CAS PR-T Series, PR-T–6, PR-T–15, PR-T–32 Service Manual
PR-T Service Manual
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PR-T SERVICE MANUAL
PR-T Service Manual
2 8/31/2015
< Table of Contents >
1. Introduction ......................................................................................................................... 3
1.1. Preface ............................................................................................... 3
1.2. Precaution .......................................................................................... 3
1.3. Specifications ..................................................................................... 4
1.4. Dimension ........................................................................................... 5
1.5. Key & Symbols .................................................................................... 6
1.6. SealingMethod .................................................................................... 7
2. Calibration ............................................................................................................................. 8
2.1. General Calibration ............................................................................. 8
2.1.1. C4 Setting C4-1 Setting ............................................................................... 9
2.1.2. SPAN Calibration Setting (C-3) ..... 오류! 책갈피가 정의되어 있지 않습니다.
2.1.3. Gravity Constant Value Setting (C-9) ......................................................12
2.1.4. Calibration factor Setting (C-10) ...............................................................12
2.1.5. Displaying Real A/D Value (C-5) .. 오류! 책갈피가 정의되어 있지 않습니다.
2.1.6. Input Function Key Code (C-6) ..... 오류! 책갈피가 정의되어 있지 않습니다.
2.1.7. Percent Calibration (C-7) ................ 오류! 책갈피가 정의되어 있지 않습니다.
2.1.8. Battery Calibration (C-8) ................ 오류! 책갈피가 정의되어 있지 않습니다.
3. Error Messages & Solution ............................................................................................ 15
4. The Schematics and Diagram ...................................................................................... 16
4.1. System Block Diagram ...................................................................... 16
4.2. Circuit Diagram ................................................................................. 17
4.2.1. Main ................................ ................................ ................................ .....................17
4.2.2. Power Part ........................................................................................................18
4.2.3. Key Part .............................................................................................................19
4.2.4. Display Part ......................................................................................................20
5. Exploded View ................................................................................................................... 21
5.1. BODY ................................................................................................ 21
5.2. Load Cell drawing ............................................................................. 22
6. Part ........................................................................................................................................ 23
6.1. Part Location .................................................................................... 23
6.1.1. Main PCB (Bottom) .........................................................................................24
6.1.2. Front Display PCB (Top) ...............................................................................25
6.1.3. Front Display PCB (Bottom) ........................................................................26
6.1.4. Rear Display PCB (Top) ................................................................................27
6.1.5. Rear Display PCB (Bottom) .........................................................................27
6.1.6. Pole Display PCB (Top) .................................................................................28
6.1.7. Pole Display PCB (Bottom) ..........................................................................29
6.2. Part Order List .................................................................................. 30
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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 PR 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
PR-T – 6 PR-T – 15 PR-T – 32
Capacity
Single Interval
6 kg / 0.001 kg
Single Interval
15 kg / 0.002 kg
Single Interval
32 kg / 0.005 kg
Internal
Resolution
1 / 60,000 1 / 60,000 1 / 60,000
External
Resolution
1 / 6,000 1 / 7,500 1 / 6,400
Display
7 / 7 / 7(Total price / Weight / Unit price)
Symbols Power, Battery, Zero, Stable, Tare, Discount, Caps, Sum
Interface RS232
Keys
Number(0~9), Direct PLU(01~30),
ZERO, TARE, Feed, Discount, Menu, PLU call, Total,
Add, Void, Clear, Multiply, Print
Function
Direct PLU(30)
Ticket Printing scale
Low Battery Indication function
Auto Power Off
Product Size
333.5(W) X 396.2(D) X 448(H)
Product
Weight
3.8 kg
Platter Size 324(W) X 214(D)
Operating
Temperature
- 10 C ~ +40 C
Power
Source
AC( 220V-240V, 50Hz/60Hz), Pb Battery(12V 2.6AH)
Power
Consumption
APPROX 4.0W
Options Recharge Battery
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1.4. Dimension
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1.5. Key & Symbols
■ Function keys
KEYS
FUNCTIONS
SALES MODE PROGRAM MODE
~
To input all numerical data
To input double zero
To clear all of numbers
input on the display
To set zero
To set or clear tare value
To go to program mode
To call up a PLU with
numeric key
To input non-weighed
item
SHIFT : To select
alternate key functions
To show subtotal / total /
payment sum
~
Direct PLU keys
Alphabet Key(A~Z key)
To change key map
Table 2 : Symbols on Display
SYMBOLS DESCRIPTION
Stable Indicator
To adjust the weight to zero.
Tare on
In the subtotal mode
Discount price
To adjust the weight to zero.
AC Power On
Low battery warning when it is below residual 20 %
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1.6. SealingMethod
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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 mid-capacity weight →
“FULL” → [TARE] after loading for Full weight →
“MIDD” → [TARE] after loading for mid-capacity weight → “END”
CAL 4
Option Setting ( Table 1 참조 )
CAL 5
Display filtered Raw ADx
CAL 6
Function setting on each Key ( Table 2 참조 )
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
CAL 11
Set nation(00 : OIML , 01 : NTEP , 02: KOREA)
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< Modes >
2.1.1. 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
2.1.2. C4 Setting
1) C4-1 Setting
BIT 6~7 Initial Zero range
3 5%
2 10%
1 3%
0 2%
BIT5 Tare Type
0 Proper tare
1 Full Tare
BIT4
BIT 2~3
Successive tare
3 (+), (-) Direction successive Tare
2 (-) Direction successive Tare
1 (+) Direction successive Tare
0 One Time tare
BIT1
BIT0
2) C4-2 Setting
BIT7
BIT6 Use PLU Tare 1 Use
BIT5 Use PLU Name
0 Don't use
1 Use
BIT4 Use Daily Total
0 Don't use
1 Use
BIT3 Clear Price 0 Don't clear
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1 Clear
BIT2 Clear Tare
0 Don't clear
1 Clear
BIT1 Use Euro
0 Don't use
1 Use
BIT0 Power On Euro
0 No
1 Yes
3) 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 clear
1 Clear
BIT2 Use oz
0 Don't clear
1 Clear
BIT1 Use lb
0 Don't use
1 Use
BIT0 Use Kg
0 No
1 Yes
4) C4-4 Setting
BIT7 X
BIT6 X
BIT 4~5 Price round off
3 00, 25, 50, 75
2 00, 10, 20
1 0, 5
0 normal
BIT3 X
BIT2 X
BIT 0~1 Unit / Price
3 1000/1
2 100/1
1 10/1
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0 1/1
5) C4-5 Setting
BIT7 Use Standby time
0 Don't use
1 Use
BIT6 Price decimal point
7 Special case
6 O.OOOOOO
5 O.OOOOO
4 O.OOOO
3 O.OOO
2 O.OO
1 O.O
0 O
BIT3 Use Unit message
0 Don't use
1 Use
BIT2 Use Total price window over
0 Don't use
1 Use
BIT 0~1 Print type
3 Don't use
2 DEP-50
1
0
2.1.3. 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.
(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
2.1.4. 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 ‘+5V’.
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(5) Press [ZERO] key two times and then Press [-] key two times.
And then it display ‘500’
(6) Change the jumper-pin of main PCB, ‘+5V’ to ‘BAT’.
(7) You can see the calibrated voltage of battery.
2.1.5. Gravity Constant Value Setting (C-9)
Current gravitational Acceleration value is set to 9.7994 m/s2 .
(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 “C-9”.
(3) Press [TARE] key, and then “ G-1“ message and “9.7994” will be shown. The first digit,”9” will
blink.
(4) Input a gravitational acceleration value by using [ZERO] key.
(5) Press [TARE] key, and then “G-2“ message blinks.“9.7994” will be shown. The first digit,”9” will
blink.
(6) Input a gravitational acceleration value by using [ZERO] key.
(7) Press [TARE] key to save the gravitational acceleration value, and “C-9 ” message will be
shown.
2.1.6. 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)”
(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”
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