CAS ED Service 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
DISPLA Y 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] Æ select 0, 1 (0:kg, 1: lb) Æ [TARE]
“CAPA” Æ [TARE] Æ select capacity Æ [TARE]
“MCAPA” Æ [TARE] Æ select mid-capacity Æ [TARE]
“W-dP” Æ [TARE] Æ Select Decimal Point Æ [TARE]
“ 1 d ” Æ [TARE] Æ Select division Æ [TARE]
“Dual” Æ [TARE] Æ Enable dual interval (0:disable, 1:enable) Æ TARE
CAL 11
Set nation(00 : OIML , 01 : NTEP , 02: KOREA)
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