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.
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.
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.
Warning
Caution
I
For safe operation
Be sure to read this manual before operation.
1. Location of installation
Use the Instrument under the following conditions.
Caution
● 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)
Do not install the Instrument in following places. It may cause damage to the Instrument.
Caution
(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.
II
(2) Installing the Instrument
Please secure and set up the spaces between CSD-903 and the dev i ces.
Caution
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)
III
(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)
IV
Power supply
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.
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.
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.
Warning
Warning
Caution
3. Instructions for use
Before using a new instrument, or when exchanging a strain gage applied transducer fo r 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.
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 dama ge to
peripheral devices or a critical accident.
Caution
Caution
Improper change of setting during operation may cause incorrect measurement or malfunction, or
cause damage to peripheral equipments.
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.
Do not remove the cover of the case of the instrument, nor peel off the panel sheet nor take th e
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.
Caution
Caution
Caution
V
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]
The instrument with the software ver.2.100 or later conforms to the JIS standard.
Please observe the following conditions strictly when this instrument suits the below if neglected, it
may not conform to the above standard.
Caution
Caution
(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.
VI
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.
Caution
(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
VII
Divisional history
Data Manual NO. Revision reason(content)
2010/10 DRW. NO. EN294-1492
2011/2 DRW. NO. EN294-1492A
2011/10 DRW. NO. EN294-1492B
2011/12 DRW. NO. EN294-1492C
2012/12 DRW. NO. EN294-1492-D
VIII
First edition VER. 1. 000
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.
- CorrectionPreface 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]
Due to ECN No.FN11-02123
ROM Ver.2.200 or later
- CorrectionPreface 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.
- Deletion16-2-9. Delete the notes sentence・If set value of CF-03
is 2 and fross value is minus, BCD output shall be data
over condition.
Due to ECN No.FN11-02123
- Deletion6-9-1. Delete the notes sentence・The tare weight
cancellation is not accepted when gross value is below
the zero.
Due to ECN No.FN12-02088
-CorrectionChange of Minebea’s Logo.
- Addition2-3. Add the applicable connector.
2-4. Add the applicable connector and note.
2-5. Add the applicable connector and note.
Data Manual NO. Revision reason(content)
Due to ECN No.FN12-02095
-Correction7-2., 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.
-Addition4-3-8. 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
-Correction1-1. 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.
2012/12 DRW. NO. EN294-1492-D
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.
-Addition7-2. 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
-Addition16-1-1. Add the resolution.
16-1-2. Add the resolution.
18-3. Add the resolution.
Due to ECN No.FN13-02078
2013/05 DRW. NO. EN294-1492-E
- Addition-
15. Add a sentence to the configuration table.
IX
Data Manual NO. Revision reason(content)
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
2015/07 DRW. NO. EN294-1492-F
2016/05 DRW. NO. EN294-1492-G
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.
Due to ECN FN16-02057
- DeletionDelete ‘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.
X
Contents
FOREWORD ............................................................................................................................................................ I
MARKS AND REFERENCES DESCRIBED IN THIS MANUAL ............................................................................. I
FOR SAFE OPERA TION ........................................................................................................................................ II
1. LOCA TION OF INSTALLATION ...................................................................................................................... II
2. POWER SUPPLY ............................................................................................................................................ V
3. INSTRUCTIONS FOR USE ............................................................................................................................ V
4. CONFORMITY STANDARD .......................................................................................................................... VI
DIVISIONAL HISTOR Y ....................................................................................................................................... VIII
1. NAME AND FUNCTION OF EACH POINT ..................................................................................................... 1
1-1. FRONT PANEL .............................................................................................................................................. 1
1-3. SIDE ........................................................................................................................................................... 4
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. OPERA TION .................................................................................................................................................. 15
3-1. CHANGEOVER OF MODE ............................................................................................................................. 15
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 C FUNCTION DATA ...................................................................................................... 33
5-2. FUNCTION OF C FUNCTION DATA ................................................................................................................. 34
6. VARIOUS FUNCTIONS BY C FUNCTION DAT A ......................................................................................... 37
6-1. SETTING OF DECIMAL POINT DISPLAY POSITION ............................................................................................ 37
6-3. CONDITION OF OVER DISPLAY ( OR DISPLAY) ............................................................................... 37
6-4. UNIT ......................................................................................................................................................... 37
6-6. NET WEIGHT SIGN INVERSION .................................................................................................................... 38
6-7. ZERO SET ................................................................................................................................................. 38
6-8. ZERO TRACKING ....................................................................................................................................... 39
6-9. POWER ON ZERO ...................................................................................................................................... 40
6-11. CLEAR AT POWER ON ................................................................................................................................. 41
6-12. SETTING WHILE SET MODE 2 OR SET OF PRESET TARE ................................................................................. 41
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
8-9. HOLD ....................................................................................................................................................... 58
8-10. SUB DISPLAY SECTION ............................................................................................................................... 59
8-13. SETTING OF F KEY .................................................................................................................................... 61
8-14. SETTING OF EXTERNAL CONTROL I/O ......................................................................................................... 62
10-2. CONTROL MODE ........................................................................................................................................ 95
10-3. COMPARISON SIGNAL OPERATION ............................................................................................................... 95
10-4. NEAR ZERO (ZEROBAND) COMPARISON OPERATION ................................................................................. 95
10-5. FULL COMPARATIVE OPERATION .................................................................................................................. 95
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
10-19. 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
13-2. DATA FOR M AT .......................................................................................................................................... 109
13-3. FORMAT DATA EXPLANATION ..................................................................................................................... 110
13-4. EXPLANATION OF OUTPUT TYPE ................................................................................................................ 110
14. ST ANDARD RS-485 COMMUNICA TION ................................................................................................ 111
14-1. SPECIFICATIONS FOR STANDARD RS-485 COMMUNICATION ........................................................................ 111
XIII
14-2.
DATA FORM AT .......................................................................................................................................... 111
14-3. ITEM OF STANDARD RS-485 COMMUNICATION SETTING .............................................................................. 111
16-1. ANALOG OUTPUT .................................................................................................................................... 135
18-1. ANALOG SPECIFICATIONS ........................................................................................................................ 196
18-2. SPECIFICATIONS FOR DIGITAL ................................................................................................................... 196
18-4. GENERAL SPECIFICATIONS ....................................................................................................................... 199
18-5. STANDARD SPECIFICATIONS AT THE TIME OF SHIPMENT .............................................................................. 199
23. EXCHANGE OF FUSES .......................................................................................................................... 203
23-1. EXCHANGE PROCEDURE OF FUSE ............................................................................................................ 203
24. DISPLAY CHARACTER PATTERN ......................................................................................................... 204
25. SETTING TABLE FOR FUNCTIONS ...................................................................................................... 205
XIV
y
y
y
y
1. Name and function of each point
1-1. Front panel
(3) Condition display section 1
(4) Condition display section 2
(9) PRESET TARE ke
(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.
(6) ON/OFF ke
(7) SET ke
(8) ACCUM. ke
(2) Load display section
(1) Unit display section
(5) Sub display section
(13) F key
(12) ZERO key
(11) NET/GROSS key
(10) TARE key
1
(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
2
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.
1-2. Rear panel
(6) External control I/O
(7) Protected earth
terminals
(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 Ω be 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.
(5) RS-485 and 2-wires method serial interface terminals
(1) Power supply terminals
(4) Calibratin LOCK switch
(3) Optional parts
mounting section
(2) Load cell terminals
3
1-3. Side
(1) Model instructions seal
(2) Panel mounting metal
(2) Panel mounting metal
(1) Model instruction seal
It shows a model number.
Use when CSD-903 is mounted to the control panel.
4
2. Connecting wires
2-1. Notes for concerning connecting wires
● When connecting with wires, make sure it was turning off the power supply without fail.
● Do not supply the AC power supply until the installation is completed. There is no switch that
switches ON/OFF of power supply in the main body.
● Do not drop the instrument, and do not give a strong impact because the terminal board of the panel
is made of resin.
● Be sure to install and use an acrylic cover of the attachment for the terminal board.
● The tightening torque of terminal screws on the terminal board is as shown in the table below.
Terminal board
Power supply terminal board
Loading cell terminal board
The solder less terminal that suits the terminal board of this terminal is as shown in the table as
below.
Terminal stand
Power supply terminal board
Loading cell terminal board
● The cable connected with the main body should be separated from the noise source such as I/O for
the control, power supply line as possible.
● The Conduit wiring should be the type for exclusive use. Avoid sharing it with other lines.
● Be sure to ground a grounding wire with exclusive use of D-type single grounding. Do not share it
with other groundings for power supply.
● The shield cable line is used for the connection of the external control I/O, and the shield with F.G
terminal of the power supply terminals
Terminal board screw
tightening torque
0.6 N・m
Width of solder less
terminal
6.2 mm or less
Acceptable Oki
solder less terminal
O type 1.25-3 or Y
type 1.25-3.5
5
2-2. Connection with strain gage applied transducer
The instrument can connect with the strain gage applied transducers, such as load cells, pressure
sensors, etc. Here, we describe the example of connection with load cells, so that the connection
with another type of strain gage applied transducers shall be preceded in the same way.
When the tension is applied with the use of tension type or universal (tension/compression) type load
cell, and display of (+) direction is required, connect the input (+) of the load cell to the terminal B and
the input (-) of the load cell to the terminal D individually.
(1) Case 6-wires type connection cable
・ When the length of CAB-501 (our standard cable) is more than 100 m totally, there may have the
・ Shorten the remote sensing input + and remote sensing input – near the main body of load cell.
case that accuracy is out of warranty as the remote sensing function of the instrument does not
work enough due to the resistance of the cable.
However, when the short is made near the instrument, it will not work as the six-wire type.
6
(2) Case 4-wire type connection cable
・ As using the 4-wire cable, shorten the load cell terminals A - F and C - G with the attached shor t bar.
・ When the length of CAB-502 (our standard cable) is more than 30 m totally, there may have the case
CSD-903 does not work in normal operation when the terminal F and G is in the open status.
that the accuracy is out of warranty due to the resistance of cable, the input voltage of the
instrument will be decreased.
7
(3) Case connection of the load cells in parallel
The hopper scale, the track scale, etc, have the case to connect with several pieces of the load cells
in parallel. The parallel connections can be easily executed by using optional SB-310 and SB-320
(Summing type junction box).
CSD-903 can make up to 6 parallel connections when the load cell is 350 ohm type. Please consult us
as for a method over 5 parallel connections.
8
(4) Connecting with load cell, Junction box B-304B for extension, and CSD-903
1) When you use CAB-502 (4 core cable)
・ When you use it with 4 wires method, be sure to make a short-circuited between A-F and between
・ There is the possibility of the descent of the input voltage of the instrument at the time of total 30m
C-G of the load cell terminal board. When terminal F and terminal G are used with opening status,
CSD-903 cannot make normal operation.
or more in length of CAB-502 (our standard cable) and also the possibility of outside of accuracy
due to the resistance of the cable.
B-304B internal terminal connection
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2) When you use CAB-501(6 core cable)
The remote sensing function of the instrument does not function enough due to the resistance of the
cable at the time of total 100m or more in length of CAB-501 (our standard cable), and there may have
the possibility of outside the accuracy guarantee.
B-304B internal terminal connection chart
10
r
2-3. Connection of external control I/O
The function can be controlled from the outside with the external control I/O connector on the rear
panel.
The external control input is executed by shortening each input and COM.1 with a contact point or
open collector after wiring the connector.
The external control output is executed by open collector output.
(Open collector rated: V
The right figure is an external control I/O connector.
The upper line from A1 to A9 is for input signal, and the lower line
from B1 to B12 and A12 is for output signal.
(1) Connection for input
430ohm
・ There are a pulse input and a level input in the recognition of the external control input signal
depending on setting items.
・ Refer to [8-13-1.Seting method of the external control input] for the details.
・ The common of the external control input and the common of the 2 wire serial interface circuit are
・ The common of the external control output is insulated from the other commons.
・ Refer to [8-13-2. Setting method of the external control output] for the details.
・ Connect a suitable serge elimination device for load for protection from external control output.
11
A
2-4. Connection of standard RS-485 interface
Connect with A, B and S.G. on the output terminals for RS-485 interface and the 2 wire serial
interface showing as below figure. Refer to [14-4.Connecting method] as to the connection.
With the standard RS-485, either the command mode or the protocol conforming to the Modbus is
selectable.
(Refer to [15.Modbus communication] as to the Modbus communication.)
・ Stripped length of electrical cable tip is 7 mm.
・ The tightening torque of terminal screws on the terminal block is 0.6 N・m.
・ Please use AWG28 ~ AWG16 for connecting cable.
・ The signal ground of standard RS-485 interface and internal common are connected.
・ Please connect the shield with F.G. terminal of RS-485 interface / 2-wires method serial interface
terminal by using the shielded cable when CSD-903 complies with the CE conformity or applied JIS
standard.
Screw side of terminals
A
B
S.G. Signal ground
pplicable Plug : XW4B-06B-H1.made by OMRON.
Differential I/O (+)
Differential I/O (-)
12
A
2-5. Connection with 2-wires Serial interface
This is the 2-wires method serial interface to connect with a printer, an external display unit, etc.
The 2-wires serial interface is connected with +, - and F.G. shown in the below figure.
CSD-903Internal
equivalent circuit
・ Stripped length of electrical cable tip is 7 mm.
・ The tightening torque of terminal screws on the terminal block is 0.6 N・m.
・ Please use AWG28 ~ AWG16 for connecting cable.
・ There are M252B, etc., made by UNIPULSE as the equipment for the 2-wires method serial interface.
・ The cable must use two cores shielded cable as much as possible and connect the shield with F.G.
・ The equipment for 2-wires method serial interface can be connected up to three in parallel.
・ The commons of the external control input and the 2-wires method serial interface are connected.
・ This internal circuit and photocoupler are insulated.
・ Please connect the shield with F.G. terminal of RS-485 interface/2-wires method serial interface
terminal. Please twist the cable when you don’t use the shielded cable.
(The applicable cable length is up to 100 m with shield, and up to 20 m without shield.)
(Maximum output current : Approx. DC20 mA)
terminal by using the shielded cable when CSD-903 complies with the CE conformity or applied JIS
standard.
Screw side of terminals
pplicable plug : XW4B-06B-H1 (made by OMRON)
Serial interface corresponding equipment
13
2-6. Connection with power supply and ground
Connect the power supply with the power supply terminal board on the rear panel of the instrument
shown as below figure.
Grounding should be the D class with the single earth.
Connection with the power supply and the earth should be made surely according to the figures, and
also within the specified power supply condition.
・ The grounding of the instrument should be the D-class with single earth.
・ When suiting the instrument with the CE conformity standard or JIS standard, please make the
Warning
It may cause an unexpected malfunction due to the effects of noise from other equipments.
single earth with a protective ground terminal.
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