CAS SW-II Series User manual

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CAS ELECTRICS CO.,LTD
SW-II Series
Service Manual
(English)
2016. 11. 03

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CAS ELECTRICS CO.,LTD
Table of Contents
1. Introduction.........................................................................................................................3
1.1. Preface .......................................................................................................................3
1.2. Precaution...................................................................................................................3
2. Classification........................................................................................................................4
2.1. Overall View ................................................................................................................4
2.2. Specifications ..............................................................................................................4
2.3. Display & Key ..............................................................................................................5
2.3.1. Display ...............................................................................................................5
2.3.2. Key Function .......................................................................................................6
2.4. Dimension...................................................................................................................6
2.4.1. Scale..................................................................................................................6
2.4.2. Loadcell..............................................................................................................7
2.5. Sealing Method ............................................................................................................7
3. Calibration...........................................................................................................................8
3.1. Calibration Mode ..........................................................................................................8
3.2. Span Calibration ........................................................................................................11
4. The Schematics and Diagram............................................................................................... 13
4.1. System Block Diagram................................................................................................13
4.2. Circuit Diagram..........................................................................................................13
4.3. Interface...................................................................................................................13
4.3.1. RS232C Interface (direct) ...................................................................................13
4.3.2. USB Interface....................................................................................................14
5. Firmware Update Method.....................................................................................................14
6. Exploded Views ..................................................................................................................14
7. Parts List...........................................................................................................................15
7.1. Electronic Parts .......................................................................................................... 15
7.2. Mechanical Parts ........................................................................................................18
7.2.1. BODY ASS'Y ......................................................................................................18
7.2.2. UPPER CASE ASS'Y ............................................................................................ 19
7.2.3. TRAY ASS'Y.......................................................................................................20
7.2.4. IMAGE ASS'Y.....................................................................................................20
7.2.5. PLATFORM ASS'Y ............................................................................................... 20
7.2.6. C/T ASS'Y .........................................................................................................21
7.3. PMechanical Parts ......................................................................................................21
7.3.1. Loadcell Parts.................................................................................................... 21
Revision................................................................................................................................22

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CAS ELECTRICS CO.,LTD
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 SW-II.
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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CAS ELECTRICS CO.,LTD
2. Classification
2.1. Overall View
2.2. Specifications
MODEL
SW-ΙΙ
Capacity
Dual
Single
Dual
Single
Dual
Single
Dual
Single
Max
1.5/3kg
Max
3kg
Max
3/6kg
Max
6kg
Max
6/15kg
Max
15kg
Max
15/30kg
Max
30kg
e
e=0.5/1g
e=1g
e=1/2g
e=2g
e=2/5g
e=5g
e=0.5/1g
e=10g
External
Resolution
1/3000
1/3000~
1/30000
1/3000
1/3000~
1/30000
1/3000
1/3000~
1/30000
1/3000
1/3000~
1/30000
MAX Tare
-1.4995 kg
-2.999 kg
-2.999 kg
-5.998 kg
-5.998 kg
-14.995 kg
-14.995 kg
-29.990 kg
Display
115 x 35 [mm]/45 " x 15.5 " 6 digit LCD
Symbols
STABLE, ZERO, TARE, g, kg, lb, oz, Low Battery
HI / OK / LO & PCS
Keys
ZERO/ UNIT, TARE/ HOLD , MODE,FUCTION
Functions
Weighing, Hold, Unit Conversion,
Counting-Counting Sample Range :
10, 20, 50, 100,200, 500
Weight Comparison Function : hi, ok, low
Backlight ON/OFF Control Function
Dimensions
250 (W) x 281 (D) x 110 (H)[mm] / 984 (W) x 111 (D) x 43 (H)[inch]
Platter size
226 (W) x 187 (D)[mm] / 88.97 (W) x 73.62 (D)[inch]
Weight
1.8 kg
Power
1.5 V x 3 units (D size Battery), Pb 4V/4Ah, 6V/500mA Adapter
Operation
Time
Approx. 300 hours (Manganese battery)/
600 hours (Alkaline at 20 °C /68 °F)
Operating
Temperature
-10 °C ~ +40 °C / 14 °F ~ 104 °F
Option
6 V Adapter 500 mA, Pb 4 V4 A,
Rear Display, RS232, USB, SUS TRAY

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CAS ELECTRICS CO.,LTD
2.3. Display & Key
2.3.1. Display
2.3.1.1 LCD Front
2.3.1.1 LCD Rear
2.3.1.3 LED Front
2.3.1.4 LED Rear

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2.3.2. Key Function
KEYS
FUNCTIONS
Used to set the zero point.
Used to input or cancel the weight of tare.
Used to change the unit of weight, and shown as following
sequence on the display. [Kg] [WL on or off] [PCS] [Kg]
Used to select and hold or unit conversion function
+
Used to convert the unit of weight.
+
Used to make the weight of commodity stable.
This weight is average value.
2.4. Dimension
2.4.1. Scale

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2.4.2. Loadcell
2.5. Sealing Method

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3. Calibration
3.1. Calibration Mode
SW-II supports two calibration mode.
Cal mode 1: Calibration after the initialization data
Cal mode 2: Calibration should only proceed again
After turning on the power, while the number is changed to "999999", "888888", "777777" on the display, calibration
jumper short to enter the cal mode 1.
Before turning on the scale, calibration jumper already shorted, turn on power and enter the cal mode 2.
For example, for a 3kg scale, when Cal Mode 1 entry, show as follows:
Since it shows the screen as shown below. The meaning of the figure below is shown in Scale setting Table
[TARE] key and change the settings, select the desired settings, press the [ZERO] key.
Capacity
Mode
Interval
e
Resolution
3 kg
3000
dual
0.5/1
1/3000
3001
single
1
1/3000
3000.5
single
0.5
1/6000
3000.2
single
0.2
1/15000
3000.1
single
0.1
1/30000
6 kg
6000
dual
1/2
1/3000
6002
single
2
1/3000
6001
single
1
1/6000
6000.5
single
0.5
1/12000
6000.2
single
0.2
1/30000
15 kg
15000
dual
2/5
1/3000
15005
single
5
1/3000
15002
single
2
1/7500

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15001
single
1
1/15000
15000.5
single
0.5
1/30000
30 kg
30000
dual
5/10
1/3000
30010
single
10
1/3000
30005
single
5
1/6000
30002
single
2
1/15000
30001
single
1
1/30000
After pressing the [ZERO] key, the display is as follows. When press [TARE] key, digits shift is possible,
pressing the [MODE] key to increase the number. After finishing the setting, press the [ZERO] key to save, and exit
from the menu.
Parameter setting, see below table.
DIGIT
Description
Value
Description
DIGIT 6
Initial Zero range
0
Disable
1
± 10%
DIGIT 5
Vibration Filter
0~9
Filter level
DIGIT 4
Auto Zero Tracking
0~9
0~9 d
DIGIT 3
Zero compensation
0~9
0~9 d
DIGIT 2
Creep compensation
0~9
0~9 d
DIGIT 1
Decimal display
0
. (colon)
1
, (semi-colon)
If you enter cal mode 2, it appears as below:
you can only calibrate span calibration.
Apart from calibration mode, SW-II supports to change user settings and AD tests such as:
(1) Change your settings

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After turning on the power scale, while the display are turned on, press the [TARE] key you can change the
user settings. Press [TARE] key, and move digits (digit shift) is possible, pressing the [MODE] key to
increase the number. After finishing the setting, press the [ZERO] key to save, and exit from the menu.
DIGIT
Description
Value
Description
DIGIT 6
Use Back light
0
Don't use
1
Use
DIGIT 5
Use kg
0
Don't use
1
Use
DIGIT 4
Use lb
0
Don't use
1
Use
DIGIT 3
Use gram
0
Don't use
1
Use
DIGIT 2
Use oz
0
Don't use
1
Use
DIGIT 1
Default Weight
Unit
0
Use kg
1
Use lb
2
Use gram
3
Use oz
(2) AD test function
If after turning on the power scale, press the [MODE] key nit, you can check the AD value. In this case,
press [ZERO] key to exit to the weighing mode.

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3.2. Span Calibration
(1) Pressing and holding “Calibration Switch” press power on/off switch. It displays “0”
message.
(2) Press [TARE] to display “C-line”.
(3) Press [ZERO] key and then it displays “zero” message.

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(4) Press [M] key and then it displays “On1” message
(5) Load middle weight (ex:1/3 full capacity) on the platform
(6) Press [M] key and then it displays “On2 ” message
(7) Load middle weight (ex:2/3 full capacity) on the platform
(8) Press [M] key and then it displays “On3 ” message
(9) Load full weight on the platform
(10) Press [M] key and then, the display will show all the segments and count up "9" to "0".

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4. The Schematics and Diagram
4.1. System Block Diagram
4.2. Circuit Diagram
Please call your CAS dealer.
4.3. Interface
4.3.1. RS232C Interface (direct)
1, 4, 6, 7, 8, 9: Not connected
2: RX DATA
3: TX DATA
5: Ground

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4.3.2. USB Interface
1: Vbus (5V)
2: D-
3: D+
4: Ground
5. Firmware Update Method
Please call your CAS dealer.
6. Exploded Views

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7. Parts List
7.1. Electronic Parts
No
Image
Part Code
Parts
Name
DESCRIPTION
Q'ty
1
6D00-SWL-0000-0
MAIN
PCB ASS'Y
6100-SWL-0000-0
(SW2,PR2)
1
2
6A10SWL01000
DISPLAY
PCB ASS'Y
(FRONT/REAR)
6A10-SWL-0100-0
3
6D10-SWL-0000-0
DISPLAY
PCB ASS'Y
(LCD FRONT)
6D10-SWL-0000-0
(SW2 FRONT)
1
4
6D10-SWL-0001-0
DISPLAY
PCB ASS'Y
(LCD REAR)
6110-SWL-0001-0
(SW2 REAR)
1
5
6D10-SWL-0100-0
DISPLAY
PCB ASS'Y
(LCD FRONT)
6D10-SWL-0100-0
SWII(LCD),WITHOUT
WIRE
1
6
6D10-SWL-0110-0
DISPLAY
PCB ASS'Y
(LCD REAR)
6D10-SWL-0110-0
SWII(LCD),WITHOUT
WIRE
1
7
6D10-SWL-0002-0
DISPLAY
PCB ASS'Y
(LED FRONT)
6110-SWL-0002-0
(SW2 FRONT)
1

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8
6D10-SWL-0003-0
DISPLAY
PCB ASS'Y
(LED REAR)
6110-SWL-0003-0
(SW2 REAR)
1
9
6D55-SWL-0001-0
USB
PCB ASS'Y
6180-SWL-0000-0
(SW2,PR2)
1
10
7832W0003100
RS232 Cable
D9P*3P*310
(SW2,PR2,RS232)
1
11
7840W0032750
POWER Cable
3P*275
(SW2,PR2,POWER)
1
12
7840W0022710
Switch Cable
2P*370mm
(SW2,PR2,Battery)
1
13
7520P0070000
Pb Battery
102*46.3*46.3
4V/4A PB）
1

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CAS ELECTRICS CO.,LTD
14
7520P0001500
Mn Battery
R20-1.5V-D(TP,SW)
3
15
7562P0602CE0
SMPS
ADAPTOR
100-240V/6V0.5A
(CE.STRAIGHT)

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CAS ELECTRICS CO.,LTD
7.2. Mechanical Parts
7.2.1. BODY ASS'Y
No
Image
Part Code
Parts Name
DESCRIPTION
Unit
Q'ty
1
2000-A00-0451
BODY
EA
1
2
2000-A00-0452
BATTERY COVER
Mn
EA
1
3
2000-A00-0453
BATTERY COVER
PB
EA
1
4
2008-A00-0001
FOOT
EA
1
5
1020-A00-0019
BATTERY HOLDER
EA
6
2000-A00-0399
SEALING PLATE
EA
7
2000-A00-0453
LC PLATE
EA
3
8
2022A0000041
WATER LEVEL
GAGE
ø14.9*8(S-2000)상보
EA
1
9
BB01JP000130
SWITCH
EA
1

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CAS ELECTRICS CO.,LTD
10
7610SBT0303B
DC JACK
EA
1
11
2000-A00-0458
T SCREW PH
M4X10
EA
8
12
2000-A00-0452
T SCREW FH M3X8
EA
2
1590A0000240
BATTERY SPRING
D
1
1590A0000070
BATTERY SPRING
C
1
7840W000213C
BATTERY
WIRE(-)
2P*135m/m(SW-1)
1
7840W000216A
BATTERY
WIRE(+)
2P*165(SW-1)
1
7840W000323B
CONNECTOR
WIRE
3P*230mm-303(SW-
1S/C 전용)
1
1535-MSU-
0620
W BOLT WA 6X25
2
1535-MSU-
0625
W BOLT WA 6X20
2
1510A0003060
T SCREW PH M3X6
13
7.2.2. UPPER CASE ASS'Y
No
Image
Part Code
Parts Name
DESCRIPTION
Unit
Q'ty

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1
2000-A00-0455
UPPER CASE
EA
1
7.2.3. TRAY ASS'Y
No
Image
Part Code
Parts Name
DESCRIPTION
Unit
Q'ty
1
1005-A00-
0454
TRAY (SUS)
EA
1
2
2000-A00-
0454
TRAY (ABS)
EA
1
7.2.4. IMAGE ASS'Y
No
Image
Part Code
Parts Name
DESCRIPTION
Unit
Q'ty
1
SPEC PLATE
EA
1
2
2050-A00-0656
DP COVER (F)
SW-II TOOL
EA
1
3
2050-A00-0657
DP COVERV ®
SW-II TOOL
EA
1
4
CAPA STCKER
FRONT
EA
1
5
CAPA STCKER
REAR
7.2.5. PLATFORM ASS'Y
No
Image
Part Code
Parts Name
DESCRIPTION
Unit
Q'ty