Minebea CSD-903-EX User manual

DIGITAL INDICATOR
CSD-903-EX
Instruction Manual
EN294-1492-H

IV

I
FOREWORD
Thank you very much for your purchasing the digital Indicator CSD-903-EX.
This manual is provided to explain installation procedures and check points in operation. We
would like you to read through this instruction manual with much care for the best use of our
product to avoid malfunctions.
We also would like you to deliver the manual to end user surely to keep it at hand.
Marks and references described in this manual
The following marks are placed for the matters that indicate “Don’t do this”, “Caution”, and “For
reference”. Please be sure to read following descriptions with marks.
Warning
When you are operating the instrument, you have to pay cautions or restrictions related with this
description.
Be sure to read to prevent from malfunction.
Caution
Descriptions that may cause injury or physical damage to operators and such as occurrences of
physical damage.
When you are operating the instrument, you have to pay cautions or restrictions related with this
description.
Be sure to read to prevent from malfunction.

II
For safe operation
Be sure to read this manual before operation.
1. Location of installation
Caution
Use the Instrument under the following conditions.
●Environmental temperature : －10 ℃~ 50 ℃(Preservation : －20 ℃~ 60 ℃)
※The temperature span of JIS B 7611-2 conformity is －10 ℃~ 40 ℃.
●Environmental humidity : Less than 85 % R.H.（Non condensing）
Caution
Do not install the Instrument in following places. It may cause damage to the Instrument.
(1) Place to be avoided.
●Places exposed to direct sunlight and/or places in the high temperature.
●Places in a high humid area.
●Places where the instrument is directly affected by vibrations or mechanical shocks.
●Environments containing of corrosive gas or salt, etc.
●Environments with rapid change in temperature and/or humidity.
●Near the devices which generate magnetism or electromagnetic waves.
●Environments vulnerable to radioactivity or radioactivity rays.
●Environments where chemical reaction may take place such a laboratory.

III
(2) Installing the Instrument
Caution
Please secure and set up the spaces between CSD-903 and the devices.
Followings are the dimensions of the Instrument and for environmental spaces required:
Front Side
Rear dimension Panel cut
unit: mm
The side view when BCD connector is installed. (The I/O connector for external control attached is
the same dimension as a BCD connector.)
unit: mm
Control I/O Connector
BCD out connector (Option)

IV
(3) Applicable environment
Warning: The instrument may subject to use in a highly humid area or in full of powder dust.
In such a case, use the instrument by inserting the panel mount gasket attached between the control
panel (cabinet) and the main body.
By inserting the panel mount gasket, the front panel section becomes IP65 (International Protection
Code) or equivalent in dust-proof and water-proof construction.
* Care should be taken when handling the panel mount gasket.
2.
Screw (M3×10 bind)
Panel mounting metal
Panel mount gasket
(Dust proof・Water proof)
Control board (cabinet)

V
Power supply
Warning
Be sure to check that power supply is OFF when installing each cable. If an operator works with power
ON, he/she may have an electric shock or the instrument may be destroyed.
Warning
Before supplying power, check the indication of power voltage/specifications to be identical with
supplied power. If they are not identical, contact with us. Without checking the above, operation may
cause damage to the instrument or electric shock.
Caution
Be sure to ground a grounding wire. If a grounding wire is not grounded, it may cause malfunction of
the instrument or an electric shock to an operator.
3. Instructions for use
Caution
Before using a new instrument, or when exchanging a strain gage applied transducer for a new one, be
sure to make calibration. If neglected, it may cause incorrect results in measurement or malfunction in
the instrument and moreover may cause damage to peripheral equipments. When similar trouble
occurs after calibration, be sure to make calibration again, even if calibration has completed.
Caution
When using the instrument, check that wires are connected properly. If neglected, correct
measurement cannot be obtained and it may cause malfunction in the instrument or cause damage to
peripheral devices or a critical accident.
Caution
Improper change of setting during operation may cause incorrect measurement or malfunction, or
cause damage to peripheral equipments.
Caution
Do not give the instrument such a shock as throwing something at it.
It may cause damage or destroy electrical circuits and even have loose resistance to environment or
operability.
Caution
Do not remove the cover of the case of the instrument, nor peel off the panel sheet nor take the
instrument into pieces. If neglected, it may cause damage to the case and the panel sheet and even
have the possibility of damage to resist to environments or operational performances.
At the time of shipment from the factory, the instrument has been plated with a clear sheet on the panel
sheet for protective purpose. In case of application, use the instrument after removing the clear sheet
first.
Do not push the panel sheet on the instrument with the excessive strong force nor push it with sharp
edge object such as a driver. If neglected, it may cause damage to the panel switch and even have the
possibility of damage to resist to environments or operational performances.

VI
4. Conformity standard
This instrument has suited the following standard.
EN61326：2006
[Electrical equipment for measurement, control, and laboratory use －EMC requirements]
[Immunity test requirements for equipment intended for use in industrial locations]
EN61010-1：2001
[Safety requirements for electrical equipment for measurement, control and laboratory use
- Part 1：General requirement]
Annex C (Performance level H) of JIS B 7611-2：2009
[Non-automatic weighing instruments – Metrological and technical requirements and tests
- Part 2：Measuring instruments used in transaction or certification]
Caution
The instrument with the software ver.2.100 or later conforms to the JIS standard.
Caution
Please observe the following conditions strictly when this instrument suits the below if neglected, it
may not conform to the above standard.
(1) Shield processing
- Use the shielded cable other than the power cable.
- Refer to relative notes, for method of shielding process.
(2) Grounding
- The ground of this instrument shall apply the individual ground by using the protective ground
terminal.

VII
Caution
Please observe the following conditions strictly when this instrument suits the JIS standard.
If neglected, there is a possibility of not suiting the above-mentioned standard.
(3) Setting Functions
As for the details of the function of the value of C Function and Function,
please refer the paragraph 5-2 and 7-2.
CF-03 [Condition of over display] shall be applied the value of 2.
CF-08 [Net weight sign inversion] shall be applied the value of 0.
CF-11 [Effective range of zero set] shall be applied with less than the value of 02.
CF-13 [Data width of zero tracking] shall be applied with less than 4% of weighing capacity.
CF-20 [Set the stability detection in condition display while the set mode 2 or set of preset tare]
shall be applied the value of 0.
CF-21 [Set the unit display in sub-display section while the set mode 2 or set of preset tare] shall
be applied the value of 0.
F-01 [Setting of digital filter] shall be applied with more than the value of 016.
F-02 [Setting of analog filter] shall be applied with less than the set value of 01.
F-05 [Setting of stabilization filter] shall be applied with more than the value of 092.
F-06 [Data width of stabilization filter] shall be applied with less than the set value of 020.
F-07 [Time width of stabilization filter] shall be applied with more than the value of 05.
F-10 [Stability detection data width] shall be applied with the set value of more than 20.
F-11 [Stability detection time width] shall be applied with more than the value of 10.
F-15 [Operating condition of the preset tare weight cancellation] shall be applied the value of 0
or 1.
[OL] is appeared in the load date section at the over load. [-OL] is appeared in the load data section at
the condition of gross value is minus

VIII
Divisional history
Data Manual NO. Revision reason(content)
2010/10 DRW. NO. EN294-1492
First edition VER. 1. 000
2011/2 DRW. NO. EN294-1492A
Due to ECN No.FN10-02182A,FN11-02001
ROM Ver.2.100 or later
- Addition –
Preface 4.[JIS B 7611-2 : 2009] conformity standard.
4-3-1. addition of procedure
6-5. [System using the zener barrier] is added.
6-11. [Setting while set mode 2 or set of preset tare]
6-11-1.[Operation for stability detection]
6-11-2.[Operation for unit display in sub-display section]
Clause 6 and item number correction
12.[EzCTS mode] is added to [Check mode].
12-2.[EzCTS mode]
Clause 12 and item number correction
16-3-12.[Reading out ROM version] is added command.
25.[CF-20] or [CF-21] is added to [Setting table for
functions].
Additional correction of contents.
- Correction-
Preface 4.[EN61326:2009] →[EN61326:2006]
14-3-4.[Delay time of RS-485 return data]
16-3-10.[DE-9S-N(JAE)] →[DE-9S-NR by JAE or
equivalent.]
18-4.Power consumption [Approx. 8 VA] →[Approx 10
VA]
2011/10 DRW. NO. EN294-1492B
Due to ECN No.FN11-02123
ROM Ver.2.200 or later
- Correction-
Preface 1. Change picture of front view and panel
mounting view.
9. Correct the numbers of reference clause and
mistakes.
9-3-2. Correct the drawing of simple comparison
discharging mode.
16-1-5. Correct the graph for scaling of analog output.
- Addition-
1-1. Add the contents of the each function for condition
display section 2.
9-2-1. Add the contents of condition display section in the
measurement comparison value 1 setting mode.
- Deletion-
16-2-9. Delete the notes sentence・If set value of CF-03
is 2 and fross value is minus, BCD output shall be data
over condition.
2011/12 DRW. NO. EN294-1492C
Due to ECN No.FN11-02123
- Deletion-
6-9-1. Delete the notes sentence・The tare weight
cancellation is not accepted when gross value is below
the zero.
2012/12 DRW. NO. EN294-1492-D
Due to ECN No.FN12-02088
-Correction-
Change of Minebea’s Logo.
- Addition-
2-3. Add the applicable connector.
2-4. Add the applicable connector and note.
2-5. Add the applicable connector and note.

IX
Data Manual NO. Revision reason(content)
2012/12 DRW. NO. EN294-1492-D
Due to ECN No.FN12-02095
-Correction-
7-2., 8-5., 16-3-12.(12) change the explanation of key
lock.
7-2., 16-2-2., 16-3-12(12) change the explanation of
stream mode.
16-3-14. Correct the explanation of procedure for
communications.
-Addition-
4-3-8. Add the note.
16-3-14. Add the explanation for calibration procedure.
6-2., 7-1., 8-14., 9-2-1., 9-2-2., 9-8., 10-18., 11-3.,
16-2-13(9), (10), (12).
Add the note,and correction of error in writing.
Due to ECN NO.FN12-02097-A
-Correction-
1-1. Change the clause in the explanation of ZERO from
[Gross value or Net value] to [displayed].
4-3-6. Change the displayed number of dight for load cell
output voltage at zero calibration.
4-3-7. Change the displayed number of digit for load cell
output voltage at span calibration.
5-2. Change the number of digit for CF-93. and CF-94.
12-7. Change the number of digit for load cell output
voltage.
16-3-3. Change the explanation of when RS-422/485 is
used.
16-3-4. Change the explanation, title and note.
16-3-12. Command list for reading and writing the set
value.
16-3-13. (1)Change explanation title.
(2)Change explanation title.
-Addition-
7-2. Add F-18/48/49. Add the set value of F-19/47.
Add the contents of item of F-41.
8-9. Add the target of hold to holding explanation.
8-9-2. Add the detailed information of holding target.
8-10-1. Add the selection item of sub display.
14-3-1. Add the stream mode and note.
14-3-6. Add the explanation of output target in stream
mode.
16-3-12. Add F-17., F-18., F-48., F-49., to the command
list for reading and writing the set value.
Add the set value 9 ~ 15 of F-19 and 2 of F-47.
16-3-14. (7) 2) Add the registration command for zero of
the fifth decimal point digit.
(10) 2) Add the registration command for span
of the fifth decimal point digit.
25. Add the F-18.,F-48., and F-49 to the table of function
settting.
Add the setting of 9 ~ 15 to the setting table of sub
display (F-19).
Due to ECN No.FN12-02119
-Addition-
16-1-1. Add the resolution.
16-1-2. Add the resolution.
18-3. Add the resolution.
2013/05 DRW. NO. EN294-1492-E
Due to ECN No.FN13-02078
- Addition-
15. Add a sentence to the configuration table.

X
Data Manual NO. Revision reason(content)
2015/07 DRW. NO. EN294-1492-F
Due to ECN NO.FN15-02117
< Correction >
Cover : Change [MINEBEA] logo
Foreword, Ⅶ. Change the setting amount for operating
condition of Preset tare weight cancellation
7-2., 8-10., 16-3-12. Change the combination including
[Brand].
8-11. Change the display range of accumulating
operation.
8-11-2. Correct the note of accumulating operation.
25.Setting table for functions
<Additional>
Foreword, Ⅶ. Add the setting value of net weight sign
inversion.
3-1. Add the accumulation display mode.
5-2., 6-6.Add the net weight sign inversion and
explanation.
7-2. Add the preset tare weight cancellation operating
condition, comparator brand setting target, operating
mode of RS-232C interface, brand switch target, brand
number, and external control input.
8-7-3. Add the explanation of net weight offset operation.
8-11. Add the explanation of accumulation value clear
and accumulation time clear.
8-12. Add the explanation of brand switch target.
8-14. Add all brand accumulation clear, brand-1, brand-2,
and brand-4.
9-2. Add the explanation of brand number setting
method.
9-5., 9-6. Add the explanation of set value of 4-steps
comparator mode.
9-9. Add the batch/discharge brand setting and all brand
accumulation clear.
10-11. Add the explanation of batch/discharge brand
setting target.
14-3. Add the explanation of operating mode.
15. Add the explanation of command and calibration by
communication.
16-3-12. Add the accumulation amount (10 digits),
effective brand number, setting brand number,
comparator brand setting target, all brand accumulation
clear, RS-232C operating mode external control input.
2016/05 DRW. NO. EN294-1492-G
Due to ECN FN16-02057
- Deletion-
Delete ‘Minebea Co., LTD. Measuring Components
Business Unit’ from the front cover.
2017/08 DRW. NO. EN294-1492-H Due to ECN FN17-02017
・Delete the company name in the contents.

XI
Contents
FOREWORD ............................................................................................................................................................I
MARKS AND REFERENCES DESCRIBED IN THIS MANUAL.............................................................................I
FOR SAFE OPERATION ........................................................................................................................................II
1. LOCATION OF INSTALLATION......................................................................................................................II
2. POWER SUPPLY............................................................................................................................................ V
3. INSTRUCTIONS FOR USE ............................................................................................................................ V
4. CONFORMITY STANDARD .......................................................................................................................... VI
DIVISIONAL HISTORY ....................................................................................................................................... VIII
1. NAME AND FUNCTION OF EACH POINT.....................................................................................................1
1-1. FRONT PANEL ..............................................................................................................................................1
1-2. REAR PANEL................................................................................................................................................3
1-3. SIDE ...........................................................................................................................................................4
2. CONNECTING WIRES ....................................................................................................................................5
2-1. NOTES FOR CONCERNING CONNECTING WIRES..............................................................................................5
2-2. CONNECTION WITH STRAIN GAGE APPLIED TRANSDUCER................................................................................6
2-3. CONNECTION OF EXTERNAL CONTROL I/O ................................................................................................... 11
2-4. CONNECTION OF STANDARD RS-485 INTERFACE .........................................................................................12
2-5. CONNECTION WITH 2-WIRES SERIAL INTERFACE ..........................................................................................13
2-6. CONNECTION WITH POWER SUPPLY AND GROUND ........................................................................................14
3. OPERATION ..................................................................................................................................................15
3-1. CHANGEOVER OF MODE .............................................................................................................................15
4. CALIBRATION...............................................................................................................................................17
4-1. SET ITEMS REQUIRED IN THE CALIBRATION ..................................................................................................17
4-2. PROCEDURE SET IF NECESSARY AFTER CALIBRATION ...................................................................................17
4-3. CALIBRATION PROCEDURES .......................................................................................................................18
4-4. FINE ADJUSTMENT OF ZERO AND SPAN ........................................................................................................24
4-5. DIGITAL LINEARIZE. ....................................................................................................................................27
4-6. CALIBRATION ONLY OF ZERO POINT .............................................................................................................30
4-7. LOCK OF CALIBRATION..............................................................................................................................32
5. C FUNCTION MODE .....................................................................................................................................33
5-1. SETTING METHOD OF CFUNCTION DATA......................................................................................................33
5-2. FUNCTION OF CFUNCTION DATA.................................................................................................................34
6. VARIOUS FUNCTIONS BY C FUNCTION DATA .........................................................................................37
6-1. SETTING OF DECIMAL POINT DISPLAY POSITION............................................................................................37
6-2. A/D SAMPLING RATE ..................................................................................................................................37
6-3. CONDITION OF OVER DISPLAY (OR DISPLAY) ...............................................................................37
6-4. UNIT .........................................................................................................................................................37

XII
6-5. EXCITATION .............................................................................................................................................. 37
6-6. NET WEIGHT SIGN INVERSION .................................................................................................................... 38
6-7. ZERO SET................................................................................................................................................. 38
6-8. ZERO TRACKING ....................................................................................................................................... 39
6-9. POWER ON ZERO ...................................................................................................................................... 40
6-10. TARE WEIGHT CANCELLATION..................................................................................................................... 40
6-11. CLEAR AT POWER ON................................................................................................................................. 41
6-12. SETTING WHILE SET MODE 2OR SET OF PRESET TARE ................................................................................. 41
6-13. GRAVITY ACCELERATION COMPENSATION.................................................................................................... 41
6-14. AUTOMATIC RANGE SWITCH ....................................................................................................................... 43
6-15. SETTING OF THE STABILITY DETECTION TIME WIDTH IN CALIBRATION ............................................................. 44
6-16. DIGITAL LINEARIZE CLEAR .......................................................................................................................... 44
6-17. MEMORY CLEAR........................................................................................................................................ 45
7. FUNCTION MODE ........................................................................................................................................ 46
7-1. SETTING METHOD OF THE FUNCTION MODE................................................................................................. 46
7-2. FUNCTION OF THE FUNCTION DATA ............................................................................................................. 47
8. VARIOUS FUNCTIONS BY FUNCTION DATA ............................................................................................ 54
8-1. DIGITAL FILTER.......................................................................................................................................... 54
8-2. ANALOG FILTER......................................................................................................................................... 54
8-3. DISPLAY FREQUENCY ................................................................................................................................ 54
8-4. STABILIZATION FILTER................................................................................................................................ 54
8-5. KEY LOCK FUNCTION ................................................................................................................................. 56
8-6. STABILITY DETECTION ............................................................................................................................... 56
8-7. INPUT OF THE PRESET TARE WEIGHT CANCELLATION.................................................................................... 57
8-8. PRINT COMMAND ...................................................................................................................................... 58
8-9. HOLD ....................................................................................................................................................... 58
8-10. SUB DISPLAY SECTION ............................................................................................................................... 59
8-11. ACCUMULATION ........................................................................................................................................ 60
8-12. BRANDS ................................................................................................................................................... 61
8-13. SETTING OF FKEY .................................................................................................................................... 61
8-14. SETTING OF EXTERNAL CONTROL I/O ......................................................................................................... 62
8-15. MEMORY CLEAR........................................................................................................................................ 63
9. MEASUREMENT MODE............................................................................................................................... 64
9-1. SETTING METHOD OF THE MEASUREMENT MODE ......................................................................................... 66
9-2. MEASUREMENT COMPARISON VALUE SETTING MODE ................................................................................... 67
9-3. SIMPLE COMPARISON MODE....................................................................................................................... 72
9-4. SEQUENTIAL MODE ................................................................................................................................... 76
9-5. 4STEPS COMPARATOR MODE 1 .................................................................................................................. 83
9-6. 4STEPS COMPARATOR MODE 2 .................................................................................................................. 89
9-7. SQ FUNCTION MODE ................................................................................................................................. 92
9-8. SETTING METHOD OF THE SQ FUNCTION MODE........................................................................................... 92
9-9. FUNCTION OF SQ FUNCTION DATA.............................................................................................................. 93

XIII
10. VARIOUS FUNCTIONS BY SQ FUNCTION DATA...................................................................................95
10-1. WEIGHING MODE .......................................................................................................................................95
10-2. CONTROL MODE ........................................................................................................................................95
10-3. COMPARISON SIGNAL OPERATION ...............................................................................................................95
10-4. NEAR ZERO (ZERO BAND) COMPARISON OPERATION.................................................................................95
10-5. FULL COMPARATIVE OPERATION..................................................................................................................95
10-6. BATCH MONITORING TIMER ........................................................................................................................95
10-7. SETTING FOR OPERATION AT THE TIME BATCH START ....................................................................................96
10-8. F-FLOW COMPARE STOP TIMER ...................................................................................................................96
10-9. M-FLOW COMPARE STOP TIMER ..................................................................................................................96
10-10. D-FLOW COMPARE STOP TIMER...................................................................................................................96
10-11. FLOW/DISCHARGE BRAND SETTING TARGET ................................................................................................97
10-12. AUTOMATIC FREE FALL COMPENSATION .......................................................................................................97
10-13. JUDGE CONDITION .....................................................................................................................................97
10-14. WAITING TIME FOR JUDGE ..........................................................................................................................97
10-15. SETTING FOR THE OPERATION OF COMPENSATION FLOW ..............................................................................98
10-16. SETTING FOR THE OPERATION OF MEASURING FINISH OUTPUT ......................................................................98
10-17. SETTING FOR DISCHARGE OPERATION AFTER MEASURING FINISH ..................................................................99
10-18. ACCUMULATION CLEAR ............................................................................................................................100
10-19. SQ FUNCTION CLEAR...............................................................................................................................100
11. STORED PLACE OF SETTING DATA ....................................................................................................101
11-1. DATA RECORDED IN RAM.........................................................................................................................101
11-2. DATA RECORDED IN EEPROM .................................................................................................................101
11-3. DATA CAN BE CHANGED SAVING LOCATION .................................................................................................101
12. CHECK MODE.........................................................................................................................................102
12-1. SETTING METHOD OF CHECK MODE ..........................................................................................................103
12-2. EZCTS MODE .........................................................................................................................................104
12-3. CONFIRMATION OF ROM VERSION............................................................................................................104
12-4. CONFIRMATION OF OPTIONS .....................................................................................................................105
12-5. CONFIRMATION OF EXTERNAL CONTROL INPUT ..........................................................................................105
12-6. CONFIRMATION OF EXTERNAL CONTROL OUTPUT .......................................................................................106
12-7. CONFIRMATION OF LOAD CELL OUTPUT VOLTAGE .......................................................................................107
12-8. CONFIRMATION OF BCD OUTPUT (WHEN BCD OUTPUT IS APPLIED.) ..........................................................107
12-9. CONFIRMATION OF ANALOG OUTPUT (WHEN THE ANALOG OUTPUT IS APPLIED.) ...........................................108
13. 2 WIRE SERIAL INTERFACE(S-I/F) .......................................................................................................109
13-1. INTERFACE SPECIFICATION .......................................................................................................................109
13-2. DATA FORMAT ..........................................................................................................................................109
13-3. FORMAT DATA EXPLANATION ..................................................................................................................... 110
13-4. EXPLANATION OF OUTPUT TYPE ................................................................................................................ 110
14. STANDARD RS-485 COMMUNICATION ................................................................................................111
14-1. SPECIFICATIONS FOR STANDARD RS-485 COMMUNICATION........................................................................ 111

XIV
14-2. DATA FORMAT ..........................................................................................................................................111
14-3. ITEM OF STANDARD RS-485 COMMUNICATION SETTING ..............................................................................111
14-4. CONNECTING METHOD .............................................................................................................................113
15. MODBUS COMMUNICATION................................................................................................................. 115
15-1. CALIBRATION BY TRANSMISSION THROUGH MODBUS INTERFACE ................................................................ 123
16. OPTIONS................................................................................................................................................. 135
16-1. ANALOG OUTPUT .................................................................................................................................... 135
16-2. BCD OUTPUT ......................................................................................................................................... 140
16-3. RS-232C AND RS-422/485 INTERFACE ................................................................................................... 145
17. TROUBLE SHOOTING............................................................................................................................ 182
17-1. EXECUTE TROUBLE SHOOTING ................................................................................................................. 182
18. SPECIFICATIONS ................................................................................................................................... 196
18-1. ANALOG SPECIFICATIONS ........................................................................................................................ 196
18-2. SPECIFICATIONS FOR DIGITAL................................................................................................................... 196
18-3. INTERFACE ............................................................................................................................................. 197
18-4. GENERAL SPECIFICATIONS....................................................................................................................... 199
18-5. STANDARD SPECIFICATIONS AT THE TIME OF SHIPMENT.............................................................................. 199
18-6. ACCESSORIES ........................................................................................................................................ 199
19. ERROR DISPLAY.................................................................................................................................... 200
19-1. ERROR LOAD DISPLAY............................................................................................................................. 200
19-2. ERROR SUB DISPLAY ............................................................................................................................... 201
20. DISPLAY OF SEQUENCE ERROR......................................................................................................... 201
21. WARRANTY ............................................................................................................................................ 202
21-1. WARRANTY............................................................................................................................................. 202
21-2. REPAIR................................................................................................................................................... 202
22. LIFETIME OF USED PARTS................................................................................................................... 202
22-1. DISPLAY MODULE .................................................................................................................................... 202
22-2. EEPROM .............................................................................................................................................. 202
22-3. ELECTROLYTIC CAPACITOR ...................................................................................................................... 202
22-4. BATTERY ................................................................................................................................................ 202
23. EXCHANGE OF FUSES.......................................................................................................................... 203
23-1. EXCHANGE PROCEDURE OF FUSE ............................................................................................................ 203
24. DISPLAY CHARACTER PATTERN......................................................................................................... 204
25. SETTING TABLE FOR FUNCTIONS...................................................................................................... 205

1
1. Name and function of each point
1-1. Front panel
(1) Unit display section
The set measuring unit is displayed.
[○] lights at the unit display section at the stand-by condition (The load display has been turned off
while energized)
(2) Load display section
It displays [Gross/Net value], [Over] and [Error].
Also it displays the condition or the setting value in preceding the various setting.
(3) Condition display section 1
It displays the condition of CSD-903.
STABLE It lights when the measured data is steady.
PRESET TARE It blinks while setting a preset tare weight cancellation.
It lights when a preset tare weight cancellation is set.
TARE It lights when the tare weight cancellation is executed.
GROSS It lights when the load display is gross value.
NET It lights when the load display is net value.
ZERO It lights when the displayed load value is zero, and within ±1/4 of a scale interval.
HOLD It lights when HOLD function is active.
ERROR It lights when the output of ERROR signal outputs.
(1) Unit display section
(9) PRESET TARE ke
y
(8) ACCUM. ke
y
(7) SET ke
y
(6) ON/OFF ke
y
(2) Load display section
(3) Condition display section 1
(5) Sub display section
(4) Condition display section 2
(13) F key
(12) ZERO key
(11) NET/GROSS key
(10) TARE key

2
(4) Condition display section 2
Z-BAND It lights when a gross or net load value is under the value set as near zero.
It also blinks during setting and selecting the Z-BAND.
F.FLOW/S1 It lights when an output signal of full flow is ‘ON’ status in the sequential mode.
/PRELIM2 Also when an output signal S1 is ‘ON’ status in 1 or 2 of comparator mode.
It also blinks during setting and selecting the PRELIM2.
M.FLOW/S2 It lights when an output signal of medium flow is ‘ON’ status in sequential mode.
/PRELIM1 Also when an output signal S2 is ‘ON’ status in 1 or 2 of comparator mode.
It also blinks during setting and selecting the PRELIM1.
D.FLOW/S3 It lights when an output signal of dribble flow is ‘ON’ status in sequential mode.
/F.FALL Also when an output signal S3 is ‘ON’ status in 1 or 2 of comparator mode.
It also blinks during setting and selecting the F.FALL.
OVER/S4 It lights when the judgment condition becomes over in sequential mode.
Also when an output signal S4 is ‘ON’ status in 1 or 2 of comparator mode.
It also blinks during setting and selecting the OVER.
OK/S0 It lights when the judgment condition becomes ok in sequential mode.
/FINAL Also when an output signal S0 is ‘ON’ status in 1 or 2 of comparator mode.
It also blinks during setting and selecting the FINAL.
UNDER It lights when the judgment condition becomes under in sequential mode.
It also blinks during setting and selecting the UNDER.
FULL It lights when the judgment condition becomes full in sequential mode.
It also blinks during setting and selecting the FULL.
(5) Sub display
It displays a setting value of an accumulation value, an accumulation count and a sequence
operation. Please refer ‘8-10 Sub display section’ as for the details.
(6) key
This key turns the display on and off. When the display is turning off, the electric power is supplied to
the inside of the indicator and the measuring section. The display becomes the stand-by condition at
the time of turning off.
(7) key
Change to the function mode. Change each status to the former status set in advance.
(8) key
It is used for the load value to accumulate, and also it carries up the set digit when the value is set.
(9) key
It is used when the setting of the preset tare weight cancellation is executed.
And also it carries down the set digit when the value is set.
(10) key
The tare weight cancellation is executed.
And one value of the selected digit is raised when the value is set.
(11) key
It switches the gross value and net value of the displayed data.
And one value of the selected digit is lowered when the value is set.
(12) key
It memorizes a present load value as a zero point, and makes the display a zero.
(13) key
Execute function set in F key.
(Selectable from None, Print, Hold, Start of flow, Emergency stop, Zero clear, Tare weight bear,
Accumulation bear, Shift to the setting mode of weighing comparative mode or Forced batch finish)
Otherwise, decide the various data input and memorize the setting value in internal memory.

3
1-2. Rear panel
(1) Power supply terminals
It connects with power supply and ground.
(2) Load cell terminals
The signal line of the weighing part (load cell) is connected.
Up to 6 pieces of strain gage based transducer scan 350 Ωbe connected when the bridge power
supply is DC10 V.
(3) Optional parts mounting section
One point either of analog electric current output, analog voltage output, BCD output, CC-Link,
RS-232C or RS-422/485 is installed.
(4) Calibration LOCK switch section
Calibration LOCK switch can be operated by removing the cover.
(5) RS-485 and 2-wires method serial interface terminals
RS-485 interface terminals connect with a host computer, etc., and the 2 wires method serial
interface terminal connects with a printer, an external display unit, etc.
(6) External control I/O connector
It uses to connect with the external control unit.
Up to 9 input and up to 13 output in available to use.
(7) Protected earth terminals
Grounding wire should be connected to prevent the influence of noise such as static electricity.
Do not connect it other than the grounding.
F.G. of the power supply terminals is common internally.
(6) External control I/O
(7) Protected earth
terminals
(1) Power supply terminals (2) Load cell terminals
(3) Optional parts
mounting section
(4) Calibratin LOCK switch
(5) RS-485 and 2-wires method serial interface terminals

4
1-3. Side
(1) Model instructions seal
It shows a model number.
(2) Panel mounting metal
Use when CSD-903 is mounted to the control panel.
(2) Panel mounting metal
(1) Model instruction seal