KYOWA WP-120A User manual

WP-120A
IM-A-1424 2023/01
D01353195A
Instrumentation Amplifier
Instructions for Use

2
Introduction
Thank you for purchasing the WP-120A Instrumentation
Amplifier (hereinafter called“indicator”).
Please read this document in its entirety before using the
product to get the best performance and ensure safe and
proper operation.
Features
oFive-digit digital display enables direct reading of physical
quantities.
oWaveforms can be checked in real time even when they are
being measured.
oSupport for TEDS sensors makes calibration easy.
Automatic calibration is also possible when a TEDS sensor
is connected.
oAn equivalent input function is included, making sensitivity
adjustment without actual loads easy.
oSupports remote sense functions. Even using long cables
measurement is possible without losing precision.
oStatic strain measurement is possible. Identifying load cell
defects and other problems through plastic deformity is easy.
oIn addition to high and low limit comparison, this indicator
also supports high high limit and low low limit comparison
functions.
oMeasurement is possible using combinations of band and
five zone judgments as desired.
Each zone supports a variety of judgments, including con-
stant comparison, sampling, peak, bottom, peak to peak,
average value, maximum/minimum and inflection point.
oDIN size supports incorporation with testing devices and
manufacturing equipment, for example.
oD/A output according to designated values is a standard
feature.
oProduct complies with RoHS.
oWaveform display function allows input signals to be
checked as waveforms.
oMeasurement data can be saved on SD cards and in the
built-in memory of the unit.
oLinearization function improves linearity of load measurements.
Included accessories
If anything is missing or damaged, contact us. (For contact
information, see the last page.)
SENSOR connector plug
B2CF 3.50/18/180LR SN OR BX or equivalent part 1
CONTROL connector plug
HDCB-37P (05) connector or equivalent part 1
HDC-CTH (4-40) (10) case or equivalent part 1
Power input terminal bank cover
(pre-installed on unit) 1
Disclaimers
Information is given about products in this manual only
for the purpose of example and does not indicate any
guarantees against infringements of third-party intellectual
property rights and other rights related to them. We will
bear no responsibility for infringements on third-party intel-
lectual property rights or their occurrence because of the
use of these products.
SDHC Logo is a trademark of SD-3C, LLC.
Other company names, product names and logos in this
document are the trademarks or registered trademarks of their
respective owners.

3
Introduction
Using SD cards
Avoid using SD cards with adapters for microSD cards and
miniSD cards.
Media types
Compatible media
SD/SDHC cards
Recording capacity
2GB – 32GB
Recommended speed class
Class10
Recording media
This system uses SD/SDHC cards for recording.
oIn this manual, SD/SDHC cards are referred to as“SD cards”.
oPrepare recording media that has been formatted by the
WP-120A (page68).
oDo not use a computer to delete, move or otherwise alter
data recorded on an SD card. Doing so could cause the
WP-120A to become unable to properly record data.
We recommend the following SD cards.
oSanDisk Ultra PLUS 32GB
oSanDisk Extreme 32GB
Insertion and removal
Always insert and remove SD cards when they are not being
accessed.
Never remove an SD card when the unit is operating (includ-
ing when recording). Doing so could cause recording to fail
or recorded data to be lost, for example. Moreover, doing so
could also damage the unit.
Inserting SD cards
1 Open the recording media slot cover on the bot-
tom of the front of the unit.
2 Push the SD card all the way into the SD card slot
on the right side of the opening.
oThe SD card has a front end that must be inserted
first. Insert the card with the correct orientation.
Forcing a card into the card slot could damage this
unit.
oA clicking sound can be heard when the card is
pushed all the way in.
3 Close the recording media slot cover.
Removing SD cards
1 Open the recording media slot cover.
2 Push the SD card in gently.
The SD card will come out part way.
3 Pull the SD card out by hand.
4 Close the recording media slot cover.
SD card write-protection switches
SD cards have write-protection switches.
Locked
Writing prohibited
Write-protection switch
Writing data can be prohibited by moving
the switch to the LOCK position.
oSlide the write-protection switch to
one direction completely.
oTo use an SD card for recording or to erase recording data
on it or format it, unlock the write-protection.
ATTENTION
When using an SD card with a capacity of 2 GB, FAT file sys-
tem restrictions limit the number of files to 127. Even when
using a card with a larger capacity, we recommend keeping a
maximum of about 1000 data files because processing speed
becomes slower as the number of files increases.

4
Safety information
This document describes the safety instructions for the operation of the indicator. Before operating the product, read this document
carefully to familiarize yourself with the unit.
WARNING Follow the instructions below to avoid risk of
serious personal injury and death.
Never use beyond the rated specifications as there is the danger of property damage, injury, fire or electrical shock.
Never use in flammable gaseous environments including the following locations as there is the danger of explosion.
oLocations containing corrosive or flammable gases
oLocations near water, oil or subject to chemical splash
If the product malfunctions (smells strange or becomes hot), stop using it immediately and unplug the power cord as there is
danger of fire or electrical shock.
Never attempt to disassemble the product.
Carefully check connections and wiring before applying power.
Be sure to ground the product (with ground resistance of 100Ω or less).
To allow the operator to immediately shut off the power to the product, install a switch or circuit breaker that complies with
both IEC60947-1 and IEC60947-3 requirements near the product. The switch or breaker installed must also indicate that it
functions to shut off the power to the unit.
Do not allow foreign objects such as metal fragments that result from cutting panels, wires or other materials to enter this
unit.
If the unit is dropped or subject to strong impacts, it could break. If this occurs, stop using it and contact the seller from which
you purchased it.
Overvoltage category: I
Pollution degree: 2
If the unit is used in a manner not specified by the manufacturer, the protection provided by the unit may be impaired.

5
Safety information
CAUTION Follow the instructions below to avoid risk of
personal injury or property damage.
Disconnect the power cord when performing the following.
When wiring or connecting cables to the terminal banks for connecting the DC power supply, load cells and external inputs
and outputs
Connecting the ground line
Wait for at least one minute between turning the unit on and off.
Never touch the rear panel or connectors while the product is turned on.
When connecting to a power supply, frame ground or signal input/output connector, be sure to wire them correctly after
confirming the signal names and pin assignment numbers. Use shielded cables for signal input/output cables (load cell,
external input/output).
Before use, fix the cables separately so that they do not hang to prevent the connectors from being pulled out and to protect
the connectors from unnecessary pressure.
Conduct wiring in a place so that it will not be together or parallel with electrical wiring.
Avoid use in locations like the following.
oNear a power line
oWhere a strong electric or magnetic field is present
oWhere static electricity or noise, (for example, from a relay) is generated
Do not install in the following environments.
oLocations subject to temperatures exceeding the specified ranges for temperature and humidity
oLocations subject to radiant heat from heat sources
oLocations with high salt or iron content
oLocations exposed to dirt and dust
oLocations subject to direct vibration or shock
oLocations subject to severe temperature changes
oOutdoor, or locations with an altitude of higher than 2000 m
oLocations where freezing or condensation might occur
Do not operate a damaged unit.
The unit is classified as an open-type (built-in) device and must be installed inside a control panel.
If the top cover or panel faces become dirty, wipe it gently with a soft cloth that has been slightly dampened with a diluted
neutral cleaning fluid and wrung out well. DO NOT use a chemically treated dust cloth, paint thinner, or other flammable sol-
vents. Using any of them could damage the coating of the product.
If the product is used in a manner unintended by the manufacturer, the user’s safety may be adversely affected.
Always attach the DC power terminal bank cover when an electric current is present.
If subject to electromagnetic waves (from transceivers, mobile phones, amateur wireless transmissions, etc.), use metal pipes
for the wiring or make other countermeasures using shielding.

6
Safety information
Model for USA
Supplier’s Declaration of Conformity
Model number: WP-120A Series
Trade name: KYOWA
Responsible party: KYOWA AMERICAS INC.
Address: 39555 Orchard Hill Place Suite159 Novi MI48375, USA
Telephone number: [phone]
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1)
this device may not cause harmful interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation.
Information
This equipment has been tested and found to comply
with the limits for a Class A digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when
the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accor-
dance with the instruction manual, may cause harmful
interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful
interference in which case the user will be required to cor-
rect the interference at his own expense.
CAUTION
Changes or modifications not expressly approved by the
party responsible for compliance could void the user’s
authority to operate the equipment.
Model for Canada
Innovation, Science and Economic Development Canada’s
Compliance Statement:
This Class A digital apparatus complies with Canadian
ICES-003.
Cet appareil numérique de la classe A est conforme à la
norme NMB-003 du Canada.
Model for Europe
DECLARATION OF CONFORMITY
This product complies with the
European Directives request, and the
other Commission Regulations.
DECLARACIÓN DE CONFORMIDAD
Este producto cumple con las exigencias de las directivas
europeas y con los reglamentos de la Comisión Europea.
DÉCLARATION DE CONFORMITÉ
Ce produit est conforme aux directives européennes et aux
autres réglementations de la Commission européenne.
KONFORMITÄTSERKLÄRUNG
Dieses Produkt entspricht den Anforderungen europäischer
Richtlinien sowie anderen Verordnungen der Kommission.
Model for UK
This product complies with the applicable UK
regulations.
WARNING
This is a Class A product. In a domestic environment, this
product may cause radio interference in which case the
user may be required to take adequate measures.
ATENCIÓN
Este es un producto de clase A. En un entorno no profe-
sional, este aparato puede producir interferencias de radio,
en cuyo caso el usuario será el responsable de tomar las
medidas necesarias para solucionarlo.
AVERTISSEMENT
Il s’agit d’un produit de Classe A. Dans un environnement
domestique, cet appareil peut provoquer des interfé-
rences radio, dans ce cas l’utilisateur peut être amené à
prendre des mesures appropriées.
Warnung
Dies ist eine Einrichtung, welche die Funk-Entstörung nach
Klasse A besitzt. Diese Einrichtung kann im Wohnbereich
Funkstörungen versursachen; in diesem Fall kann vom
Betrieber verlang werden, angemessene Maßnahmen
durchzuführen und dafür aufzukommen.

7
Safety information
DISCLAIMER
We disclaim all warranty, either expressed or implied, with
respect to this product and the accompanying written materi-
als. In no event shall we be liable for any damages whatsoever
(including, without limitation, damages for loss of business
profits, business interruption, loss of business information
or other loss) arising out of the use of or inability to use this
product.
Disposing of this product
When disposing of this product, including accessories, con-
sumable parts and related items, follow the regulations of the
local, regional and national governments.
For European Customers
Disposal of electrical and electronic equipment and
batteries and/or accumulators
a) All electrical/electronic equipment and waste batteries/
accumulators should be disposed of separately from the
municipal waste stream via collection facilities desig-
nated by the government or local authorities.
b) By disposing of electrical/electronic equipment and
waste batteries/accumulators correctly, you will help
save valuable resources and prevent any potential nega-
tive effects on human health and the environment.
c) Improper disposal of waste electrical/electronic equip-
ment and batteries/accumulators can have serious
effects on the environment and human health because
of the presence of hazardous substances in the
equipment.
d) The Waste Electrical and Electronic Equipment
(WEEE) symbols, which show wheeled bins
that have been crossed out, indicate that elec-
trical/electronic equipment and batteries/
accumulators must be collected and disposed
of separately from household waste.
If a battery or accumulator contains more
than the specified values of lead (Pb), mer-
cury (Hg), and/or cadmium (Cd) as defined
in the Battery Directive (2006/66/EC,
2013/56/EU), then the chemical symbols
for those elements will be indicated beneath the WEEE
symbol.
e) Return and collection systems are available to end users.
For more detailed information about the disposal of old
electrical/electronic equipment and waste batteries/
accumulators, please contact your city office, waste
disposal service or the shop where you purchased the
equipment.
Pb, Hg, Cd

8
Contents
Introduction..................................................2
Features ...................................................2
Included accessories .......................................2
Using SD cards.............................................3
Media types ............................................3
Recording media .......................................3
Insertion and removal ..................................3
Inserting SD cards ......................................3
Removing SD cards.....................................3
SD card write-protection switches ......................3
Safety information ............................................4
1. Names and functions of parts............................. 10
1-1. Front................................................. 10
1-2. Back ................................................. 11
1-3. Home Screen ........................................ 12
1-3-1. Indicator value display.......................... 12
1-3-2.Waveform display .............................. 13
1-3-3. Zooming the waveform display in/out.......... 14
1-4. Buttons and their functions .......................... 14
1-4-1. Digital zero ..................................... 15
1-4-2. Measurement results display. . . . . . . . . . . . . . . . . . . . 15
1-4-3. SENSOR MEMORY/WORK NUMBER setting ...... 17
1-4-4. SD button ...................................... 17
1-5. Status change illustration ............................ 18
1-6. Screen transition diagram ............................ 18
2. Installation ............................................... 19
3. Making connections ...................................... 20
3-1. Connecting to the SENSOR connector................ 20
3-1-1. SENSOR connector ............................. 20
3-2. Connecting a strain gauge transducer................ 20
3-2-1. About the remote sense function............... 20
3-2-2. Notes about bridge voltage (excitation voltage) 20
3-3. Displacement sensor................................. 21
3-3-1. Displacement sensor (voltage).................. 21
3-3-2. Displacement sensor (pulse).................... 22
3-3-3. Displacement sensor (pulse) counting method . 22
3-4. D/A Converter ....................................... 23
3-5. Control signal output terminals (CONTROL connector)23
3-5-1. Connecting control output terminals ........... 23
3-5-2. Control output signals.......................... 24
3-6. Control signal input terminals (CONTROL connector) . 24
3-6-1. Connecting control input terminals............. 25
3-6-2. Control input signals ........................... 25
3-7. RS-232C connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3-8. Connecting the DC power supply input terminals .... 26
4. Settings .................................................. 27
4-1. Basic operation ...................................... 27
4-1-1. Buttons ........................................ 27
4-1-2. Changing setting values........................ 27
4-1-3. Option display.................................. 28
4-1-4. Returning to the Home Screen ................. 28
4-1-5. Pop-up screens................................. 28
4-2. SENSOR settings ..................................... 29
4-2-1. D/A converter .................................. 30
4-3. Load cell calibration.................................. 31
Procedures shared by all calibration methods......... 32
4-3-1. Equivalent input calibration .................... 33
4-3-2. Actual Load Calibration......................... 35
4-3-3.TEDS calibration ................................ 37
4-3-4. Load cell operation settings .................... 40
4-4. Displacement sensor calibration ..................... 41
Procedures shared by all calibration methods......... 42
Locking and unlocking calibration values ............. 42
4-4-1. Equivalent input calibration .................... 42
4-4-2. Actual load calibration.......................... 43
4-5.Work settings ........................................ 44
4-5-1. CONTINUOUS JUDGMENT ...................... 45
4-5-2. BAND JUDGMENT .............................. 46
4-5-3. Zone judgment ................................ 48
4-5-4. Band + Zone judgment......................... 52
4-5-5. CURRENT BAND WAVE & MULTI-ZONE
ARRANGEMENT screen ............................... 53
4-6. Start/stop measurement ............................. 53
4-6-1. Measurement start/stop settings for zone judg-
ment ................................................. 53
4-6-2. Continuous judgment timing chart............. 55
4-6-3. Band judgment timing chart ................... 55
4-6-4. Zone judgment timing chart ................... 56
5. System settings........................................... 65
5-1. Lock and language settings .......................... 65
5-1-1. Lock settings ................................... 65
5-1-2. Language setting............................... 65
5-2. Memory and counter settings........................ 66
5-2-1. INTERNAL MEMORY ............................ 66
5-2-2. OK/NG COUNTERS.............................. 66
5-3.Various settings ...................................... 67
5-3-1. DATE & TIME SETTING. . . . . . . . . . . . . . . . . . . . . . . . . . . 67
5-3-2.TRIGGER OUTPUT............................... 68
5-3-3. RESET TO FACTORY SETTINGS................... 68
5-3-4. SD CARD ....................................... 68
5-3-5. SERIAL COMM. ................................. 70
5-3-6.TEST & INFO .................................... 70
5-3-7. FIELD NETWORK................................ 70

9
Contents
6. Communication functions ................................ 71
6-1. Serial communication................................ 71
6-1-1. Settings ........................................ 71
6-1-2. Command lists ................................. 72
6-1-3. Communication protocol....................... 77
6-1-4. Unique communication protocols .............. 79
6-1-5.Timing ......................................... 87
7. Setting lists ............................................... 88
7-1. Setting menu list..................................... 88
7-1-1. SYSTEM ........................................ 88
7-1-2. SENSOR ........................................ 88
7-1-3.WORK .......................................... 89
7-2. Setting value list ..................................... 90
7-2-1. SETTINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
7-2-2. CALIB. & SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
7-2-3. SYSTEM ........................................ 90
7-2-4. SENSOR ........................................ 91
7-2-5.WORK .......................................... 94
8. Error message list......................................... 96
9.Warranty explanation ..................................... 97
10. Specifications ........................................... 98
11. External drawings ....................................... 99

10
1. Names and functions of parts
1-1. Front
ABCD
A POWER/SD indicator
This lights blue when the unit is on.
It lights magenta when an SD card is being accessed.
B Recording media slot cover
Open the cover to reveal the USB port (left) and SD card
slot (right) inside.
ATTENTION
Do not use a USB hub when connecting the USB port
on this unit and a computer. Connect them directly.
C LINK indicator
D Display
This shows indicator and setting values.
NOTE
This display is made with extremely high precision and
has at least 99.99% effective pixels. Rarely, some pixels
might not light or stay lit, but this is not a malfunction.