZERO (-O-)
[Set]
To set zero point
To do [SET] key in the SETUP mode.
TARE To input or cancel the tare (the weight of container).
HOLD To make the weight of item stable. This weight is average value.
POWER To turn on or off.

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1.4. Dimension

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1.5. Dimension [TILTING DISPLAY TYPE]

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1.6. Sealing method

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2. Calibration
2.1. General Calibration
Pressing and holding calibration switch press [POWER] key to go to calibration mode.
User can move to other mode by using [ZERO] key in the calibration mode.
User also moves to other sub-modes for each mode by using [TARE] key.
Please simply follow below procedure to move to other mode.
(1) Calibration Mode: Pressing and holding “Calibration Switch” press [POWER] key.
(2) It displays “CAL-0” after “CAL”, and it blinks the version of scale three times.
(3) Selecting menu: press [TARE].
(4) ENTER(Setting) : [TARE] key
MODE Function
CAL 1 Display normalized AD
CAL 2 Display Keypad infomation-
CAL 3
Weight Setting Mode
→ →
“UnLoad” [TARE]
→ →
“MIDD” [TARE] after loading for 1/3 weight
→ →
“FULL” [TARE] after loading for Full weight
→ →
“MIDD” [TARE] after loading for 1/3 weight “END”
CAL 4 Option Setting ( Refer to Table 1)
CAL 5 Display filtered Raw AD
CAL 7 % Calibration
CAL 8 Battery calibration
CAL 9 Gravity constant
CAL 10
Set calibration factor
“Unit”  [TARE]  select 0, 1 (0:kg, 1: lb)  [TARE]
“CAPA”  [TARE]  select capacity  [TARE]
“MCAPA”  [TARE]  select mid-capacity  [TARE]
“W-dP”  [TARE]  Select Decimal Point  [TARE]
“ 1 d ”  [TARE]  Select division  [TARE]
“Dual”  [TARE]  Enable dual interval (0:disable, 1:enable)  [TARE]
“tare”  [TARE]  Enable custom tare (0:disable, 1:enable)  [TARE]
CAL 11 Set nation(00 : OIML , 01 : NTEP , 02: KOREA)

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< Modes >
2.1.1. C4 Setting
2.1.1.1. C4-1 Setting
BIT 6~7 Initial Zero range
3 5%
2 10%
1 3%
0 2%
BIT5 Last digit enable
0 Disable
1 Enable
BIT4 Key zero percent
0
±3% key zero percent
1
±2% key zero percent
BIT 2~3 Successive tare
3 (+), (-) All Direction successive Tare
2 (+) Direction successive Tare
1 (-) Direction successive Tare
0 One Time tare
BIT0~1 Zero mark type
0 Gross zero indication
1 Net zero indication
2 Both(gross and net) zero indication
2.1.1.2. C4-3 Setting
BIT7 Dot Type
0 "." dot
1 "," comma
BIT6 Use Preset tare
0 Don't use
1 Use
BIT5 Use Back light
0 Don't use
1 Use
BIT4 Use Head message
0 Don't use
1 Use
BIT3 Use gram
0 Don't use
1 Use
BIT2 Use oz
0 Don't use
1 Use
BIT1 Use lb
0 Don't use
1 Use
BIT0 Use Kg
0 Don't use
1 Use

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2.1.2. SPAN Calibration Setting (C-3)
(1) Pressing and holding “Calibration Switch” press [POWER] key.
After “CAL” message blinks three times and shows the version of scale, it displays “CAL
1” message.
(2) Press [ZERO] to display “CAL-3”.
(3) Press [TARE] key and then it displays “zero ” message.
(4) Press [TARE] key and then it displays “midup” message
(5) Load middle weight (ex:1/3 full capacity) on the platform
(6) Press [TARE] key and then it displays “span ” message
(7) Load full weight on the platform
(8) Press [TARE] key and then it displays “middn” message
(9) Load middle weight (ex:1/3 full capacity) on the platform
(10) Press [TARE] key and then it display “CAL 3” message
2.1.3. Gravity Constant Value Setting (C-9)
Current gravitational Acceleration value is set to 9.7994 m/s2 .
(11) Pressing and holding “Calibration Switch” press [POWER] key.
After “CAL” message blinks three times and shows the version of scale, it displays
“CAL-1” message.
(12) Press [ZERO] to display “C-9”.
(13) Press [TARE] key, and then “ G-1“ message and “9.7994” will be shown. The first
digit,”9” will blink.
(14) Input a gravitational acceleration value by using [ZERO] key.
(15) Press [TARE] key, and then “G-2“ message blinks.“9.7994” will be shown. The first
digit,”9” will blink.
(16) Input a gravitational acceleration value by using [ZERO] key.
(17) Press [TARE] key to save the gravitational acceleration value, and “C-9 ” message
will be shown.
2.1.4. Calibration factor Setting (C-10)
(1) Pressing and holding “Calibration Switch” press [POWER] key.
(2) After “CAL” message blinks three times and shows the version of scale, it displays
“CAL-1” message.
(3) Press [ZERO] to display “C-10”.
(4) Press [TARE] key, and then “UNIT “ message and “0” will be shown. The first digit,”0”
will blink. It means calibration unit is “kg” (0 : kg, 1 : lb)
(5) Input a calibration unit by using [ZERO] key.
(6) Press [TARE] key, and then “CAPA“ message blinks.“0015” will be shown. The first
digit,”0” will blink. It means a full-capability is “15 (calibration unit, kg or lb)”

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(7) Input a capability by using [ZERO] key.
(8) Press [TARE] key, and then “MCAPA“ message blinks.“0005” will be shown. The first
digit,”0” will blink. It means a mid-capability is “05 (calibration unit, kg or lb)”
(9) Input a capability by using [ZERO] key.
(10)Press [TARE] key, and then “W-dP “ message blinks.“3” will be shown. The first
digit,”3” will blink. It means a weight decimal point is “3 (will display 0.000)”
(11)Input a weight decimal point by using [ZERO] key.
(12) Press [TARE] key, and then “1d “ message blinks.“0.005” will be shown. The third
digit,”0” will blink. It means a division is “0.005 (calibration unit, kg or lb)”
(13) Input a division by using [ZERO] key.
(14) Press [TARE] key, and then “dual “ message blinks.“1” will be shown. The third
digit,”1” will blink. It means a dual interval is disable. (0 : disable, 1 : enable)”
(15) Input a dual interval enable by using [ZERO] key.
(16) Press [TARE] key to save the calibration factor, and “C-10 ” message will be shown.
2.1.5. Displaying Real A/D Value (C-5)
Display Raw AD

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2.1.6. Percent Calibration (C-7)
(1) Pressing and holding “Calibration Switch” press [POWER] key.
After “CAL” message blinks three times and shows the version of scale, it displays “CAL 1”
message.
(2) Press [ZERO] to display “CAL-7”.
(3) Press [TARE] key and then it displays “per 0 ” message. Select the percent value using
the
[numeric] key. You can choose 10~90 percent. (Last digit of percent must be 0.)
(4) Press [TARE] key and then it displays “zero” message
(5) Press [TARE] key and then it displays “pspan ” message
(6) Load choice percentage weight of full weight on the platform
(7) Press [TARE] key and then it displays “CAL 7” message
2.1.7. Battery Calibration (C-8)
(1) Pressing and holding “Calibration Switch” press [POWER] key.
After “CAL” message blinks three times and shows the version of scale, it displays “CAL 1”
message.
(2) Press [ZERO] to display “CAL-8”.
(3) Press [TARE] key and then it displays voltage of battery.
(4) Change the jumper-pin of main PCB, ‘BAT’ to ‘+3.3V’.
(5) Press [ZERO] key two times and then Press [-] key two times.
And then it display ‘330’
(6) Change the jumper-pin of main PCB, ‘+3.3V’ to ‘BAT’.
(7) You can see the calibrated voltage of battery.

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3. The Schematics and Diagram
3.1. System Block Diagram
Load Cell
REAR
DISPLAY
LCD Display(FW500C)
LED Display(FW500E)
POWER
(12V Adaptor)
FW-500C,E
KEY
ONE MODULE V3
MAIN
BOARD
Dry BATTERY(FW500C)
(1.5V(D type) * 4 )
6 V 3.2Ah Pb bat(FW500E)

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3.2. Circuit Diagram
3.2.1 FW500C Main PCB

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3.2.2 FW500C Rear Display PCB

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3.2.3 FW500E Main PCB

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3.2.4 FW500-E Rear Display PCB

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4. Exploded View
4.1. FW500 (