Frequency Inverter
Convertidor de Frecuencia
Inversor de Freqüência
Frequenzumrichter
Variateur de Vitesse
Преодразователь частоты
Frequentie Regelaar
Frekvensomvandlare
CFW-08
User's Guide
Manual del Usuario
Manual do Usuário
Bedienungsanleitung
Manuel d'utilisation
Руководство пользователя
Gebruikers Handleiding
Användarinstruktioner
Motors | Energy | Automation | Coatings
It is very important to check if the
inverter software version is the
Thetablebelowdescribesallrevisionsmade tothismanual.
-2Inclusionof the item 3.3 - European
EMCDirective -Requirements for
-4External Parallel Keypadand
Descriptionchanged of the
for the External Parallel Keypad
Item7.5 (SparePart List) removed
-7Inclusionof new models (22 A, 28 Aand
33A/200-240 V; 24A and 30 A/380-480V)
Addition of new I/O functions
Modificationof circuit breakers table
(installationand connections)
Additionof parameters P253,
Addition of new functions at parameters
Modificationof factorydefault
Addition of error code E32
Inclusion of items into the table of
parametersincompatibility
Changeon the WEG part number
Inclusionof the table containing the
airflowrequirementsforpanel mounting
Inclusionof the following optionals:
KRS-485-CFW08,KFB-CO-CFW08,
KFB-DN-CFW08and KAC-120-CFW08
Inclusionof the new versions
of the control board:A3 and A4
TheSleep function wasadded
(parametersP212, P213and P535)
TheAnalogInputDead Zonefunction
KDC-24V-CFW08optionmodules
Noteson the CFW-08 Nema 4X
and the 575 V lines were added
Modificationof the gainequation
Summary
Fault and Status Messages
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1.1SafetyNotices in the Manual
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1.2SafetyNotices on theProduct
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1.3PreliminaryRecommendations
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Installation and Connection
3.1MechanicalInstallation
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3.1.2Mounting Specifications
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3.2.1Power/GroundingTerminals
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Locationof the PowerTerminals,Grounding
TerminalsandControlTerminalConnections
Power/GroundingWiringand CircuitBreakers
..363.2.4Power Connections
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DigitalInputsas LowLevelActive
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DigitalInput as High LevelActive
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3.2.6TypicalTerminalConnections
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EuropeanEMCDirective-Requirements
forConformingInstallations
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3.3.2Emission and Immunity LevelsDescription
3.3.3InverterModels and Filters
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3.3.4 EMC FiltersCharacteristics
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4.1Keypad(HMI)Description
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4.2.4Parameter Viewing and Programming
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Start-upOperationvia Keypad(HMI)-
Type of Control:LinearV/F (P202 = 0)
Start-upOperation viaTerminals-
Control Mode: Linear V/F (P202 = 0)
Start-upOperation via Keypad -
Control Mode: Vector(P202 = 2)
DetailedParameter Description
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6.2.1Control Modes (V/F and Vector)
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6.2.4FrequencyReferenceSources
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6.2.6Local/RemoteOperationModes
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AccessandRead-onlyParameters-
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6.3.2Regulation Parameters- P100 to P199
6.3.3 Configuration Parameters- P200 to P398
6.3.4 Motor Parameters - P399 to P499
6.3.5 Special Function Parameters - P500 to P599
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Diagnosticsand Troubleshooting
7.1Faults and PossibleCauses
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7.4.1CleaningInstructions
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CFW-08Options andAccessories
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8.1.1InstructionsforInsertionand Removingof
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8.3.1HMI-CFW08-RPInstallation
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8.5 CAB-RP-1, CAB-RP-2, CAB-RP-3, CAB-RP-5,
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8.6.1HMI-CFW08-RSInstallation
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8.6.2HMI-CFW08-RSStart-up
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8.8 CAB-RS-1, CAB-RS-2, CAB-RS-3, CAB-RS-5,
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8.16 KAC-120-CFW08, KAC-120-CFW08-N1M1
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8.18KFIX-CFW08-M1, KFIX-CFW08-M2
8.19KN1-CFW08-M1, KN1-CFW08-M2
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8.21.1Application Criteria
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8.24.2RS-485andRS-232InterfacesDescription
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8.24.3.2Parameter/Variables Resolution
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8.24.3.5Execution and MessageTest
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8.24.5 Variablesand Errors of the Serial
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8.24.5.2 Message Examples with Basic
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8.24.5.3ParametersRelatedtotheSerial
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8.24.5.4ErrorsRelated to the Serial
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8.24.6TimeforRead/Write of Messages
8.24.7Physical Connection RS-232andRS-485
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8.25.1IntroductiontoModbus-RTUProtocol
8.25.1.1Transmission Modes
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8.25.1.2Message StructureinRTU Mode
8.25.2Operation oftheCFW-08inthe
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8.25.2.1RS-232 and RS-485 Interface
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8.25.2.2 InverterConfigurationinthe
8.25.2.3AccesstotheInverterData
8.25.3Detailed Function Description
8.25.3.1Function 01 - Read Coils
8.25.3.2Function 03-Read Holding Register
8.25.3.3Function 05 - WriteSingle Coil
8.25.3.4Function 06-Write SingleRegister
8.25.3.5Function 15 -Write Multiple Coils
8.25.3.6Function 16 - WriteMultipleRegisters
8.25.3.7Function 43 - Read Device
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8.25.4Modbus-RTUCommunicationErrors
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9.1.1 200-240 V Power Supply
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9.1.2 380-480 V Power Supply
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9.2Electronics/GeneralData
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9.3WEG Standard IV-PoleMotorData
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2098CFW-08 - QUICK PARAMETER REFERENCE
I.Parameters
QUICK PARAMETER REFERENCE, FAULT AND STATUS MESSAGES
FrequencyProportionalValue
CFW-08 - QUICK PARAMETER REFERENCE
The factory default of parameter P136 depends on the inverter model as follows:
- models 1.6-2.6-4.0-7.0 A/200-240 V and 1.0-1.6-2.6-4.0 A/380-480 V: P136 = 5.0 %;
- models 7.3-10-16 A/200-240 V and 2.7-4.3-6.5-10 A/380-480 V: P136 = 2.0 %;
- models 22-28-33 A/200-240 V and 13-16-24-30 A/380-480 V: P136 = 1.0 %.
(AutomaticIxR Compensation)
DC Link Voltage Regulation
1 = Quadratic V/F Control
SpecialFunction Selection
5 = Loads Factory Default
Frequencyto Enable the Sleep 0.00 to P134
Time Delayto Activate the
CFW-08 - QUICK PARAMETER REFERENCE
Only available on the control board A2 (refer to item 2.4). For programming instructions, please, refer to the parameter P235 detailed
Analog Input AI1 Function
0 = (0 to 10) V/(0 to 20) mA /
CFW-08 - QUICK PARAMETER REFERENCE
Analog Input AI2 Function
0 = (0 to 10) V/(0 to 20) mA/
0 = Output Frequency (Fs)
6 = Process Variable (PID)
0 = (0 to 10) V/(0 to 20) mA
Digital Input DI1Function
0 = No Function or General
Digital Input DI2Function
Digital InputDI3 Function
Only available on the control board A2 (refer to item 2.4). For programming instructions, please, refer to the parameter P235 detailed
CFW-08 - QUICK PARAMETER REFERENCE
13 = Flying Start Disable
15 = Manual/Automatic (PID)
Digital InputDI4 Function
11,12, 14 and 15 = Not Used
13 = Flying Start Disable
13 = Disables Flying Start
13 = Disables Flying Start
CFW-08 - QUICK PARAMETER REFERENCE
(*) It is not possible to set P297 = 7 (15 kHz) in vector control mode(P202 = 2) or when the external serial keypad (HMI-CFW08-RS) is used.
DC Braking StartFrequency
Serial Communication Interface I
Flying Start and Ride-Through
FlyingStartandRide-Through
CFW-08 - QUICK PARAMETER REFERENCE
Serial Communication Interface II
0.0= Disables the function
MOTORPARAMETERS- P399 to P499
CFW-08 - QUICK PARAMETER REFERENCE
Notesfound on the Quick ParameterReference:
This parameter is only displayedin vector mode (P202 = 2).
This parameter is only displayed in scalar mode P202 = 0 or 1.
Thisparametercanbechangedonlywhen the inverter is disabled (stopped motor).
Thisparameteris onlyavailable withHMI-CFW08-RS.
Theanaloginputvalueisrepresentedbyzerowhenitis notconnectedtoan externalsignal.
In order to use an analog input as a digital input with NPN logic (P235 or P239 = 3), it is
necessary to connect a 10 k
resistor from terminal 7 to 6 (AI1) or 8 (AI2) of the control
Thisparameteris only available in the CFW-08Plusversion.
Theparameter value changesautomaticallywhenP203 = 1.
SPECIAL FUNCTION - P500 to P599
Setpoint (Via Keypad) of the
Automatic Setting of P525
CFW-08 - QUICK PARAMETER REFERENCE
Outputovercurrent/short-circuit
Overtemperatureat the powerheatsink
Outputoverload (Ixt function)
Programmemoryerror (Checksum)
Keypadcopy function error
elf-tuningroutine (estimation of the motor
Serialcommunication error
Serialinterface Watchdog timeout error
Keypadconnectionfault(HMI-CFW08-RS)
Motorovertemperature(externalPTC)
II.FaultMessages
III.OtherMessages
Inverteris readyto be enabled
Powersupply voltage is too lowfor the inverter
Inverterisrunningself-tuningroutine
Keypadcopy function in progress (only available in
theHMI-CFW08-RS) -inverter to keypad
Keypadcopy function in progress (only available in
theHMI-CFW08-RS) -keypadtoinverter
Inverterin the sleep rdymode
SAFETYNOTICES
This Manual contains necessary information for the correct
useof the CFW-08frequencyinverter.
This Manual was developed for qualified personnel with
suitabletrainingandtechnicalqualificationtooperatethistype
Thefollowingsafetynotices are usedinthismanual:
Ifthe recommendedsafetynoticesare notstrictlyobserved,it
canleadtoseriousorfatalinjuriesofpersonneland/ormaterial
Failureto observe the recommended safety procedures can
This notice provides important information for the proper
understandingandoperationof the equipment.
Thefollowingsymbolsmaybeattachedtotheproduct,serving
Componentssensitive to electrostaticdischarge.Donot
touch them without proper grounding procedures.
Mandatory connection to ground protection (PE).
Shield connection to ground.
Only qualified personnel should plan or implement the
installation, start- up, operation and maintenance of this
equipment. Personnel must review entire Manual before
attemptingto install, operateortroubleshootthe CFW-08.
Thesepersonnel must follow all safety instructions included
inthismanualand/or definedbylocal regulations.
Failure to comply with these instructions may result in
personnelinjuryand/orequipmentdamage.
CHAPTER 1 - SAFETY NOTICES
Inthis manual,qualified personnelare definedas peoplethatare
Install,ground, powerupandoperatethe CFW-08according
tothis manual andthe local required safetyprocedures;
Useofsafetyequipment according to the local regulations;
Theinvertercontrol circuit (ECC3, DSP) and the HMI-CFW08-P
arehighvoltagecircuitsand are notgrounded.
Always disconnect the supply voltage before touching any
electricalcomponentinsidethe inverter.
Many components are charged with high voltage and/or in
movement (fans), even after the incomingAC power supply has
beendisconnectedor switchedOFF. Waitatleast10 minutesfor
thetotal discharge of the power capacitors.
Alwaysconnecttheframeof the equipmentto theground(PE)at
thesuitable connectionpoint.
All electronic boards have components that are sensitive to
electrostatic discharges. Never touch any of the electrical
components or connectors without following proper grounding
procedures. If necessary to do so, touch the properly grounded
metallicframe or use a suitable ground strap.
Inverterscan interferewithotherelectronicequipment.Inorderto
reduce this interference, adopt the measures recommended in
chapter3-InstallationandConnection.
ReadthisentiremanualbeforeinstallingoroperatingtheCFW-08.
Do not apply high voltage(high pot)test on theinverter!
If this test is necessary, contact WEG.
Thischapterdefines thecontentsand purposesof thismanu-
al and describes the main characteristics of the
frequency inverter. Identification, receiving inspections and
storagerequirementsare also provided.
Thismanualis divided into 9 chapters,providinginformation
to the user on how receive, install, start-up and operate the
Generalinformationandreceivingthe CFW-08.
RFIfilters,mechanical and electrical installation
(powerand controlcircuit).
Using the keypad (Human Machine Interface -
Start-upandstepsto follow.
Setup and read only parameters detailed
Solving problems, cleaning instructions and
CFW-08 optional devices description, technical
characteristicsand installation.
CFW-08ratings,tablesandtechnicalinformation.
This manual provides information for the correct use of the
CFW-08. This frequency inverter is very flexible and allows
the operation in many different modes as described in this
AstheCFW-08canbeappliedin severalways,itisimpossible
todescribehere all oftheapplicationpossibilities.WEGdoes
not accept any responsibility when the CFW-08 is not used
Nopartofthismanualmaybereproducedinanyform,without
thewrittenpermissionofWEG.
It is important to note the software version installed in the
CFW-08, since it definesthefunctionsand the programming
parameters of the inverter.
This manual refers to the software version indicated on the
insidecover.Forexample,theversion3.0Xappliestoversions
3.00 to 3.09, where “X” is a variable that will change due to
minor software revisions. The operation of the CFW-08 with
these software revisions are still covered by this version of
Thesoftwareversion can be read in theparameterP023.
GENERALINFORMATION
CHAPTER 2 - GENERAL INFORMATION
ABOUTTHECFW-08
TheCFW-08frequencyinverterprovidestwocontroloptions:
vector control (VVC: voltage vector control) or V/F (scalar);
bothtypesof control can be setaccordingtotheapplication.
Inthevectorcontrolmode,themotorperformanceisoptimized
relatingto torque and speed regulation.
The"Self-Tuning"function,availableinvectorcontrol,permits
the automatic setting of the inverter parameter from the
identification(alsoautomatic)of the parametersof the motor
connectedatthe inverteroutput.
The V/F (scalar) mode is recommended for simpler
applicationssuchas pumpandfandrives.In thesecasesone
can reduce the motor and inverter losses by using the
"QuadraticV/F" option, thatresultsinenergysaving.
TheV/Fmodeisalsousedwhenmorethanonemotorshould
be driven simultaneously by one inverter (multimotor
For power ratings and furthertechnical information, refer to
The block diagram below gives a general overview of the
CHAPTER 2 - GENERAL INFORMATION
- Block diagram for the models:
1.6-2.6-4.0-7.0A/200-240V and 1.0-1.6-2.6-4.0A/380-480V
CHAPTER 2 - GENERAL INFORMATION
- Block diagram for the models:
7.3-10-16-22 A/200-240Vand 2.7-4.3-6.5-10-13-16A/380-480V
models 16 A and 22 A/200-240 V are not fitted with optional RFI filter.
POWER SUPPLIESAND CONTROL
CHAPTER 2 - GENERAL INFORMATION
- Block diagram for the models:
28-33A/200-240 V and24-30 A/380-480 V
models 28 A and 33 A/200-240 V are not fitted with optional RFI filter.
CHAPTER 2 - GENERAL INFORMATION
- Description and location of the nameplates on the CFW-08
CFW-08IDENTIFICATION
Lateral Label of the CFW-08
Frontal Nameplate of the CFW-08 (under the keypad)
CFW-08Model (IntelligentCode)
CHAPTER 2 - GENERAL INFORMATION
(Plus Version)A2=control2(Plus Version
HOW TO SPECIFY THE CFW-08MODEL:
Theoption field (S or O)defines if theCFW-08 is a standard version or if it will be equippedwith anyoptional devices.Ifthe
standardversion is required, the specificationcodeendshere.
ThemodelnumberhasalwaystheletterZ at the end. For example:
CFW080040S2024ESZ=standard4.0ACFW-08inverter,single-phase at (200 to 240) V input,withmanual in English.
IftheCFW-08 is equipped with anyoptionaldevices, you must fill out all fields in the correct sequence up tothelastoptional
device,the model numberiscompletedwiththe letter Z.
Thus,for instance if the product above isrequired withNema 1 degree of protection:
FW-08inverter,4.0A,single-phase,200-240V input,withmanualin Englishlanguage
and with kit for Nema1 degree of protection.
(*)-The versionsA3 and A4 of the control board shall be used only with the KFB-CO-CFW08 and with the KFB-DN-CFW08, respectively (refer to item 8.14 and 8.15). The parallel keypad, the
serial remote keypad, the parallel remote keypad, and the serial protocol (Modbus and WEG) cannot be used with these versions of the control board.
For these models, contact WEG.
CHAPTER 2 - GENERAL INFORMATION
Fortheeffectofthiscode,thestandardproduct is conceived
-CFW-08 with standard control board.
28 A and 33 A/ 200-400 V and also 13 A,16 A, 24 A
and 30 A/380-480 V, IP20 for the other models.
CFW-08 Plus - A1 is composed of the inverter and the
controlboard1. Example: CFW080040S2024PO
A1Z.CFW-08 Plus - A2 is composed of the inverter and the
control board 2. Example: CFW080040S2024PO
A2Z.Thesemodelsarefactorysetforbipolaranaloginputs(-10V
Thisconfigurationislostwhenthefactorydefaultparameters
areloaded (P204 = 5). Refer to the detailed descriptionof
parametersP204 andP235forfurtherinformation.
CFW-08 Plus - A3 is composed of the inverter, the KFB-
CO-CFW08kitandtheCANopencommunicationprotocol.
Example:CFW-080040S2024PO
A3Z.CFW-08 Plus - A4 is composed of the inverter, the KFB-
DN-CFW08kitandtheDeviceNetcommunicationprotocol.
A4Z.CFW-08 Multipump -A5 is composed of the inverter and
thecontrolboard5,usedformultipumpsystemapplications.
7.0A, 16.0 A, 22 A, 28 A and 33 A /200-240 V and for all
380-480 V models are just available with three-phase
A Category C2 RFI filter (optional)can be installedinside
the inverter in models 7.3 A and 10 A/200-240 V (single-
phase) and 2.7A, 4.3 A, 6.5 A, 10 A, 13 A, 16A, 24 A and
30A/380-480 V.Models 1.6A, 2.6A and 4.0A/200-240 V
(single-phase)and 1.0A, 1.6A, 2.6Aand4.0A/380-480V
can be providedmounted on a footprint CategoryC2 RFI
Thelistingoftheexistingmodels(voltage/current)isshown
CHAPTER 2 - GENERAL INFORMATION
The CFW-08is supplied in cardboard boxes.
Theoutsideofthepackingboxhasa nameplatethatisidentical
Please check if the CFW-08is the one you ordered.
CFW-08nameplatedatamatcheswithyourpurchaseorder.
Theequipmenthas not been damaged duringtransport.
Ifanyproblem isdetected,contactthe carrier immediately.
If the CFW-08 is not installed immediately,store it in a clean
anddryroom(storage temperatures between -25 °C [-13 °F]
and 60 °C [140 ºF]). Cover it to protect against dust, dirt or
When theinverterisstoredfor alongtime,it is recommended
to power the inverter up for 1 hour every year. Make sure to
use a power supply with the following characteristics for all
models (200-240 V or 380-480 V): 220 V, single-phase or
three-phase,50 Hz or 60 Hz, withoutconnectingthemotorto
thedriveoutput.Afterpoweringupthe drive,keepitoff for 24
INSTALLATION ANDCONNECTION
Thischapterdescribestheproceduresforthe electricaland
mechanicalinstallationoftheCFW-08.Theseguidelines
andsuggestionsmust be followed for proper CFW-08
The location of the inverterinstallation is an important factor
to assure good performance and long useful life for its
components. For proper installation, we make the following
Avoid direct exposure to sunlight, rain, high moisture and
Avoidexposuretoexplosiveorcorrosivegasesandliquids;
Avoid exposure to excessive vibration, dust, oil or any
conductiveparticles in the air.
Temperature: 0 ºC to 40 ºC (32 ºF to 104 ºF ) - nominal
conditions.From40ºCto50 ºC (32ºF to122ºF)-with2%
currentderatingfor each 1 ºC (1.8 ºF) degreeabove40 ºC
Relativeairhumidity:5 % to 90 %-non-condensing.
Maximumaltitude: 1000m (3,300ft) -nominalconditions.
From 1000 m to 4000 m (3,300 to 13123.3 ft) - with 1 %
currentreduction for each 100 m (328 ft) above 1000 m
From2000m (6561.6ft) to 4000 m (13123.3ft)- avoltage
reduction of 1.1 % every 100 m (328 ft) above 2000 m
Pollution degree: 2 (according to EN50178 and UL508C)
The figure 3.1 and the table 3.1, provides external mounting
specifications,and externalfixingholesof theCFW-08.
Environment
- CFW-08 mounting specifications
- CFW-08 mounting specifications
1MIN.A PÓSADESENERGIZAÇÃO.
-LEIA OMANUALDE INSTRUÇÕES.
-READ THEINSTRUCTIONSMA NUAL.
-ONLYREMOVE TERMINALCOVER