Weq 6 A User manual

User's Guide Frequency Inverter
Guía del Usuario Convertidor de Frecuencia
Manual do Usuário Inversor de Freqüência

02/2008
Series: CFW-11
Language: English
Document: 10000063093 / 02
Models: 6...105 A / 200...240 V
3,6...88 A / 380...480 V
FREQUENCY
INVERTER
MANUAL

2
Revision Description Chapter
1 First Edition -
2 General Revision -
Summary of Revisions

Index
CHAPTER 1
Safety Instructions
1.1 Safety Warnings in the Manual.....................................................................................................1-1
1.2 Safety Warnings in the Product.....................................................................................................1-1
1.3 Preliminary Recommendations ....................................................................................................1-2
CHAPTER 2
General Instructions
2.1 About the Manual ......................................................................................................................2-1
2.2 Terms and Definitions..................................................................................................................2-1
2.3 About the CFW-11 .....................................................................................................................2-4
2.4 Identification Labels for the CFW-11.............................................................................................2-7
2.5 Receiving and Storage ................................................................................................................2-9
CHAPTER 3
Installation and Connection
3.1 Mechanical Installation ...............................................................................................................3-1
3.1.1 Installation Environment.....................................................................................................3-1
3.1.2 Mounting Considerations...................................................................................................3-1
3.1.3 Cabinet Mounting ............................................................................................................3-4
3.1.4 Access to the Control and Power Terminal Strips...................................................................3-5
3.2 Electrical Installation ...................................................................................................................3-7
3.2.1 Identification of the Power and Grounding Terminals ............................................................3-7
3.2.2 Power / Grounding Wiring and Fuses..................................................................................3-8
3.2.3 Power Connections..........................................................................................................3-12
3.2.3.1 Input Connections ..............................................................................................3-12
3.2.3.1.1 IT Networks ........................................................................................3-12
3.2.3.2 Dynamic Braking................................................................................................3-14
3.2.3.2.1 Sizing the Braking Resistor....................................................................3-14
3.2.3.2.2 Installation of the Braking Resistor.........................................................3-16
3.2.3.3 Output Connections ...........................................................................................3-17
3.2.4 Grounding Connections ..................................................................................................3-19
3.2.5 Control Connections .......................................................................................................3-20
3.2.6 Typical Control Connections.............................................................................................3-24
3.3 Installation According to the European Directive of Electromagnetic Compatibility .........................3-27
3.3.1 Conformal Installation .....................................................................................................3-27
3.3.2 Standard Definitions ........................................................................................................3-28
3.3.3 Emission and Immunity Levels...........................................................................................3-29

Index
CHAPTER 4
KEYPAD AND DISPLAY
4.1 Integral Keypad - HMI-CFW11 ....................................................................................................4-1
4.2 Parameters Organization.............................................................................................................4-4
CHAPTER 5
First Time Power-Up and Start-Up
5.1 Prepare for Start-Up....................................................................................................................5-1
5.2 Start-Up.....................................................................................................................................5-2
5.2.1 Password Setting in P0000 .................................................................................................5-2
5.2.2 Oriented Start-up ..............................................................................................................5-3
5.2.3 Setting Basic Application Parameters ...................................................................................5-5
5.3 Setting Date and Time.................................................................................................................5-8
5.4 Blocking Parameters Modification ................................................................................................5-8
5.5 How to Connect a PC .................................................................................................................5-9
5.6 FLASH Memory Module ..............................................................................................................5-9
CHAPTER 6
Troubleshooting and Maintenance
6.1 Operation of the Faults and Alarms..............................................................................................6-1
6.2 Faults, Alarms, and Possible Causes .............................................................................................6-2
6.3 Solutions for the Most Frequent Problems......................................................................................6-6
6.4 Information for Contacting Technical Support................................................................................6-7
6.5 Preventive Maintenance...............................................................................................................6-7
6.5.1 Cleaning Instructions .........................................................................................................6-9
CHAPTER 7
Option Kits and Accessories
7.1 Option Kits ................................................................................................................................7-1
7.1.1 RFI Filter...........................................................................................................................7-1
7.1.2 Safety Stop According to EN 954-1 Category 3 (Pending Certification) ..................................7-1
7.1.3 24 Vdc External Control Power Supply.................................................................................7-3
7.2 Accessories ................................................................................................................................7-4
CHAPTER 8
Technical Specifications
8.1 Power Data ................................................................................................................................8-1
8.2 Electrical / General Specifications................................................................................................8-6
8.2.1 Codes and Standards ........................................................................................................8-7
8.3 Mechanical Data........................................................................................................................8-8
8.4 Conduit Kit ..............................................................................................................................8-12

Safety Instructions
1-1
1
SAFETY INSTRUCTIONS
This manual provides information for the proper installation and
operation of the CFW-11 frequency inverter.
Only trained and qualified personnel should attempt to install,
start-up, and troubleshoot this type of equipment.
1.1 SAFETY WARNINGS IN THE MANUAL
The following safety warnings are used in this manual:
DANGER!
Failure to follow the recommended procedures listed in this warning may result in death, serious
injury, and equipment damage.
ATTENTION!
Failure to follow the recommended procedures listed in this warning may result in equipment
damage.
NOTE!
This warning provides important information for the proper understanding and operation of the
equipment.
1.2 SAFETY WARNINGS IN THE PRODUCT
The following symbols are attached to the product and require special attention:
Indicates a high voltage warning.
Electrostatic discharge sensitive components.
Do not touch them.
Indicates that a ground (PE) must be connected securely.
Indicates that the cable shield must be grounded.
Indicates a hot surface warning.

Safety Instructions
1-2
1
1.3 PRELIMINARY RECOMMENDATIONS
DANGER!
Only trained personnel, with proper qualifications, and familiar with the CFW-11 and associated
machinery shall plan and implent the installation, starting, operation, and maintenance of this
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.
NOTE!
For the purpose of this manual, qualified personnel are those trained and able to:
1. Install, ground, power-up, and operate the CFW-11 according to this manual and to the current
legal safety procedures;
2. Use the protection equipment according to the established regulations;
3. Provide first aid.
DANGER!
Always disconnect the main power supply before touching any electrical device associated with the
inverter.
Several components may remain charged with high voltage and/or in movement (fans), even after
the AC power supply has been disconnected or turned off.
Wait at least 10 minutes to guarantee the fully discharge of capacitors.
Always connect the equipment frame to the ground protection (PE).
ATTENTION!
The electronic boards contain components sensitive to electrostatic discharges. Do not touch the
components and terminals directly. If needed, touch first the grounded metal frame or wear an
adequate ground strap.
NOTE!
Frequency inverters may cause interference in other electronic devices. Follow the recommendations
listed in Chapter 3 – Installation and Connection, to minimize these effects.
NOTE!
Fully read this manual before installing or operating the inverter.
Do not perform a withstand voltage test on any part of the inverter!
If needed, please, consult WEG.

General Instructions
2-1
2
GENERAL INSTRUCTIONS
2.1 ABOUT THE MANUAL
The purpose of this manual is to provide you with the basic
information needed to install, start-up in the V/f control mode
(scalar), and troubleshoot the most common problems of the
CFW-11 frequency inverter series.
It is also possible to operate the CFW-11 in the following control modes: V V W, Sensorless Vector and Vector with
Encoder. For further details on the inverter operation with other control modes, refer to the Software Manual.
For information on other functions, accessories, and communication, please refer to the following manuals:
Software Manual, with a detailed description of the parameters and advanced functions of the CFW-11.
Incremental Encoder Interface Module Manual.
I/O Expansion Module Manual.
RS-232/RS-485 Serial Communication Manual.
CANopen Slave Communication Manual.
Anybus-CC Communication Manual.
These manuals are included on the CD supplied with the inverter or can be downloaded from the WEG website
at - www.weg.net.
2.2 TERMS AND DEFINITIONS
Normal Duty Cycle (ND): Inverter duty cycle that defines the maximum continuous operation current (IRAT-ND) and
the overload current (110 % for 1 minute). The ND cycle is selected by setting P0298 (Application) = 0 (Normal
Duty (ND)). This duty cycle shall be used for the operation of motors that are not subjected to high torque loads
(with respect to the motor rated torque) during its operation, starting, acceleration, or deceleration.
IRAT-ND:Inverter rated current for use with the normal duty (ND) cycle.
Overload: 1.1 x IRAT-ND/ 1 minute.
Heavy Duty Cycle (HD): Inverter duty cycle that defines the maximum continuous operation current (IRAT-HD)
and the overload current (150 % for 1 minute). The HD cycle is selected by setting P0298 (Application) = 1
(Heavy Duty (HD)). This duty cycle shall be used for the operation of motors that are subjected to high torque
(with respect to the motor rated torque) during its operation, starting, acceleration, or deceleration.
IRAT-HD:Inverter rated current for use with the heavy duty (HD) cycle.
Overload: 1.5 x IRAT-HD / 1 minute.
Rectifier: Input circuit of inverters that transforms the AC input voltage in DC voltage. It is composed of power
diodes.
Pre-charge Circuit: Charges the DC bus capacitors with limited current, which avoids higher peak currents
at the inverter power-up.

General Instructions
2-2
2
DC Bus: Inverter intermediate circuit; DC voltage obtained from the rectification of the AC input voltage or
from an external power supply; feeds the output inverter bridge with IGBTs.
Power modules U, V, and W: Set of two IGBTs of the inverter output phases U, V, and W.
IGBT: Insulated Gate Bipolar Transistor; basic component of the output inverter bridge. The IGBT works as an
electronic switch in the saturated (closed switch) and cut-off (open switch) modes.
Braking IGBT: Works as a switch to activate the braking resistors. It is controlled by the DC bus voltage
level.
PTC: Resistor which resistance value in ohms increases proportionally to the temperature increase; used as a
temperature sensor in electrical motors.
NTC: Resistor which resistance value in ohms decreases proportionally to the temperature increase; used as a
temperature sensor in power modules.
Keypad: Device that allows controlling the motor, and viewing/editing inverter parameters. It is composed of
motor control keys, navigation keys, and a graphic LCD display.
FLASH memory: Non-volatile memory that can be electronically written and erased.
RAM memory: Random Access Memory (volatile).
USB: Universal Serial Bus; is a serial bus standard that allows devices to be connected using the ”Plug and
Play” concept.
PE: Protective Earth.
RFI Filter: Radio-Frequency Interference Filter for interference reduction in the Radio-Frequency range.
PWM: Pulse Width Modulation; pulsed voltage that feeds the motor.
Switching frequency: Frequency of the IGBTs switching in the inverter bridge, normally expressed in kHz.
General enable: When activated, this function accelerates the motor via acceleration ramp set in the inverter.
When deactivated, this function immediately blocks the PWM pulses. The general enable function may be
controlled through a digital input set to this function or via serial communication.
Start/Stop: When enabled in the inverter (start), this function accelerates the motor via acceleration ramp up
to the speed reference. When disabled (stop), this function decelerates the motor via deceleration ramp up to
the complete motor stop; at this point, the PWM pulses are blocked. The start/stop function may be controlled
through a digital input set for this function or via serial communication. The operator keys and of the
keypad work in a similar way:
=Start, =Stop.
Heatsink: Metal device designed to dissipate the heat generated by the power semiconductors.

General Instructions
2-3
2
Amp, A: Ampères.
°C: celsius degree.
AC: Alternated Current.
DC: Direct Current.
CFM: Cubic Feet per Minute; unit of flow.
hp: Horse Power = 746 Watts (unit of power, used to indicate the mechanical power of electrical motors).
Hz: hertz.
l/s: liters per second.
kg: kilogram = 1000 grams.
kHz: kilohertz = 1000 Hertz.
mA: miliampère = 0.001 Ampère.
min: minute.
ms: millisecond = 0.001 seconds.
Nm: newton meter; unit of torque.
rms: "Root mean square"; effective value.
rpm: revolutions per minute; unit of speed.
s: second.
V: volts.
: ohms.