CAS SW-2 User manual

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CAS ELECTRICS CO.
,
LTD
SW-II Series
Service Manual
(English)
2016. 06. 27

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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................................................................................................................ 15
7. Parts List ........................................................................................................................ 16
7.1. Electronic Parts........................................................................................................ 16
7.2. Mechanical Parts...................................................................................................... 17
7.2.1. BODY ASS'Y ......................................................................................................... 17
7.2.2. UPPER CASE ASS'Y................................................................................................ 19
7.2.3. TRAY ASS'Y.......................................................................................................... 19
7.2.4. IMAGE ASS'Y........................................................................................................ 20
7.2.5. PLATFORM ASS'Y................................................................................................... 20
7.2.6. C/T ASS'Y ............................................................................................................ 20
7.2.7. Loadcell Parts....................................................................................................... 21
Revision ............................................................................................................................. 22

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CAS ELECTRICS CO.
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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 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.
 Donotsubjectthe plattertosuddenshocks.
 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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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=0.5g
e=0.2g
e=0.1g
e=1/2g
e=2g
e=1g
e=0.5g
e=0.2g
e=2/5g
e=5g
e=2g
e=1g
e=0.5g
e=0.5/1g
e=10g
e=5g
e=2g
e=1g
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 - MAX
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

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Option 6 V Adapter 500 mA, Pb 4 V4 A,
Rear Display, RS232, USB, SUS TRAY
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 (Initialization and 3 point calibration)
Cal mode 2: Calibration should only proceed again (3 Point calibration)
Cal mode 3: One Point Calibration Mode
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.
After pressing the [ZERO] key and [TARE] key Power ON the display is as follows. Press [MODE] key One Point
Cal mode 3.
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

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15002 single 2 1/7500
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 and [TARE] key Power ON the display is as follows. Press [ZERO] key
Parameter Setting Mode. 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 (Non OIML)
1 ±10% (OIML)
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:

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(1) Change your settings
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 - 0
1
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”.

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(3) Press [ZERO] key and then it displays “zero” message.
(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 [ZERO] 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)
ZERO + POWER ON
USER SET MODE
Rs-st : Stable mode
Rs –Co : Continuous mode
Rs –oc : Command mode

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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.

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CAS ELECTRICS CO.
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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 1
2 6D10-SWL-0000-0
DISPLAY
PCB ASS'Y
(LCD FRONT)
1
3 6D10-SWL-0001-0
DISPLAY
PCB ASS'Y
(LCD REAR)
1
4 6D10-SWL-0002-0
DISPLAY
PCB ASS'Y
(LED FRONT)
1
5 6D10-SWL-0003-0
DISPLAY
PCB ASS'Y
(LED REAR)
1
6 USB
PCB ASS'Y 1
7 7832W0003100 RS232 Cable 1

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8 1
9 Switch Cable 1
10 Pb Battery 1
11 Mn Battery 3
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

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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
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

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CAS ELECTRICS CO.
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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
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

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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
1 1020-A00-
0021 UPPER PLATFORM EA 1
3 2600-A00-
0169
PLATFORM
RUBBER EA 4
7.2.6. C/T ASS'Y
No Image Part Code Parts Name DESCRIPTION Unit Q'ty