WEG CFW300 User manual

Frequency Inverter
Convertidor de Frecuencia
Inversor de Frequência
CFW300
Motors | Automation | Energy | Transmission & Distribution | Coatings
User's Manual
Manual del Usuario
Manual do Usuário

User’s Manual
Series: CFW300
Language: English
Document Nº: 10003325037 / 00
Models: Frame Sizes A and B
Publishing Date: 11/2015

Summary of Reviews
English
The information below describes the revisions made to this manual.
Version Review Description
-- R00 First edition
ATTENTION!
Check the frequency of the power supply.
In case the power supply frequency is different from the factory setting (check
P403), it is necessary to set:
P204 = 5 for 60 Hz.
P204 = 6 for 50 Hz.
It is only necessary to set these parameters once.
Refer to the programming manual of the CFW300 for further details about the
programming of parameter P204.

Contents
English
1 SAFETY INSTRUCTIONS....................................................................1
1.1 SAFETY WARNINGS IN THE MANUAL....................................................1
1.2 SAFETY WARNINGS IN THE PRODUCT .................................................1
1.3 PRELIMINARY RECOMMENDATIONS....................................................2
2 GENERAL INFORMATION ..................................................................3
2.1 ABOUT THE MANUAL ..............................................................................3
2.2 ABOUT THE CFW300................................................................................3
2.3 TERMINOLOGY .........................................................................................6
2.4 IDENTIFICATION LABEL .........................................................................7
2.5 RECEIVING AND STORAGE.....................................................................8
3 INSTALLATION AND CONNECTION..................................................9
3.1 MECHANICAL INSTALLATION.................................................................9
3.1.1 Environmental Conditions ..............................................................9
3.1.2 Positioning and Mounting...............................................................9
3.1.2.1 Cabinet Mounting ................................................................9
3.1.2.2 Surface Mounting .............................................................10
3.1.2.3 DIN-Rail Mounting.............................................................10
3.2 ELECTRICAL INSTALLATION ................................................................10
3.2.1 Identification of the Power Terminals and Grounding Points .10
3.2.2 Circuit Breakers, Fuses, Grounding and Power .......................11
3.2.3 Power Connections.......................................................................12
3.2.3.1 Input Connections.............................................................14
3.2.3.2 Power Supply Reactance ................................................14
3.2.3.3 Dynamic Braking...............................................................15
3.2.3.4 Output Connections .........................................................16
3.2.4 Grounding Connections ...............................................................17
3.2.5 Control Connections ....................................................................17
3.2.6 Cable Separation Distance..........................................................18
3.3 INSTALLATIONS ACCORDING TO EUROPEAN DIRECTIVE OF
ELECTROMAGNETIC COMPATIBILITY .....................................................18
3.3.1 Control Connections.....................................................................19
3.3.2 Emission and Immunity Levels....................................................19
3.3.3 Characteristics of the RFI Filter .................................................20
4 KEYPAD (HMI) AND BASIC PROGRAMMING ................................21
4.1 USE OF THE KEYPAD TO OPERATE THE INVERTER .........................21
4.2 INDICATIONS ON THE HMI DISPLAY ...................................................21
4.3 OPERATING MODES OF THE HMI ........................................................21
5 FIRST TIME POWER-UP AND START-UP.......................................23
5.1 START-UP PREPARATION......................................................................23
5.2 START-UP ................................................................................................23
5.2.1 Basic Application...........................................................................24
5.2.2 V/f Type of Control (P202 = 0) ......................................................25
5.2.3 Control Type VVW (P202 = 5).......................................................26

Contents
English
6 TROUBLESHOOTING AND MAINTENANCE...................................27
6.1 FAULTS AND ALARMS............................................................................27
6.2 SOLUTION FOR THE MOST FREQUENT PROBLEMS ........................27
6.3 INFORMATION NECESSARY FOR CONTACTING TECHNICAL
SUPPORT .......................................................................................................27
6.4 PREVENTIVE MAINTENANCE................................................................28
6.5 CLEANING INSTRUCTIONS ..................................................................29
7 ACCESSORIES ..................................................................................30
8 TECHNICAL SPECIFICATIONS ........................................................31
8.1 POWER DATA...........................................................................................31
8.2 ELECTRONICS/GENERAL DATA ...........................................................32
8.2.1 Considered Standards..................................................................33
APPENDIX A - FIGURES.................................................................... 110
APPENDIX B - TECHNICAL SPECIFICATIONS................................ 113

CFW300 | 1
English
Safety Instructions
1 SAFETY INSTRUCTIONS
This manual provides information for the proper installation and operation of the CFW300
frequency inverter.
It has been written to be used by qualified personnel with suitable training or technical
qualification for operating this type of equipment. The personnel shall follow all the safety
instructions described in this manual and/or defined by the local regulations. Failure to comply
with the safety instructions may result in death, serious injury, and equipment damage.
1.1 SAFETY WARNINGS IN THE MANUAL
The following safety notices are used in the manual:
DANGER!
The procedures recommended in this warning have the purpose of protecting the
user against death, serious injuries and considerable material damage.
ATTENTION!
The procedures recommended in this warning have the purpose of avoiding
material damage.
NOTE!
The information mentioned in this warning is important for the proper
understanding and good operation of the product.
1.2 SAFETY WARNINGS IN THE PRODUCT
The following symbols are attached to the product, serving as safety notices:
High voltages are present.
Components sensitive to electrostatic discharge.
Do not touch them.
Mandatory connection to the protective ground (PE).
Connection of the shield to the ground.

2 | CFW300
English
Safety Instructions
1.3 PRELIMINARY RECOMMENDATIONS
DANGER!
Always disconnect the main power supply before touching any electrical
component associated to the inverter. Several components can remain charged
with high voltages or remain in movement (fans) even after the AC power is
disconnected or switched off.
Wait at least ten minutes after turning off the input power for the complete
discharge of the power capacitors.
Always connect the grounding point of the inverter to the protection earth (PE).
DANGER!
The XC10 connector does is not USB compatible, therefore, it cannot be
connected to USB ports.
This connector only serves as the interface between the CFW300 frequency
inverter and its accessories.
NOTES!
Frequency Inverter may interfere with other electronic equipment. In order to
reduce these effects, take the precautions recommended in the Chapter 3
INSTALLATION AND CONNECTION on page 9.
Read the user's manual completely before installing or operating the inverter.
Do not perform any withstand voltage test!
If necessary, contact the manufacturer.
ATTENTION!
Electronic boards have components sensitive to electrostatic discharges.
Do not touch directly on components or connectors.
If necessary, first touch the grounding point of the inverter, which must be
connected to the protection earth (PE) or use a proper grounding strap.

CFW300 | 3
English
General Information
2 GENERAL INFORMATION
2.1 ABOUT THE MANUAL
This manual contains information for the proper installation and operation of the inverter,
commissioning, main technical features and how to identify the most usual problems of the
different models of inverters of the CFW300 line.
ATTENTION!
The operation of this equipment requires detailed installation and operation
instructions provided in the quick installation guide, user's manual, programming
manual and communication manuals. The guides are provided in print with their
respective accessory, or can be obtained at WEG website - www.weg.net. A
printed copy of the files can be requested at your local WEG dealer.
NOTE!
It is not the intention of this manual to present all the possibilities for the application
of the CFW300, as well as WEG cannot take any liability for the use of the CFW300
which is not based on this manual.
Part of the figures and tables are available in the annexes, which are divided into APPENDIX
A - FIGURES on page 110 for figures and APPENDIX B - TECHNICAL SPECIFICATIONS on
page 113 for technical specifications.
For further information, refer to the programming manual.
2.2 ABOUT THE CFW300
The CFW300 frequency inverter is a high-performance product which allows speed and torque
control of three-phase induction motors. This product provides the user with the options of
vector (VVW) or scalar (V/f) control, both programmable according to the application.
In the vector mode (VV W), the operation is optimized for the motor in use, obtaining a better
performance in terms of speed regulation.
The scalar mode (V/f) is recommended for simpler applications, such as the activation of most
pumps and fans. In such cases it is possible to reduce the losses in the motor and the inverter
using the "V/f Quadratic", which results in energy savings. The V/f mode is used when more
than a motor is activated by an inverter simultaneously (multimotor applications).
The frequency inverter CFW300 also has functions of PLC (Programmable Logic Controller)
by means of the SoftPLC (integrated) feature. For further details regarding the programming of
those functions, refer to the SoftPLC user's manual of the CFW300.
The main components of the CFW300 can be viewed in the blocks diagrams of Figure 2.1 on
page 4, for frame size A 220 V, Figure 2.2 on page 5 for frame size A 110 V and Figure
2.3 on page 6 for frame size B 220 V.

4 | CFW300
English
General Information
Digital inputs
(DI1 to DI4)
Sources for electronics and interfaces between
power and control
Power
Single-phase /
three-phase
rectifier
Preload
Motor
3~
U/T1
V/T2
W/T3
Inverter
with IGBT
transistors
Power
supply
R/L1/L (-UD)
T/L3
RS-485
DC Link
capacitor
bank
HMI Control
board
with
CPU
16 bits
Flash Memory
Module
Interfaces (RS-232,
RS-485, USB,
CANopen, DeviceNet,
Profibus DP or
Bluetooth)
Analog
output
(AO1)
HMI (remote)
PE PE
Digital
output
DO1
(RL1)
Software
WPS
Control
PC
Analog input
(AI1)
S/L2/N (+UD)
Rsh
Filter RFI
1
1
25
3
3
3
3
4
4
4
4
1DC power supply connection available for specific models only
2Three-phase power supply connection available for specific models only
3Available as accessory
4Number of Inputs/Outputs depends on the I/O expansion accessory used
5Available as accessory only in models single-phase
Figure 2.1: Block diagram of CFW300 for frame size A 220 V

CFW300 | 5
English
General Information
Digital inputs
(DI1 to DI4)
Sources for electronics and interfaces
between power and control
Power
Single-phase /
three-phase rectifier
Preload
Motor
3~
U/T1
V/T2
W/T3
Inverter
with IGBT
transistors
L1/L
RS-485
DC Link
capacitor
bank
HMI Control
board
with
CPU
16 bits
Interfaces (RS-232,
RS-485, USB,
CANopen, DeviceNet,
Profibus DP or
Bluetooth)
Analog
output
(AO1)
HMI (remote)
PE PE
Digital
output
DO1
(RL1)
Software
WPS
Control
Analog input
(AI1)
L2/N
Rsh
1
1
1
Flash Memory
Module 1
2
2
2
2
PC
Filter
RFI
1
Power
supply
1Available as accessory
2Number of Inputs/Outputs depends on the I/O expansion accessory used
Figure 2.2: Block diagram of CFW300 for frame size A 110 V

6 | CFW300
English
General Information
Braking
IGBT
Digital inputs
(DI1 to DI4)
Sources for electronics and interfaces between
power and control
Power
Three-phase
rectifier
Preload
Motor
3~
U/T1
V/T2
W/T3
Inverter
with IGBT
transistors
Power
supply
R/L1/L
T/L3
RS-485
DC Link
capacitor
bank
HMI Control
board
with
CPU
16 bits
Flash Memory
Module
Interfaces (RS-232,
RS-485, USB,
CANopen, DeviceNet,
Profibus DP or
Bluetooth)
Analog
output
(AO1)
HMI (remote)
PE PE
Digital
output
DO1
(RL1)
Software
WPS
Control
Analog input
(AI1)
S/L2/N
Rsh
+UD -UD +BR BR
Filter RFI
5
114 4
2
2
2
2
3
3
3
3
PC
1DC power supply connection
2Available as accessory
3Number of Inputs/Outputs depends on the I/O expansion accessory used
4Braking resistor connection
5Available as accessory only in models single-phase
Figure 2.3: Block diagram of CFW300 for frame size B 220 V
2.3 TERMINOLOGY
Table 2 .1: Terminology of the CFW300 inverters
Product
and Series
Model Identification
Brake Degree of
Protection
Hardware
Version
Software
Version
Frame
Size
Rated
Current
Phase
Number
Rated
Voltage
E.g.: CFW300 A01P6 S 2 NB 20 --- ---
Available options
CFW300 Refer to Table 2.2 on page 7 Blank =
standard
NB = without braking reostática Sx = special
software
DB = with braking reostática Blank = standard
20 = IP20 Hx = special hardware

CFW300 | 7
English
General Information
Table 2.2: Available options for each field of the nomenclature according to the rated current and voltage of the inverter
Frame Size Output Rated
Current N° of Phases Rated Voltage Brake
A
01P6 = 1.6 A
S = single-phase power supply
1 = 110...127 Vac
NB
02P6 = 2.6 A
04P2 = 4.2 A
06P0 = 6.0 A
01P6 = 1.6 A
2 = 200...240 Vac
02P6 = 2.6 A
04P2 = 4.2 A
06P0 = 6.0 A
07P3 = 7.3 A
01P6 = 1.6 A
T = three-phase power supply
02P6 = 2.6 A
04P2 = 4.2 A
06P0 = 6.0 A
07P3 = 7.3 A
01P6 = 1.6 A
D = DC power supply 3 = 280...340 Vdc
02P6 = 2.6 A
04P2 = 4.2 A
06P0 = 6.0 A
07P3 = 7.3 A
B
10P0 = 10.0 A B = single-phase or three-phase power supply or DC 2 = 200...240 Vac or
280...340 Vdc DB
15P2 = 15.2 A T = three-phase power supply or DC
2.4 IDENTIFICATION LABEL
The identification label is located on the side of the inverter. For further details on positioning
the label, refer to Figure A2 on page 110.
Manufacturing date
(14 corresponds to the
week and I to the year)
Rated output data
(voltage, current
and frequency)
WEG stock item
Production order
Rated input data
(voltage, current and
frequency)
Serial number
Model (Inverter
intelligent code)
CFW300 Side Label
Figure 2.4: Description of the CFW300 identification label

8 | CFW300
English
General Information
2.5 RECEIVING AND STORAGE
The CFW300 is supplied packed in a cardboard box. There is an identification label affixed to
the outside of the package, identical to the one affixed to the side of the inverter.
Verify whether:
The CFW300 identification label corresponds to the purchased model.
Any damage occurred during transportation.
Report any damage immediately to the carrier.
If the CFW300 is not installed soon, store it in a clean and dry location (temperature between
-25 ºC and 60 ºC (-13 ºF and 140 ºF)), with a cover to prevent dust accumulation inside it.
ATTENTION!
When the inverter is stored for a long period, it becomes necessary to perform
the capacitor reforming. Refer to the procedure recommended in Section 6.4
PREVENTIVE MAINTENANCE on page 28 of this manual.

CFW300 | 9
English
Installation and Connection
3 INSTALLATION AND CONNECTION
3.1 MECHANICAL INSTALLATION
3.1.1 Environmental Conditions
Avoid:
Direct exposure to sunlight, rain, high humidity or sea-air.
Inflammable or corrosive gases or liquids.
Excessive vibration.
Dust, metallic particles or oil mist.
Environment conditions permitted for the operation of the inverter:
Temperature surrounding the inverter: 0 ºC to 50 ºC ( 32 ºF to 122 ºF) - IP20.
For temperatures surrounding the inverter higher than the specifications above, it is necessary
to apply a 2 % of current derating for each degree Celsius, limited to an increase of 10 ºC (50 ºF).
Air relative humidity: 5 % to 95 % non-condensing.
Maximum altitude: up to 1000 m (3.300 ft) - rated conditions.
From 1000 m to 4000 m (3.300 ft to 13.200 ft) - 1 % of current derating for each 100 m
above 1000 m of altitude.
Pollution degree: 2 (according to EN50178 and UL508C), with non-conductive pollution.
Condensation must not originate conduction through the accumulated residues.
3.1.2 Positioning and Mounting
The external dimensions and fixing holes, and the inverter net weight (mass) are shown in
Figure B1 on page 116.
Mount the inverter in the upright position on a flat and vertical surface. Allow the minimum
clearances indicated in Figure B2 on page 117, in order to allow the circulation of the cooling
air. Do not install heat sensitive components right above the inverter.
ATTENTION!
When installing two or more inverters vertically, respect the minimum clearance
A + B (as shown in Figure B2 on page 117) and provide an air deflecting plate
so that the heat rising up from the lower inverter does not affect the top inverter.
Provide independent conduits for the physical separation of signal, control and
power cables (refer to Section 3.2 ELECTRICAL INSTALLATION on page 10).
3.1.2.1 Cabinet Mounting
For inverters installed inside cabinets or metallic boxes, provide proper exhaustion, so that the
temperature remains within the allowed range. Refer to the dissipated powers in Table B2 on page 114.

10 | CFW300
English
Installation and Connection
As a reference, Table 3.1 on page 10 shows the air flow of rated ventilation for each model.
Cooling Method: internal fan with air flow upwards.
Table 3 .1: Air flow of the internal fan
Model CFM I/s m3/min
A17. 0 8.02 0.48
B
3.1.2.2 Surface Mounting
Figure B2 on page 117 illustrates the CFW300 installation procedure for surface mounting.
3.1.2.3 DIN-Rail Mounting
The CFW300 inverter can also be mounted directly on a 35 mm-rail, in accordance with
DIN EM 50.022. For further details, refer to Figure B2 on page 117.
3.2 ELECTRICAL INSTALLATION
DANGER!
The following information is merely a guide for proper installation. Comply with
applicable local regulations for electrical installations.
Make sure the AC power supply is disconnected before starting the installation.
The CFW300 must not be used as an emergency stop device. Provide other
devices for that purpose.
3.2.1 Identification of the Power Terminals and Grounding Points
The power terminals can be of different sizes and configurations, depending on the model of
the inverter, according to Figure B3 on page 118. The location of the power, grounding and
control connections are shown in Figure B3 on page 118.
Description of the power terminals:
L/L1, N/L2, L3 (R,S,T): power supply connection.
U, V and W: connection for the motor.
-UD: negative pole of the DC power supply.
+UD: positive pole of the DC power supply.
+BR, BR: connection of the braking resistor (available for frame size B models).
PE: grounding connection.
The maximum tightening torque of the power terminals and grounding points must be checked
in Figure B3 on page 118.

CFW300 | 11
English
Installation and Connection
DANGER!
Observe the correct DC power supply connection, polarity and terminal positions.
3.2.2 Circuit Breakers, Fuses, Grounding and Power
ATTENTION!
Use proper cable lugs for the power and grounding connection cables. Refer
to Table B1 on page 113 for recommended wiring, circuit breakers and fuses.
Keep sensitive equipment and wiring at a minimum distance of 0.25 m (9.85 in)
from the inverter and from the cables connecting the inverter to the motor.
ATTENTION!
Residual differential interrupter (DR):
When used in the inverter supply, it must have a pick-up current of 300 mA.
Depending on the installation conditions, such as motor cable length and type,
multi-motor drive, etc., the DR interrupter may trip. Check with the manufacturer
the most suitable type for operation with inverters.
NOTE!
The wire gauges listed in Table B1 on page 113 are guiding values. Installation
conditions and the maximum permitted voltage drop must be considered for
the proper wiring sizing.

12 | CFW300
English
Installation and Connection
3.2.3 Power Connections
PE
UPE
Shielding
PE
+UD-UD Disconnecting
switch
Fuses
Power
supply
PEW V U
V W
Negative pole of the DC power supply (-UD)
Positive pole of the DC power supply (+UD)
Only available for the specific models of frame A (see Table 2.2 on page 7).
(a) Frame size A DC power supply
Shielding
PE
Disconnecting
switch
Fuses
Power
supply
PEW V U
U V WPE
PE L1 L2L3
L1/L
L2/N
L3*
(*) The power terminal L3 is not available in models of frame size A single-phase
(b) Frame size A single-phase and three-phase power supply

CFW300 | 13
English
Installation and Connection
Shielding
PE
PE L2L1 Disconnecting
switch
Fuses
Power
supply
PEW V U
U V WPE +BR BR
L3 +UD-UD
Negative pole of the DC power supply (-UD)
Positive pole of the DC power supply (+UD)
(c) Frame size B DC power supply
Shielding
PE
PE L2L1 Disconnecting
switch
Fuses
Power
supply
PEW V U
L1/L
L2/N
U V WPE BR+BR
L3-UD +UD L3
Only available for the 10-A model (see Table 2.2 on page 7).
(d) Frame size B single-phase and three-phase power supply
Figure 3.1: (a) to (d) Power and grounding connections

14 | CFW300
English
Installation and Connection
3.2.3.1 Input Connections
DANGER!
Provide a disconnect device for the inverter power supply. This device must cut
off the power supply whenever necessary (during maintenance for instance).
ATTENTION!
The power supply that feeds the inverter must have a grounded neutral.
NOTE!
The input power supply voltage must be compatible with the inverter rated
voltage.
Power factor correction capacitors are not needed at the input (L/L1, N/L2,
L3) and must not be installed at the output (U, V, W).
Power supply capacity
Suitable for use in circuits capable of delivering not more than 30.000 Arms symmetrical at (127
/ 240 V).
In case the CFW300 is installed in power supplies with current capacity over 30.000 Arms,
it is necessary to use proper protection circuits for those power supplies, such as fuses or
circuit breakers.
3.2.3.2 Power Supply Reactance
In a general way, the inverters of the CFW300 line can be installed directly in the power supply,
without reactance in the supply. However, check the following:
In order to prevent damages to the inverter and assure the expected useful life, you must
have a minimum impedance that provides a line voltage drop of 1 %. If the line impedance
(due to the transformers and cabling) is below the values listed in this table, we recommend
the use of a line reactance.
For the calculation of the line reactance necessary to obtain the desired percentage voltage
drop, use:
L = 1592 . ΔV . Ve[ μH]
Is, rat . f
Seeing that:
ΔV - desired line drop, in percentage (%).
Ve- phase voltage in the inverter input, in volts (V).
Is, rat - rated current of the inverter output.
f - line frequency.

CFW300 | 15
English
Installation and Connection
3.2.3.3 Dynamic Braking
NOTE!
The dynamic braking is available from frame size B.
Refer to Table B1 on page 113 for the following specifications of the dynamic braking: maximum
current, resistance, effective current (*) and cable gauge.
Input power
supply
Thermostat Brake
resistor
Relay
Command
power supply
Contactor R
S
T
BR+BR
Figure 3.2: Installation of brake resistor
(*) The effective braking current can be calculated as follows:
Ieffective = Imax . tbr (min)
√ 5
Seeing that: tbr corresponds to the sum of the braking actuation times during the most severe
cycle of five minutes.
The power of the brake resistor must be calculated considering the deceleration time, the inertia
of the load and of the resistive torque.
Procedure to use the dynamic braking:
Connect the brake resistor between the power terminals +BR and BR.
Use a twisted cable for the connection. Separate these cables from the signal and control
wiring.
Dimension the cables according to the application, observing the maximum and effective
currents.