CAS ED Series User manual

ED Service Manual
1 04/12/10
ED SERVICE MANUAL

ED Service Manual
2 04/12/10
< Table of Contents >
1. Introduction ............................................................................................................................... 4
1.1. Preface .................................................................................................................................... 4
1.2. Precaution............................................................................................................................. 4
1.3. Specification ........................................................................................................................ 5
1.4. Sealing Method................................................................................................................... 7
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. C4-2 Setting................................................................. 10
2.1.1.3. C4-3 Setting................................................................. 10
2.1.1.4. C4-4 Setting................................................................. 11
2.1.1.5. C4-5 Setting................................................................. 11
2.1.2. SPAN Calibration Setting (C-3).............................................................. 12
2.1.3. Gravity Constant Value Setting (C-9)................................................ 12
2.1.4. Calibration factor Setting (C-10).......................................................... 13
2.1.5. Displaying Real A/D Value (C-5).......................................................... 13
2.1.6. Percent Calibration (C-7).......................................................................... 14
2.1.7. Battery Calibration (C-8)........................................................................... 14
3. The Schematics and Diagram......................................................................................... 15
3.1. System Block Diagram................................................................................................. 15
3.2. Circuit Diagram ................................................................................................................ 16
3.2.1. MAIN...................................................................................................................... 16
3.2.2. DISPLAY & MODULE ................................................................................................. 17
4. Exploded View......................................................................................................................... 18
5. Load Cell drawing.................................................................................................................. 19
6. Part Location............................................................................................................................ 20
Main PCB Part Location................................................................. 20
COMMON PCB........................................................................................................................... 22
RS-232 MODULE PCB Part Location............................................... 22
RS-232 PCB (TOP)................................................................................................................. 22
RS-232 PCB (BOTTOM)....................................................................................................... 22
KEY PCB Part Location .................................................................. 23
KEY PCB......................................................................................................................................... 23
7. Error Messages & Solution............................................................................................... 24

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8. Part List....................................................................................................................................... 25

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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 ED 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. Specification
MODEL
ED 3 ED 6 ED 15 ED 30
CAPACITY
1.5kg/0.0005kg
3kg/0.001kg 3kg/0.001kg 6kg/0.002kg 6kg/0.002kg 15kg/0.005kg 15kg/0.005kg 30kg/0.01kg
3lb/0.001lb
6lb/0.002lb 6lb/0.002lb 15lb/0.005lb 15lb/0.005lb 30lb/0.01lb 30lb/0.01lb 60lb/0.02lb
50oz/0.02oz
100oz/0.05oz 100oz/0.05oz 200oz/0.1oz 250oz/0.1oz 500oz/0.2oz 500oz/0.2oz 1000oz/0.5oz
TARE
SUBTRACTION
1.4995kg 2.999kg 5.998kg 14.995kg
2.999lb 5.998lb 14.995lb 29.99lb
49.98 oz 99.95 oz 249.9 oz 499.8 oz
INTERNAL
RESOLUTION 1/60,000 1/60,000 1/60,000 1/60,000
EXTERNAL
ESOLUTION DUAL 1/3,000
DISPLAY LCD 6 digits
DISPLAY LAMP STABLE, ZERO, HOLD, NET, HI/OK/LO, lb, oz
%, PCS, SUM, kg, Low Battery
INTERFACE RS-232C(Printer)
POWER SOURCE DC 12V 1.25A Adaptor
6V 3.6AH Pb Battery
TEMPERATURE
RANGE -10°C ~ +40°C
PLATTER SIZE (W
D)mm 306 (W) X 222 (D)
PRODUCT SIZE (W
D H)mm 330 (W) X 346 (D) X 107 (H)
MINIMUM
VOLTAGE LEVEL OF
THE BATTERY About 5.6V

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Display Three LCDs with 6 digits, POWER LED
Power 12 V Adaptor or PB BATTERY (6V3.6AH/20HR)
Option Backlight
Auto Power Off

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1.4. 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 ( Table 1 참조 )
CAL 5 Display filtered Raw AD
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” Æ[TARE] Æselect 0, 1 (0:kg, 1: lb) Æ[TARE]
“CAPA” Æ[TARE] Æselect capacity Æ[TARE]
“MCAPA” Æ[TARE] Æselect mid-capacity Æ[TARE]
“W-dP” Æ[TARE] ÆSelect Decimal Point Æ[TARE]
“ 1 d ” Æ[TARE] ÆSelect division Æ[TARE]
“Dual” Æ[TARE] ÆEnable dual interval (0:disable, 1:enable) ÆTARE
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 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
2.1.1.2. 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
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
2.1.1.3. C4-3 Setting
BIT7 Dot Type
0 "." dot
1 "," comma
BIT6 Use Preset tare 0 Don't use