MAINTENANCE MANUAL

MPF BENCH/FLOOR SCALE SERIES

MODELS: MPF-75 , MPF-150 , MPF-300

CONTENTS

1. INTRODUCTION

2. SPECIFICATIONS

2.1 SYSTEM BLOCK DIAGRAM

2.2 PHYSICAL LAYOUT OF ELECTRICAL CONNECTION

2.3 GENERAL SPECIFICATIONS

3. INITIAL SETUP

3.1 INTERNAL FUNCTIONS AND SETTING METHODS

3.2 AUTO AND DEALER CALIBRATION PROCEDURES

3.3 DISABLE CALIBRATION WITH DIP SW. (S1)

3.4 OFFSET AND SPAN VALUE DATA

3.5 FLOW CHART

4. TROUBLE SHOOTING

4.1 TROUBLE SHOOTING LOOP

4.2 PARTS AND COMPONENTS TROUBLE SHOOTING

5. ELECTRICAL CIRCUITRY

5.1 SCHEMATICS

5.2 PCB LAYOUT

6. BILL OF MATERIAL

7. APPENDIX

DEC 2001 REV 1

Specifications and Function Subject to Change without Notice

1

1. INTRODUCTION

This maintenance manual contains of certain information that may result in fraudulent use. Do not release any part of this manual to any end users or un-authorized persons.

The internal DIP S/W should be so set to prevent un-authorized settings or alternations.

Should a load cell has been replaced, make sure that the protection devices are properly set.

After servicing, it is necessary to go through all tests and procedures to ensure the scale meets all the meteorological and approval requirements.

Here are some features of the MPF series

1. Zero indicator

2. Tare indicator

3. Negative value indicator

4. Subtractive tare function

5. Power on zero function

6. Manual zero function

7. Auto Power Saving Function

8. Equipped with simple counting function

9. 5 1/2 x 25mm wide angle LCD digit s

10. Dual power: - By built-in rechargeable battery and external AC/DC power adaptor

11. Low battery warning signal

12. Dual color charge status indicator

13. 2 Types of Calibration

14. Overload protection devices against excessive load or shock applied

15. AC/DC power adaptor, adjustable feet and dust cover included

16. Dip Switch to prevent end-user calibration

17. Optional EL backlight and bubble level

18. Optional RS232 interface

2

2. SPECIFICATION

2.1 SYSTEM BLOCK DIAGRAM

LCD

LCD DRIVER

E+

LOAD E-

CELL S+

S-

A/D UNIT

CPU with ROM

POWER SUPPLY:

1.

AC ADAPTOR

(9V/500mA)

2.

RECHARGEABLE

BATTERY (6V 4Ah)

KEYBOARD

(4 KEYS)

Description:

When an article is placed on the platter, the load of the article is applied to the load cell inside the scale.

The resistance to the excitation current in the strain gauge will then changed and the analog output signal varies.

It is amplified and digitized continuously by the A/D converter into a digital signal. Subsequently, the resulting count is processed and managed by the CPU.

The CPU refers to the instructions from the keyboard, and then conveys the output data to LCD driver, which formats the data into readout on the display panels.

3

2.2 PHYSICAL LAYOUT OF ELECTRICAL CONNECTION

DC JACK

LOAD CELL

RECHARGEABLE

BATTERY

6V 4Ah

4 PIN

CONNECOTR

MAIN BOARD

HBW-12-X

LCD

J2

DC IN

MODE

OFF

J3

BAT

-

+

SAMPLE ON/ZERO

S- S+ E- E+

4

2.3 GENERAL SPECIFICATIONS

Overall View

5

2.3.2 Overall Dimension:

420(W) X 600(L) X 800(H) mm

2.3.3 Platter Size:

420(W) X 520(L) mm

2.3.4 Model Specifications

Model Number

Capacity

External Resolution

Tare Range

Power on Zero Range

Manual Zero Range

Operation

Environment

MPF -75

75kg

0.01kg

MPF-150

150kg

0.02kg

Full Tare

±10%F.S.

±2%F.S.

0 o

~40 o

C (32 o

~104 o

F),

Non-condensed. R.H.

≦85%

Power Consumption Normal = 0.1W

Charging = 5W

MPF-300

300kg

0.05kg

2.3.5 Main Components Used

Microprocessors: 89C51

Crystal Oscillator: 6MHz

Display Device: WTN Liquid Crystal Display

Load Cell Used: 350

Ω load cell

Load Cell Capacity: MPF-75

MPF-150

MPF-300

2.3.6 Analog Specification

Input sensitivity: 2mV/V

Zero Range Adjustment:

± 2% of rated capacity

Zero Balance Range:

±10% of rate capacity

Load Cell Excitation Voltage: DV5V

A/D Conversion Speed: 10 times/second

Internal Resolution: 30000

= 100kg

= 150kg

= 300kg

6

3. INITIAL SETUP

3.1 INTERNAL FUNCTIONS AND SETTING METHODS

INTERNAL FUNCTION TABLE

Function Symbol

1

2

F.1

F.2

3

4

F.3

F.4

Description

Span value reading and dealer calibration

Full display segment and max. capacity check

Check offset value and scale configuration

Auto power off setting

HOW TO ENTER THE REQUIRED FUNCTION MODE

a. Turn scale off.

b. Press and hold SAMPLE, then turn scale on. Scale displays F.1

c. Press SAMPLE until the required function number appears.

d. Press F e. Press F until the required setting appears.

f. Press SAMPLE to confirm.

g. Repeat step c to f for other function setting, or h. Press ON/RE-ZERO to save settings and return to normal operation.

F.1 Span Value Reading and Dealer Calibration

a. Simply enter F.1 to read the A/D counts.

b. Press ON/RE-ZERO to clear the A/D counts, apply test mass onto platter, the span value of test mass will be displayed.

c. Refer to Dealer Calibration procedures for dealer calibration.

F.2 Display Segment and Rated Capacity & Division Check

When function is entered, all segments will be displayed.

Check and make sure that no segments are missed.

F.3 Check Offset Value and Scale Configuration

a. Enter F.3, scale displays the Offset value when unloaded.

b. Apply extra load onto platter, the total internal count value will be displayed.

SELECT WEIGHT UNITS

a. Press and hold F until the weight unit appears.

b. To employ all (metric and pound) weight units, press F until lb appears. To disable pound weight unit, press F until kg appears.

c. Press ON/RE-ZERO to save setting and back to normal operation status.

7

EMPLOY SIMPLE COUNTING FUNCTION

a. Press and hold F until the weight unit appears.

b. To employ simple counting function, press F until PCS appears.

To disable simple counting function, press F until PCS disappears.

c. Press ON/RE-ZERO to save setting and back to normal operation status.

F.4 Auto Power Off Setting

Two modes are available: (Default=4_OFF)

0._OFF = Auto Power Off function is disabled.

4._OFF = Scale will automatically be turned off after 4 minutes unused.

3.2 AUTO AND DEALER CALIBRATION PROCEDURES

ACCEPTABLE LOAD FOR AUTO AND DEALER CALIBRATION

Model Number External

Division

Acceptable Auto and Dealer

Calibration Load

MPF-75

MPF-150

MPF-300

1/7500

1/7500

1/6000

* Recommended calibration load

*20kg

*50kg

*100kg

40kg

100kg

200kg

Dealer Calibration Procedures:

1. Turn scale off.

2. Press and hold SAMPLE, then turn scale on.

3. Scale displays F.1

4. Press F

5. Scale displays offset value

6. Press ON/RE-ZERO

7. Press SAMPLE

8. Press ON/RE-ZERO

9. Press SAMPLE

10.Press ON/RE-ZERO, scale displays a circle at the right hand of the display. It means the scale is ready for dealer calibration. Make sure that the figure being displayed is =0 or 1, If not, press

ON/RE-ZERO again.

11.Load calibration either load as listed on above table.

12.When value displayed is stable, press F.

13.Wait until the scale starts countdown.

14.Calibration completed and scale is ready for operation.

8

Auto Calibration Procedures:

1. Turn scale off

2. Press and hold F, then turn scale on.

3. Scale displays CAL?

4. Press F

5. Scale displays LOAD XXXX or XXXX

6. Load calibration load according to above table.

7. Wait until the scale display DONE and starts countdown.

8. Calibration completed and scale is ready for operation.

3.3 DISABLE CALIBRATION AND AVOIRDUPOIS WEIGHT UNITS WITH DIP SW. (S1)

The DIP SW.#1 is used to control calibration and avoirdupois weight units. Push this switch to ON position to disable calibration.

3.4 OFFSET AND SPAN VALUE DATA

OFFSET AND SPAN VALUE DATA TABLE

Model

Number

Offset

Value

(Thousand)

MPF-75 10~14

MPF-150 10~14

MPF-300 10-14

Span Value(Thousand) at

Various Load Applied

Offset

Control

Span

Control(Ohm)

R1A

10~15 at 20kg 20~30 at 40kg VR1 Trimmer 68K

10-15 at 50kg 20-30 at 100kg VR1 Trimmer 68K

10~15 at 100kg 20~30 at 200kg VR1 Trimmer 82K

READING OFFSET VALUE

1

2

Turn scale off

Remove all load from platter

3 Enter F.3 and read the offset value

READING SPAN VALUE

1 Turn scale off

2

3

4

5

Remove all load from platter

Enter F.1

Press ON/RE-ZERO

Apply load to platter. Span value according to load applied will be displayed.

HOW TO ADJUST OFFSET VALUE

In case the offset value is out of range, adjust the trimmer located at VR1 on the main board to obtain correct offset value.

HOW TO ADJUST SPAN VALUE

The span value is controlled by resistor located on R1A, standard resistor value of R1A is listed on the above table. If the required

9

span value is not attained, then change R1A resistor according to either case below:

Span value too low: Increase the resistance of R1A.

Span value too high: Decrease the resistance of R1A.

10

3.5 FLOW CHART

3.5.1 Auto Calibration (for end-user)

11

LCD

PANORAMA

START

PRESS "F"

& "ON/RE-ZERO"

DISPLAY

FULL SCENE

RELEASE

"ON/RE-ZERO" KEY

DISPLAY

"YES"

DISPLAY

"LOAD"

DISPLAY

"XXXX"

DISPLAY

"or"

DISPLAY

"XXXX"

CALIBRATE?

DISPLAY

"CAL.?"

RELEASE

"F" KEY

PUT A ASSIGNED

WEGHT ON PLATTER

"F"=YES

"ON/RE-ZERO"

=NO

PRESS "F" OR

"ON/RE-ZERO" KEY

CALIBRA-

TE?

YES

NO

DISPLAY

"no"

DISPLAY

"99999"

COUNT DOWN

DISPLAY

"00000"

DISPLAY

" 0 kg"

NO

NO

CORRECT WEIGHT

ASSIGNED?

YES

DISPLAY

"DONE"

DISPLAY

"99999"

COUNT DOWN

DISPLAY

"00000"

STANDBY FOR

OPERATION

WEIGHT IS STILL

ON THE PLATTER?

YES

DISPLAY

"XXXX"

"XXXX"=ASSIG-

NED WEIGHT

3.5.2 Function Test (for technicians only)

12

" F " l

START

PRESS "SAMPLE"

& "ON/RE-ZERO"

LCD PANOR-

AMIC VIEW

RELEASE

"ON/RE-ZERO" KEY

RELEASE

"SAMPLE" KEY

F1

F1

PRESS KEY?

"SAMPLE"

Other

S

F2

F2

S

99999

11111

COUNT DOWN

00000

<-

0.00 kg

STANDBY FOR

OPERATION

13

xxxx:Show offset l

DISPLAY

"XXXX".

PRESS "RE-ZERO " ?

NO k

A/D

_ counts

> 0 + / - 3

CAL.

LOOP

YES

TEST

KEYBOARD k

0

Key in

Private Code

NOTE :

1:

SAMPLE key

2: RE-ZERO key

C

PRESS KEY CODE :

1 , 2 , 1 , 2

NO

SWITCH OFF ?

LEGITIMATE

PROCEDURE

YES

0

0

NO

"

0

" Accept

Private

Code

PUT ON THE

ASSIGNED

WEIGHT

END

YES j

DISPLAY

SPAN VALUE k

: key code

DIP SW. #1

> ON?

j

NO

YES k

NO

PRESS "F" ?

YES

WEIGHT

ASSIGNED

YES

NO

C

DONE

S

14

F2

F2 s

Other

"F"

PRESS KEY?

"F"

"SAMPLE"

AXX.XX

XX.XX:Capacity

L.C.D

PANORAMIC

VIEW

PRESS KEY?

"SAMPLE" other

S

F1

F3

F3

S other

PRESS KEY?

"SAMPLE"

F4

"F"

XXXXX:

OFFSET VALUE

S

Other

PRESS KEY?

"SAMPLE"

F1

Press "F" for lasting 2 sec.

WEIGHT UNIT CHANGED: kg<--->kg/lb<--->kg/lb/pcs

15

F4

F4 other

PRESSKEY?

"SAMPLE

F1

4_oFF

" F "

Auto shut-off when not in use for 4 min.

S other

PRESSKEY?

" F "

0_oFF

"SAMPLE

"

F1

No

Auto shut-off

16

4. TROUBLE SHOOTING

4.1 TROUBLE SHOOTING LOOP

POWER ON

NO DISPLAY

COUNT DOWN?

CHECK POWER SUPPLY,

CPU,LCD,KEYBOARD

OK

COUNTS AND

THEN ZERO?

GHOST

CHECK POWER

SUPPLY,LCD,LCD

DRIVER

IC,R26~29

INCORRECT

RE-CALIBRATE

THE SCALE

DISPLAY RANDOM

FIGURE

CHECK CPU,LCD,

LCD DRIVER IC

SHOW “00000”

OK

PROPER READOUT?

OK

CORRECT READOUT?

OK

CHECK LOAD CELL,

A/D UNIT,OFFSET

VALUE

UNSTABLE

CHECK PLATTER

STOPPER,LOAD

CELL,A/D UNIT,

BAD SOLDERING

CAN’T REACH THE

FULL CAPACITY

CHECK PLATTER

STOPPER,LOAD

CELL,OFFSET

VALUE

NORMAL OPERATION

17

4.2 PARTS AND COMPONENTS TROUBLE SHOOTING

4.2.1 Power Supply Checking

4.2.1.1 Relevant parts:

Main Board (HBW-12-X)

Q3 (C1061)

ZD1 (8.2V)

BR1 (W04/1A)

Q4 (A1515)

Q1 (C945)

Q5 (C945)

R14 (1.2 ohm, 1/2W)

U6 (HT-7039)

U4(AIC 1722-50)

U5(AIC 1722-3.3)

DC JACK(SCD-021)

Description:

1) AC Adaptor: This AC Adaptor provides power for DC9~12V,500mA

2) Battery: Built-in Rechargeable Battery 6V/4Ah

18

3) How Battery is charged completely?

The charging voltage is regulated by Q3 (C1061) and ZD1 (8.2V) for about 7 volts.

The charging current will go down automatically when voltage reached.

Q1 (C945) and R14 (1.2R, 1/2W) provide Over-Current protection.

4) +3.3V power drives A/D converter device(IC 7715).

U5 (AIC 1722-3.3) is a 3.3volts Voltage Regulator.

5) +5V power drives analog and digital circuit systems.

U4 (AIC 1722-50) is a 5volts Voltage Regulator.

6) Auto-off:

If the scale is set on 4_oFF or even under LO-BAT situation, after some minutes the CPU will release a low potential signal to draw down Q2, then Q1 cuts off, the scale will be shut down immediately.

7) Low Power Detection:

The U6 (HT-7039) is designed to detect the power level. When battery voltage is less than 5.5V, it will release a low potential signal to CPU, and then CPU will instruct LCD display to show LO-BAT symbol.

4.2.1.2 Input voltage: 5.5V or higher

Check and recharge battery if voltage less than 5.5V.

Check DC-JACK or AC Adaptor if been defective.

4.2.1.3 System voltage (Vcc): 5V +/- 10%

Check that the system voltage is within 5V +/- 10% a) less than 4.5V, the CPU may not work properly.

b) more than 6V, ghost will appear on LCD.

4.2.2 Platter Stopper Checking

The platter device shall not touch anything around itself during operation. Check that the platter is not contacted with the upper

(no load) and/or lower (with load) stopper.

4.2.3 LCD Display Checking

4.2.3.1 Check that it is soldered and connected properly between LCD and driver IC (uPD7225), driver IC (uPD7225) and CPU.

4.2.3.2 Check whether LCD is broken.

4.2.4 CPU Checking

4.2.4.1 Check that all pins are seated properly into the socket.

19

4.2.4.2 Check that the Crystal Oscillator works.

4.2.4.3 Check the RESET is normally low.

4.2.5 A/D Unit Checking

4.2.5.1 Check that the +3.3V & +5V powers are correctly fed to the

A/D unit.

4.2.5.2 Check that the signal output of loadcell is adequate.

4.2.5.3 Check OP. amplifiers & A/D converter (AD7715).

When no error is found with the above checking procedures, the trouble can be caused by the load cell or the PCB itself. Replace a new one could be better to identify the defectiveness.

In this way, the readout of weight would be varied because of the output voltage of loadcell and different span value, so re-calibration is necessary after this replacement.

20

5. ELECTRICAL CIRCUITRY

5.1 SCHEMATICS

21

22

23

5.2 PCB LAYOUT

HBW-12-2 TOP LAYER

HBW-12-2 BOTTOM LAYER

24

HBW-12-2 TOP OVERLAY

HBW-12-2 BOTTOM OVERLAY

25

F0100MPF000

F0100MPF001

G0001FM0200

G0001706000

F0003MPF000

F0002MPF000

F0004MPF000

F0007MPF000

G0004FW0000

G0009706000

A1600060400

A1208020351

C1OFW000000

C1MPF010000

Z7MFW000000

A0906000210

A60********

A0905600401

A0905600400

A1204040250

G0005NBS101

6. BILL OF MATERIAL

STRUCTURE

Parts No.

E1HBW000016

A0004******

Description Specification Qty Remark

P.C.B. KIT

LOAD CELL

HBW-12-X MAINBOARD

CAPACITY = 100KG

CAPACITY = 150KG

CAPACITY = 300KG

ALUMINUM HOUSING(UPPER) MPF SERIES, 430x530mm 1

ALUMINUM HOUSING(UNDER) MPF SERIES, 430x530mm 1

INDICATOR HOUSING(UPPER) FM SERIES

INDICATOR HOUSING(UNDER) 1708S SERIES

1

1

1

1 MPF-75

1 MPF-150

1 MPF-300

S/S INDICATOR FIX PLATE MPF SERIES, T SHAPE

S/S HOUSING COVER

S/S PILLAR

PILLAR SUPPORT

ADJUSTABLE FEET

BATTERY CAP

1

MPF SERIES 430*530*1.5t 1

MPF SERIES,38

φ*65cm

MPF SERIES

FW SERIES,

φ72x50

1708S SERIES

1

1

4

1

RECHARGEABLE BATTERY

BATTERY WIRE ARRAY

GP4-6/6V 4Ah

2 PIN 35cm(SINGLE HOUSING)

1

1

PANEL PC

OVERLAY

OFW SERIES, 200*78*2t 1

MPF SERIES 1

DUST COVER

D.C. JACK

ADAPTOR

CONNECTOR

CONNECTOR

WIRE ARRAY

PLASTIC BLOCK

MFW SERIES

SCD-021

***V/9V 500mA

PLT-164-P

PLT-164-R

4 PIN 25cm

M16

1

1

1

1

1

1

1

HBW-12-X MAINBOARD

E0HBW000016

A0208072250

A0202093461

A0207017223

A0207017220

A0250070390

A0203077150

A0206000172

A0206000074

A0203076600

A0201089511

A0102000289

A0300000040

A0401007330

A0401009450

A0401015150

A0401010610

P.C.B.

I.C.

I.C.

VOLTAGE REGULATOR I.C.

VOLTAGE REGULATOR I.C.

I.C.

I.C.

I.C.

I.C.

I.C.

I.C.

L.C.D.

I.C. SOCKET

TRANSISTOR

TRANSISTOR

TRANSISTOR

TRANSISTOR

A0501004148

A0501004002

A0502000001

A0503020082

A0625050000

DIODE

DIODE

BRIDGE RECTIFIER

ZENER DIODE

L.E.D.

HBW-12-X

UPD7225G

93C46

AIC-1722-33CZT

AIC-1722-50CZL

HT7039A

AD7715-3

OP-177GS

OP07CP(AD)

7660

89C51

G289

40 PIN

A733

2SC945

A1515

C1061C OR D880

1

1 U7

1 U10

1 U5

2 U4,13

1 U6

1 U3

1 U1

1 U2

1 U12

1 U9

1 LCD1

1 U9

1 Q2

2 Q1,5

1 Q4

1 Q3

1N4148

1N4002

2 D1,3

1 D4

W04(1A) 1 BR1

1/2W 8V2(9A3) 1 ZD1

ROUND,5mm,(RED,GREEN) 1 LED1

26

A0740020050

A0801001203

A0802047309

A0803041002

A0803043002

A0803044002

A0804041003

A0804042002

A0804042322

A0805020120

A0805021101

A0805041102

A0805041103

A0805041104

A0805041153

A0805041221

A0805041334

A0805041471

A0805041472

A0805041223

A0902010020

A1005030512

A1100260000

A1301000002

A1306000003

A1500000004

A5004000003

A0701106017

A0701108016

A0701477016

A0713474063

A0720103101

A0730104050

CAPACITOR (EC) 10uF/16V (SS TYPE) 15 C12,17,19,

21,23~25,27

,31,35,38,

40~42,46

CAPACITOR (EC)

CAPACITOR (EC)

CAPACITOR (MLC)

1000uF/16V

470uF/16V

1 C14

1 C16

POLYESTER FILM CAPACITOR(MEF) 0.47uF(474) 3 C6,7,9

POLYESTER FILM CAPACITOR(PET) 0.01uF/100V(103J) 1 C1

104Z 21 C2~5,8,10,

11,13,15,

CERAMIC CAPACITOR (CC)

TRIMMER

RESISTOR NETWORK

20pF

3006P-001-203(20K)

47K OHM 9 PIN

METAL FILM RESISTOR(10PPM) 10K OHM 1/4W

18,20,22,26

,34,36,37,

39,43~45,47

2 C32,33

1 VR1

1 NR1

2 R8,10

METAL FILM RESISTOR(10PPM) 30K OHM 1/4W

METAL FILM RESISTOR(10PPM) 40K OHM 1/4W

METAL FILM RESISTOR

METAL FILM RESISTOR

METAL FILM RESISTOR

CARBON FILE RESISTOR

CARBON FILE RESISTOR

CARBON FILM RESISTOR

CARBON FILM RESISTOR

CARBON FILM RESISTOR

CARBON FILE RESISTOR

CARBON FILE RESISTOR

CARBON FILM RESISTOR

CARBON FILE RESISTOR

CARBON FILE RESISTOR

CARBON FILE RESISTOR

CONNECTOR

FERRITE BEAD

CRYSTAL

DIP S/W

TACT SW

BUZZER

HEAT SINK

100K OHM 1/4W

20K OHM 1/4W

23.2K OHM 1/4W

1.2 OHM 1/2W

100 OHM 1/2W

1K OHM 1/4W

10K OHM 1/4W

1 R7

1 R9

5 R2~6

1 R41

1 R24

1 R14

1 R11

1 R37

8 R16~18,23,

26~28,36

1 R19

2 R15,29

1 R12

100K OHM 1/4W

15K OHM 1/4W

220 OHM 1/4W

330K OHM 1/4W

470 OHM 1/4W

4.7K OHM 1/4W

22K OHM 1/4W

1 R25

1 R13

1 R30

2 R20,21

2 PIN WAFER,PITCH=3.9mm

2 J2,3

3.5 x 6 x 0.8 mm 2 L1,2

6.0 MHz

DS-02 (4 PIN)

1

1

X1

S1

KPT-1104B

OBO-15210

MB-207-20

4 SW1~4

1 BZ1

1 Q3

HBW-12-X MAINBOARD (EL OPTION)

A1400000006

A0250008030

A0501004148

A0701106017

A0730104050

A0740104100

A0805041102

A0805041105

A0805041565

A1002108000

BACK LIGHT

I.C.

DIODE

CAPACITOR (EC)

CAPACITOR (MLC)

CERAMIC CAPACITOR (CC)

CARBON FILM RESISTOR

CARBON FILM RESISTOR

CARBON FILM RESISTOR

INDUCTOR

EL-13044 (130 X 44 mm) 1 EL1

HV803

1N4148

1

1

U8

D2

10uF/16V (SS TYPE)

104Z

104Z/100V

1K OHM 1/4W

1

1

1

1

C28

C29

C30

R35

1M OHM 1/4W

5.6M OHM 1/4W

1mH

1 R33

1 R33

1 L3

27

HBW-12-X MAINBOARD (RS-232 OPTION)

A0901010040

E1EEC200000

CONNECTOR

P.C.B. KIT

4 PIN WAFER

EEC RS232 BOARD

1 CN2

1

=================================================================

28

7. APPENDIX

PARTS EXPLOSION:

29

ITEM PART NO.

PART NAME SPECIFICATION

1

F0100MPF001 ALUMINUM HOUSING(UNDER) MPF SERIES, 430x530mm

2

G0004FW0000 ADJUSTABLE FEET

FW SERIES,

φ72x50

4

A0004****** LOAD CELL NDA TYPE

QTY

1

4

1

9

F0100MPF000 ALUMINUM HOUSING(UPPER) MPF SERIES, 430x530mm

12

F0002MPF000 S/S HOUSING COVER MPF SERIES 430*530*1.5t

13

F0007MPF000 PILLAR SUPPORT

17

G0005NBS101 PLASTIC BLOCK

MPF SERIES

19

F0004MPF000 S/S PILLAR

M16

MPF SERIES,38

φ*65cm

21

A0905600401 CONNECTOR PLT-164-P

22

F0003MPF000 S/S INDICATOR FIX PLATE MPF SERIES, T SHAPE

23

G0001706000 INDICATOR HOUSING(UNDER) 1708S SERIES

24

A0906000210 D.C. JACK SCD-021

1

1

1

1

1

1

1

1

1

25

A0905600400 CONNECTOR

26

A1600060400 RECHARGEABLE BATTERY

27

A1208020351 BATTERY WIRE ARRAY

28

G0009706000 BATTERY CAP

PLT-164-R

GP4-6/6V 4Ah

2 PIN 35cm(SINGLE HOUSING) 1

31

G0001FM0200 INDICATOR HOUSING(UPPER) FM SERIES

32

E1HBW000016 P.C.B. KIT HBW-12-X MAINBOARD

34

C1OFW000000 PANEL PC

35

C1MPF010000 OVERLAY

1708S SERIES

OFW SERIES, 200*78*2t

MPF SERIES

1

1

1

1

1

1

1

30

31

32

33

34

35

36

37

38

NDA LOAD CELL SPECIFICATION SHEET

RATED CAPACITY

SAFE OVERLOAD

ULTIMATE OVERLOAD

RATED OUTPUT

5 kg f - 10 00 kgf

150%R.C.

200%R.C.

2.0mV/V

± 1%

COMBINED ERROR

ZERO RETURN(20 MIN.)

REPEATABILITY

CREEP(20 MIN.)

0.02 5%R.O.

0.02%R.O.

0.02%R.O.

0.02%R.O.

EXCITATION, RECOMMENDED

EXCITATION, MAXIMUM

10V or less

15V

ZERO BALANCE

± 1%

TERMINAL RESISTANCE, INPUT

405

Ω±3Ω

TERMINAL RESISTANCE, OUTPUT

350

±3Ω

INSULATION RESISTANCE

5000M

Ω or more (DC 50V)

TEMP. RANGE COMPENSATED

TEMP. RANGE SAFE

-10

℃~40℃

-20

℃~60℃

TEMP EFFECT ON ZERO BALANCE

0.026%R.O./10

℃

TEMP. EFFECT ON OUTPUT

0.01 5%LOAD/10

℃

39