KYOWA NTB-500A User manual

IM-A-941C March 2021
INSTRUCTION MANUAL
NTB-500A/C
MEDIUM SPEED NETWORK TERMINAL BOX
(FOR HARDWARE)
Thank you for purchasing KYOWA’s product NTB-500A/C Medium Speed
Network Terminal Box.
Read this Instruction Manual carefully in order to make full use of the high
performance capabilities of the product.
Do not use the product in methods other than described in this Manual.
This Manual only describes hardware operation of the NTB-500A/C.
For the Dynamic Data Recording Software DCS-100A, refer to the
“DCS-100A INSTRUCTION MANUAL (FOR NTB-500A/C
OPERATION).”
For software operation other than the DCS-100A, refer to the
“NTB-500A/C INSTRUCTION MANUAL (FOR CONTROL
FUNCTIONS).”
Windows are trademarks of Microsoft Corporation, registered in the U.S.A. and other countries.
Generally, company names and trade names described in this Instruction Manual are trademarks or registered
trademarks of the companies.
This Instruction Manual may not be copied or reproduced, in whole or part, without consent of KYOWA.
Copyright © Kyowa Electronic Instruments Co., Ltd. All rights reserved.
The contents of the Instruction Manual and specifications of the software are subject to change without prior
notice.
Kyowa Electronic Instruments Co., Ltd. assumes no liability for any damage resulting from the use of the
software.

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CONTENTS
STANDARD ACCESSORIES .............................................................................4
OPTIONALACCESSORIES ..............................................................................5
SAFETY PRECAUTIONS................................................................................7
PRIOR TO USE ........................................................................................7
SAFETY SYMBOLS ....................................................................................7
LIMITED LIFE PARTS AND PREVENTIVE MAINTENANCE ................................................11
NTB-500A/C REPLACEMENT BEFORE THE END OF SERVICE LIFE .........................................11
NOTATIONS USED IN THE INSTRUCTION MANUAL .....................................................14
1. OUTLINE ..........................................................................................15
1-1 OUTLINE OF NTB-500A/C ........................................................................15
1-2 FEATURES......................................................................................15
1-3 SYSTEM CONFIGURATION.......................................................................16
2. CONTROLS AND INDICATORS .......................................................................17
2-1 NTB-500A/C.....................................................................................17
2-1-1 Top panel ....................................................................................17
2-1-2 Side panel (power connector side) .................................................................18
2-1-3 Side panel (driver holder side).....................................................................18
2-1-4 Side panel (PC connection side) ...................................................................19
2-1-5 Side panel (NTB-500A/C coupling side) ............................................................19
2-1-6 Bottom panel .................................................................................20
2-1-7 Power connector ...............................................................................21
2-1-8 Status of the POWER LED ......................................................................21
2-1-9 BOX No. switch ...............................................................................22
2-1-10 Optional DIP switch ...........................................................................23
2-2 NTB-50A (optional accessory) .......................................................................24
2-2-1 Top panel ....................................................................................24
2-2-2 Side panel ....................................................................................24
2-3 NTB-50B/C (optional accessory)......................................................................25
2-3-1 Top panel ....................................................................................25
2-3-2 Side panel ....................................................................................25
2-4 NTB-51A/C (optional accessory) .....................................................................26
2-4-1 Top panel ....................................................................................26
2-4-2 Side panel ....................................................................................27
2-5 COUPLING AND DISTRIBUTED ARRANGEMENT ...................................................28
2-5-1 For mounting NTB-500A/C units by using the coupling plate (optional accessory, model: CN-10A) ..............30
2-5-2 For mounting NTB-500A/C units (2) to DIN rail ......................................................34
2-5-3 For distributed arrangement ......................................................................37
3. HOW TO INSTALL ..................................................................................39
3-1 INSTALLATION PROCEDURES....................................................................39
3-2 MOUNTING THE MEASURING UNIT ..............................................................40
3-3 CONNECTING THE NTB-500A/C...................................................................41
3-3-1 When connecting one NTB-500A/C ...............................................................41
3-3-2 When coupling multiple NTB-500A/C units .........................................................42
3-3-3 When distributing the multiple NTB-500A/C units ....................................................43
3-3-4 When connecting one NTB-500A/C and using the automated measurement function ..........................44
3-3-5 When coupling multiple NTB-500A/C units and using the automated measurement function ....................45
3-3-6 When distributing the multiple NTB-500A/C units and using the automated measurement function ...............46
3-4 SETTING BOX NO. SWITCH ......................................................................47

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3-5 SETTING THE TERMINATION RESISTOR...........................................................48
3-6 SETTING THE LENGTH OF THE COMMUNICATION CABLES.........................................49
3-7 CONNECT SENSOR AND SET CH MODE ...........................................................51
3-7-1 Connect Sensor(NTB-50A) ......................................................................51
3-7-2 Connect sensor (NTB-50B/C) ....................................................................54
3-7-3 Connect Sensor(NTB-51A/C) ....................................................................58
3-8 GROUNDING ...................................................................................60
3-9 CONNECTING POWER ...........................................................................61
3-9-1 Connecting DC power ..........................................................................61
3-9-2 Connecting AC adapter..........................................................................62
3-10 POWER ON/OFF ................................................................................63
3-10-1 Power ON...................................................................................63
3-10-2 Power OFF ..................................................................................63
4. INSTALLAND UNINSTALL THE DEVICE DRIVER FOR THE USB-CAN CONVERTER .......................64
4-1 INSTALL THE KVASER DRIVERS FOR WINDOWS...................................................64
4-2 CONNECT THE USB-CAN CONVERTER TO THE PC .................................................66
4-3 CHECKING AFTER CONNECTING THE USB-CAN CONVERTER ......................................67
4-4 UNINSTALL THE KVASER DRIVERS FOR WINDOWS ................................................69
5. WITH THE KYOWA’S EDX SERIES ....................................................................70
5-1 FLOWCHART ...................................................................................70
5-2 SET THE NTB-500A/C ............................................................................71
5-2-1 Set the communication speed .....................................................................71
5-2-2 Automated measurement function .................................................................72
5-2-3 Factory-configured settings of the CAN communication conditions........................................72
5-2-4 Factory-configured settings of the measuring conditions.................................................72
5-3 CAN CONDITIONS OF THE NTB-500A/C............................................................73
5-3-1 CAN communication conditions ..................................................................73
5-3-2 Message ID...................................................................................73
5-3-3 Data type.....................................................................................73
5-3-4 Format of the message ..........................................................................74
5-4 WITH THE AUTOMATED PROGRAM "N5H_SetAuto_xxxx.exe " ........................................75
5-4-1 Changing the CAN communication conditions .......................................................78
5-5 WITH THE EDX-100A (DCS-100A)..................................................................79
5-5-1 Required items on the automated program “N5H_SetAuto_xxxx.exe” .....................................80
5-5-2 Set the CAN conditions (DCS-100A)...............................................................80
6. DETAILS OF OPTIONALACCESSORIES ...............................................................86
7. TROUBLE SHOOTING...............................................................................87
8. TECHNICAL INFORMATION REQUIRED FOR MEASUREMEMT..........................................90
8-1 COMPENSATING NONLINEARITY IN STRAIN GAGE (QUARTER BRIDGE METHOD)....................90
8-2 HOW TO COMPENSATE TEMPERATURE INFLUENCE ON LEAD WIRE (3-WIRE SYSTEM CONNECTION)..91
8-3 COMPENSATING GAGE FACTOR..................................................................92
8-4 COMPENSATION FOR LONG LEAD WIRE AND CABLE ..............................................92
9. SPECIFICATIONS ...................................................................................94
9-1 HARDWARE SPECIFICATIONS OF THE NTB-500A,NTB-500C .........................................94
9-2 HARDWARE SPECIFICATIONS OF THE NTB-50A, NTB-50B, NTB-50C ..................................96
9-3 HARDWARE SPECIFICATIONS OF THE NTB-51A,NTB-51C ...........................................97
10. OUTSIDE DRAWING ...............................................................................98
10-1 OUTSIDE DRAWING OF THE NTB-500A/C .........................................................98
10-2 OUTSIDE DRAWING OF THE NTB-50A (optional accessory) ............................................99
10-3 OUTSIDE DWARING OF THE NTB-50B/C (optional accessory) ..........................................99

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10-4 OUTSIDE DRAWING OF THE NTB-51A/C (optional accessory) .........................................100

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STANDARD ACCESSORIES
The following accessories are packed with the NTB-500A/C Medium Speed Network Terminal Box (hereinafter referred to as the
NTB-500A/C).
When unpacking, check the contents to ensure that all accessories are enclosed.
●Instruction Manual
●Sample Software *3
●Automated program 1 (DVD) *1
●Device driver for the USB-CAN converter (Kvaser Drivers for Windows)
●Dynamic Data Recording Software: DCS-100A
●DCS-100A password sheet
●Diagram sticker 1
●DC Power Cable: P-76 1
●Ground Wire: P-72 1
●Rubber foot 4
●"Terms and Conditions of New Product Warranty" document: 1
●Driver holder, binding head screws with POM washere attached × 2 (M3×6) and small screwdriver 1 set
●Dummy panel for the NTB-500A/C, binding head screws with POM washere attached ×2 (M3×6) 1 *2
*1 The Dynamic Data Recording Software DCS-100A is a standard accessory for the following model.
NTB-500A/C
Products other than those described above do not include the DCS-100A and password sheet for installation.
However, you are able to use the DCS-100A trial version without a password.
To use the DCS-100A after the trial period, purchase the DCS-100A and re-install it again.
*2 Dummy panel for the NTB-500A/C
When the NTB-500A/C has free unit, the NTB-500A/C is delivered with dummy panels.
*3 For the sample software, see the NTB-500A/C Instruction Manual (For Control Functions).

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OPTIONAL ACCESSORIES
●AC adapter SA-10A-EDS (100 to 240 VAC)
●Strain Unit (one-touch lock type terminal block) NTB-50A * Discontinued in 2016.
* Only NTB-500A can be mounted.
●Strain unit (one-touch type terminal block) NTB-50B * Discontinued in 2020.
* Only NTB-500A can be mounted.
NTB-50C * Only NTB-500C can be mounted.
●Voltage/Thermocouple Unit NTB-51A * Discontinued in 2020.
* Only NTB-500Acan be mounted.
NTB-51C* Only NTB-500C can be mounted.
●Synchronous-sampling-communication cable N-119 (cable length: 1 m)
H-12349 (cable length: 3m)
H-12349 Z5 (cable length: 5 m)
H-12349 Z10 (cable length: 10m)
H-12349 Z15 (cable length: 15m)
H-12349 Z20 (cable length: 20m)
H-12349 Z25 (cable length: 25m)
H-12349 Z30 (cable length: 30m)
H-12349 Z40 (cable length: 40m)
H-12349 Z100 (cable length: 100m)
* The H-12349 Z*** are custom-made products.
Note: When requiring the cable other than the above, contact Kyowa or
our representatives.
●Synchronous-sampling Y cable N-120
●Coupling plate for 2 NTB-500A/C units CN-10A
●Coupling plate for 4 NTB-500A/C units CN-11A
●Dummy Panel NTB500-DUMMY
●Power Supply Unit Box for NTB Series NTB-20A
●USB Cable N-38
●Data Analysis Software DAS-200A

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Other Optionals
●USB-CAN converter Kvaser Inc.
Model: Leaf Light HS (Discontinued product)
Model: Leaf Light HS V2 (Successor)
●Termination resistor Vector Japan Co., Ltd.
Model: CANterm120
●DIN rail (recommended) TAKACHI ELECTRONIC INDUSTRIAL Co., Ltd. (35 mm)
●DIN rail mounting plate (recommended) TAKACHI ELECTRONIC INDUSTRIAL Co., Ltd.
Model: DRA-1

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SAFETY PRECAUTIONS
(Do not forget to read the safety precautions prior to use.）
The product is designed to be used according to "9. SPECIFICATIONS."
Do not use the product in an environment exceeding the specifications. Otherwise, it may cause troubles.
PRIOR TO USE
For safe use of the product, do not forget to read the "Safety Precautions" prior to use.
Kyowa Electronic Instruments Co., Ltd. assumes no liability for any damage resulting from the user's failure to comply with the
safety precautions.
For safety operation of the product, the following symbol marks are used in the Instruction Manual.
ＧＮＤ
Indicates “PROTECTIVE GROUND TERMINAL.”
Be sure to connect the GND terminal to the ground.
SAFETY SYMBOLS
For safety operation of the product, the following symbol marks are used in the Instruction Manual.
WARNING
Improper operation of the system will result in death or severe injury to the operator.
CAUTION
Improper operation of the system may result in injury to the operator and physical damage of the system.
Prohibited
Prohibited acts

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WARNING
Power supply
To prevent a fire hazard, ensure that the power supply voltage specified for the product matches the local line voltage before
connecting the system to the DC power. When using the optional AC adapter, check the voltage range of the AC power
outlet before connecting.
AC adapter
To prevent an electric shock or fire hazard, use an optional accessory AC adapter (SA-10A-EDS).
Avoid using in environment with inflammable gas, etc.
To prevent the risk of fire hazard or explosion, do not use the product in an environment with inflammable gas, vapor, or
dust.
If any trouble occurs
To prevent a fire hazard, if smoke is emerging from the product, immediately turn OFF the power switch and disconnect the
DC power cable or AC adapter to terminate the system operation.
In case if any foreign matters or water are entered or the product is dropped, immediately turn OFF the power.
When it started thundering, do not touch the product or cables. Otherwise, it may cause electric shock.
Protective ground
Be sure to connect the GND terminal to the ground. Otherwise, it may cause an electric shock hazard, lower the
performance, and cause trouble.

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To prevent troubles and accidents caused by erroneous handling and installation, fully understand the operating instructions and
operating environment and properly use the product with special care to have the product safely fulfill its performance.
CAUTION

Do not use the product outdoors.
Otherwise, it may cause an electric shock, fire hazard, lower the performance and cause trouble.
Before touching terminals of the product, be sure to discharge static electricity from your body.
Otherwise, it may lower the performance and other issues may occur.
When using the NTB-51A, the following points should be remembered.
Do not use the product in an environment where the wind blows directly to terminals. Otherwise, it may lower the
performance and interrupt the measurements. If use under direct wind is inevitable, prepare a windshield or take proper
measures.
When soldering lead wires, do not heat the lugs of the soldering, screw-fixed terminal block for a long time by using a
soldering iron. Otherwise, it may damage the terminal block plastic and internal PCB.
Wire the product properly based on the terminal array.
To prevent short-circuit trouble, fasten screws on a terminal block.
Use the product with the temperature ranging from -10 to 50℃.
Otherwise, it may lower the performance and other issues may occur.
If use under direct sunlight or in a cold place is inevitable, prepare a sunscreen or take proper measures to keep it warm.
Use the product in the specified operating humidity range 20 to 85%.
Use in a humid place exceeding the specified range or where it is exposed to splashing water may lower the performance
and cause trouble.
Do not use the product immediately after the change in the environment.
Allow the product adequate time to adjust to the ambient environment prior to use.
In addition, abrupt changes in ambient temperature during transportation, etc. may cause condensation, which may result in
lower performance and or damage the system.

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CAUTION
Use the product under environment without excessive vibration or high impact.
Use the product under environment without excessive vibration or high impact.
Do not apply excessive vibration or high impact to the product. Otherwise, it may lower the performance and other issues
may occur.
Do not use the product under dusty environment.
Use the product under environment where the PC may be used.
Do not use the product in the strong electromagnetic field.
Use the product in a magnetic field environment where the PC may be used.
Performance may be lowered and erroneous operation and troubles may result if it is used near a telemetry system,
microwave oven, electronic furnace or any other equipment generating a strong magnetic field.
Do not use the product under poor conditions.
Use the product in the specified voltage range.
DC power: 11 to 16 VDC
Optional accessory AC adapter (SA-10A-EDS): 100 to 240 VAC (50 Hz/60 Hz)
The power supply used for the product should not experience an instantaneous power failure and be free from noise.
The specifications of the optional accessory AC adapter (SA-10A-EDS) is as follows.
Input voltage: 100 to 240 VAC (50 Hz/60 Hz)
Output voltage (output current): 12 V (1.5 A)
Operating temperature range: 0 to 40 ℃
The AC adapter (SA-10A-EDS) is a consumable item. Replace it every five years.
Do not turn ON the power switch immediately after turning it OFF.
After turning OFF the power switch, wait (5 seconds) until the power supply is shut OFF before turning ON the power
switch again.
Do not pull cords and cables.
Lay cords and cables with a certain allowance so that excessive force is not applied to the connections.
Pulling or applying excessive force may cause negatively affect or interrupt the measurement.
Do not disassemble or modify the product. Otherwise, it may cause electric shock when handling, damage to the system, or
other problems. This warranty does not cover any damaged or defective parts that results from disassembling or remodeling.
Do not insert foreign matters to connectors.
Otherwise, it may cause troubles.
Avoid installing sensors and products near a welding machine.
Failure to do so will pose the risk of erroneous data, malfunction, and failure.
Take care when handling the DVD.
Do not expose the DVD to direct sunlight, high temperature, or high humidity.
Do not apply pressure to the DVD by laying object or bending.
Dust, scratches, and fingerprints on either side of the DVD-R can cause write errors.
Preheat the product before use.
After the power ON, always preheat the product for approximately 5 minutes.
The measuring unit that can be mounted differs depending on the measuring instrument.
If it is mounted incorrectly, the connector will be damaged and will fail.
Be sure to check the combination of the measuring instrument and the measuring unit that can be mounted.
Measuring instrument: Measuring unit.
NTB-500A: NTB-50A, NTB-50B, NTB-51A
NTB-500C: NTB-50C, NTB-51C

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LIMITED LIFE PARTS AND PREVENTIVE MAINTENANCE
The product consists of various electronic components and those components, if not all, have a useful life.
Using them exceeding the years specified according to each part type (useful life) may affect the characteristics of the product,
resulting in a malfunction or a failure. You need to replace parts on a regular preventive maintenance schedule.
Please note that we may not be able to accept replacement or repair if the parts are no longer available.
Limited life parts used with the product are as follows.
Relay
A relay's insulation will inevitably degrade or a relay itself will be damaged.
Aluminum electrolytic capacitor
The signal-noise ratio will lower due to capacity shortage or smoke will be emitted due to liquid leak, resulting in a
malfunction of the product.
EEPROM
EEPROM will result in malfunctions or degraded performance.
One-touch lock type terminal block (NTB-50A)
The one-touch lock type terminal block is a consumable item.
The terminal block is made of plastic. Through repeated connections/disconnections, the lock function will gradually wear out
and may give a poor connection (unable to be locked or unable to be released).
The one-touch lock type terminal block is considered to be a consumable item. It is not covered under the terms of the
warranty.
The replacement frequency is about two years, assuming twice a day (insertion and removal) of use, 20 days a month.
* Due to the discontinuity of the one-touch lock type terminal block, the NTB-50A is discontinued in 2016.
The quantities are limited and not made available to everyone.
After the stock runs out, we will use the NTB-50B/C one-touch type terminal block.
One-touch type terminal block (NTB-50B/C)
The one-touch type terminal block is a consumable item.
The one-touch type terminal block has leaf springs. Through repeated connections/disconnections, the leaf spring will
gradually wear out and retaining force may decrease. The one-touch lock type terminal block is considered to be a consumable
item. It is not covered under the terms of the warranty.
The replacement frequency is about two years, assuming twice a day (insertion and removal) of use, 20 days a month.
NTB-50B discontinued in 2020.
AC adapter (optional accessory)
Heat and smoke will be emitted, resulting in an unstable voltage.
To operate the product normally, finding a sign of the product failure early by daily/periodic inspections and taking the corrective
action are required.
For inspection, contact Kyowa or our representatives.
*All components do age and will fail
NTB-500A/C REPLACEMENT BEFORE THE END OF SERVICE LIFE
Preventive maintenance and replacement parts are a cost-effective way of keeping the performance and extending the service life of
the product.
Regardless of the replacement parts, the product itself gradually deteriorates with age.
Before the expected service life is reached, consider replacing the product with a new one or the latest series as preventive
maintenance.

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Read this notes carefully in order to make full use of the high performance capabilities of an One-touch Lock Type Terminal
Board.
Note that the instructions of the one-touch lock type terminal block are different from that of the one-touch type terminal block.
Notes for using one-touch lock type terminal block (NTB-50A)
●
Notes for connecting lead wires
● Notes for setting back lock buttons
● Press the following position.
Do not press the edge of the lock buttons. Or, the lock buttons may causes troubles
such as unable to be locked or unable to be unlocked.
Be sure to press the above position with the accessory small screwdriver.
● For connection, always use the accessory small screwdriver or an object with a fine head.
● If the lock button does not work, insert the lead wire all the way to its end with pressing the lock button.
● Insert the lead wire with its coating peeled off about 10 mm all the way to its end into the round hole of the input
terminal.While holding the lead wire, set back the lock button to the original position with your finger. Be sure to insert the
lead wire all the way to its end. Or, it will not fix firmly.
●Available lead wires are as follows.
Solid wire: φ0.4 mm to φ1.2 mm (UL AWG16 to 26)
Stranded wire: 0.2 mm2 to 0.75 mm2 (ULAWG20 to 24)
Be sure to use the above lead wires. Or, a breaking or connection error will happen.
● For connecting a strain gage, do not connect gage leads (lead wires directly connected from the strain gage) directly.
● Use a gage terminal and convert the gage leads to the applicable lead wires or use a strain gage with pre-attached lead
cables.
● If you connect gage leads directly, gage leads may be broken since they are too thin.
● Never set back the lock buttons violently with your fingers or a small screwdriver.
Terminals will be deformed and the following troubles will happen.
・The lock buttons will unable to be locked.
・The lock buttons will unable to be unlocked.
・The lock buttons will be deformed.
・The lead wires will fall out.
● Gently set back the lock buttons to the original position with your fingers.
The one-touch lock terminal block is made of plastic.Over time and with use, the lock button will gradually fail.
(unable to be locked or unable to be unlocked).
It is not covered under the terms of the warranty.
The replacement frequency is about two years, assuming twice a day (insertion and removal) of use, 20 days a month.

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Read this notes carefully in order to make full use of the high-performance capabilities of a one-touch type terminal block.
Note that the instructions of the one-touch lock type terminal block are different from that of the one-touch type terminal block.
Notes for using one-touch type terminal block (NTB-50B/C)
●Notes for connecting lead wires
● Press the following position.
Do not press the edge of the button. Otherwise, it may cause troubles.
Be sure to press the above position with the accessory small screwdriver.
● For connection, always use the accessory small screwdriver or an object with a fine head.
● With pressing the button, insert the lead wire with its coating peeled off all the way to its end into the
round hole of the input terminal. Release the button to fasten the lead wire.
● Gently pull the lead wire to check if it is securely fastened.
● Insert the lead wire with its coating peeled off approx. 10 mm all the way to its end into the round hole of the input
terminal. The NTB-500A/C has a picture of "actual size" applicable lead wire with its coating peeled off.
● The available wires are as follows.
Solid wire: φ0.4 mm to φ1.2 mm (UL AWG16 to 26)
Stranded wire: 0.2 mm2 to 0.75 mm2 (ULAWG20 to 24)
Be sure to use the above lead wires. Or, a breaking or connection error will happen.
● For connecting a strain gage, do not connect gage leads (lead wires directly connected from the strain gage) directly.
● Use a gage terminal and convert the gage leads to the applicable lead wires or use a strain gage with pre-attached lead
cables.
● If you connect gage leads directly, gage leads may be broken since they are too thin.
The one-touch type terminal block is a consumable item.
The one-touch type terminal block has leaf springs. Through repeated connections/disconnections, the leaf spring will
gradually wear out and retaining force may decrease. The one-touch lock type terminal block is considered to be a
consumable item. It is not covered under the terms of the warranty.
Approx. 9 to 10 mm
Lead wire

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NOTATIONS USED IN THE INSTRUCTION MANUAL
The following notations are used in the Instruction Manual for convenience.
●Names described on the panel surface
Names described on the panel surface are expressed in double quotation mark " ".
●Informational notes
Certain notations are used as necessary to attract your attention to information that requires special care when handing the
product, and to information provided for reference purposes.
Examples of Notations
●Abbreviated notation
In this Instruction Manual, cable names are abbreviated as follows.
Synchronous-sampling-communication cable for NTB-500A/C (N-119) → Synchronous communication cable (N-119)
Synchronous-sampling Y cable for NTB-500A/C (N-120) → Synchronous Y cable (N-120)
●NTB-500A/C
The measurement units that can be mounted are different for NTB-500A and NTB-500C. Other functions are the same. The
common items are described as NTB-500A/C.
●NTB-50A/B/C
Excluding the terminal block, the NTB-50A (one-touch lock type terminal block) have the same functions as the NTB-50B/C
(one-touch type terminal block). The NTB-50A/B/C indicates that the item is common to all.
●NTB-51A/C
The NTB-51A and NTB-51C can be mounted on different measuring instruments. Other functions are the same. The common
items are described as NTB-51A/C.
●Essential precautions required when handling the product.
NOTE
●Reference items required when handling the product.
MEMO

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1. OUTLINE
1-1 OUTLINE OF NTB-500A/C
The NTB-500A/C is a measuring instruments that is capable of measuring signal only by connecting the USB-CAN converter (Leaf
Light HS V2) to the PC. Up to 8 NTB-500 units (64 channels) can be operated in synchronous operation.
Applicable sampling frequency is 1 Hz (max. 64 channels) to 1 kHz (max. 8 channels). The NTB-500A/C can measure data in a
wide range from statistic to semi-dynamic phenomena.
With the NTB-500A/C, three types of unit are provided; NTB-50A (strain unit) for measuring strain, NTB-50B/C, and NTB-51A/C
(voltage/thermocouple unit) for measuring voltage and temperature.
The NTB-50A/C is a one-touch lock type terminal block. The NTB-50B/C is a one-touch type terminal block. Excluding the
terminal block, the NTB-50A (one-touch lock type terminal block) have the same functions as the NTB-50B/C (one-touch type
terminal block).
* NTB-50A was discontinued in 2016 due to the discontinuation of the one-touch locking terminal block.
* NTB-500A, NTB-50B, and NTB-51A were discontinued in 2020 due to discontinuation of the connector to be connected.
* NTB-500A and NTB-500C can be connected.
.
1-2 FEATURES
●Simultaneous sampling of all channels, ensuring simultaneity of data
●Applicable sampling frequency is 1 kHz/8 channels (100 Hz/64 channels). The NTB-500A/C can measure semi-dynamic
phenomena data.
●Capable of designing the system according to your purpose since measuring units can be changed by every 4 channels.
●The total cable length between the PC and NTB-500A/C units is up to 400m. This allows for flexible NTB-500A/C placement
and layout freedom.
●Capable of increasing channels easily by connecting NTB-500A/C units.
●Compact and lightweight, This design allows for closer mounting and the shortening of an individual sensor cable.
●The NTB-50A/B can measure large strain (±300,000 μm/m) since it has a built-in bridge box.
●The NTB-51A can measure voltage up to 50 V and can measure temperature of thermocouples (TC/K , TC/T).
●The NTB-51A is isolated between channels.
●Capable of operating and controlling the NTB-500A/C with the Dynamic Data Recording Software DCS-100A.
●The Data Analysis Software DAS-200A is optional software that reproduces and analysis data after recording.
●Capable of connecting the CAN network system easily without using an USB-CAN converter.

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1-3 SYSTEM CONFIGURATION
For using the Dynamic Data Recording Software DCS-100A
PC
The system requirements (including the CPU, OS, memory, and display) of the PC is set according to the control software
DCS-100A specifications.
Check the current DCS-100A specifications on our website.
Peripherals
Measuring Unit
NTB-50A/B/C (strain unit), NTB-51A/C (voltage/thermocouple unit)
Synchronous
communication cable
N-119 (1 m)
Note: When requiring the cable other than the above, contact Kyowa or our representatives.
Synchronous Y cable
N-120 (for distributed arrangement)
Termination resistor
Vector Japan Co., Ltd.
Model: CANterm120
USB-CAN converter
Kvaser Inc.
Model: Leaf Light HS (discontinued product)
Model: Leaf Light HS V2 (successor)
Stra in ga ge
Strain Unit
NTB-50A
Voltage/Thermocouple Unit
NTB-51A
Measuring Unit 2
CH5 to CH8
Measuring Unit 1
CH1 to CH4
Strain gage transducer
Voltage
Thermocouple
(K type and T type)
NTB-500A
CH9 to CH16
Input Measuring Unit NTB-500A
Ma ster
Sla v e
NTB-500A
CH57 to CH64
Sla v e
・・・
Synchronous Y cable
(N-120)
Synchronous Y cable
(N-120)
・・・
USB-CAN
Converter
(Leaf Light HS)
Termination resistor
(CANterm120)
PC
Install
・Device driver for USB-CAN Converter
・Control software：DCS-100A
Synchronous
communication cable
(N-119)
Synchronous
communication cable
(N-119)
Synchronous
communication cable
(N-119)

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2. CONTROLS AND INDICATORS
2-1 NTB-500A/C
Suppose the NTB-50A/B/C (strain unit) is mounted to the unit 1 and NTB-51A/C (voltage/thermocouple unit) is mounted to the
unit 2.
2-1-1 Top panel
③
①
⑥
⑤
⑦
⑧
④
②⑨
①Power connector Power connector.
Power voltage range is 11 to 16 VDC.
②Communication connector For connecting the PC.
③Coupling connector For coupling the other NTB-500A/C units.
④Unit 1 For mounting a measuring unit. (CH1 to CH4)
⑤Unit 2 For mounting a measuring unit. (CH5 to CH8)
⑥“POWER” LED Lights up while the NTB-500A/C is ON.
⑦“BOX No.” switch Digital switch for setting the “BOX No.”
⑧Optional DIP switch For function settings.
⑨“GND” Terminal “GND” terminal (protective grounding)
Be sure to ground the “GND” terminal.

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2-1-2 Side panel (power connector side)
②①
①Power connector Power connector.
Power voltage range is 11 to 16 VDC.
②“GND” terminal “GND” terminal (protective grounding).
Be sure to ground the “GND” terminal.
2-1-3 Side panel (driver holder side)
①
①Fixing hole for for driver holder Used for fixing the accessory driver holder.
●When mounting the driver holder, use the accessory screws (binding head screw with POM washer attached, M3×6).
●Use the following AC adapter (optional accessory).
AC adapter: SA-10A-EDS (100 to 240 VAC)
●Before connecting the DC power, check the power voltage.
The power voltage range is 11 to 16 VDC.
If the power voltage exceeds the above specified voltage range, do not connect the DC power.
Or, it may cause trouble or damage to the NTB-500A/C.
Use the DC power cable P-76 (accessory) for connecting the DC power.
NOTE
MEMO
MEMO

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2-1-4 Side panel (PC connection side)
①
①Communication connector For connecting the PC.
2-1-5 Side panel (NTB-500A/C coupling side)
①
①Coupling connector For coupling the other NTB-500A/C units.
* NTB-500A and NTB-500C can be connected.
●Mount the driver holder as follows.
●Do not connect the PC to the coupling connector.
●You cannot couple the NTB-100A series, NTB-201A, and NTB-21A.
NOTE
Driver holder
Binding head screw with POM washer attached, M3×6
MEMO