Inverter Drive CFW-08 Instructions for use

Easy Start Guide
This guide is intended to compliment the user manual provided by the manufacturer.
It is provided as a basic introduction to the product for Inverter Drive Supermarket customers.
It should not be used as a replacement for the manual issued by the manufacturer.
Issue 2
20140223
This product is not a safety device. All safety considerations including but not
limited to Emergency Stop provision should be assessed separately and are
outside the scope of this guide.
WEG
CFW-08 Frequency Inverter
available from WEG.InverterDrive.com
123456789101112
VECTOR INVERTER

Easy Start Guide
Page 1
This guide has been produced by The Inverter Drive Supermarket Ltd.
All content, including but not limited to graphics, text and procedures copyright The Inverter
Drive Supermarket and must not be reproduced or altered without prior written permission.
©
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Page 15
Contents
Power and Motor Connections (Single Phase)
Power and Motor Connections (Three Phase)
Motor Connections - Star and Delta
Parameters - Overview
Parameters to set before use
How to Operate the Inverter from the keypad
How to switch from Local (keypad) control to
Remote (terminal) control and back
How to enable Sensorless Vector Mode
How to connect and configure a Potentiometer
for remote speed control
How to connect and configure a Run Forward or
Run Reverse switch
Brake Resistor Connection
How to Reset the Inverter to Factory Defaults
How to set a Parameter value
How to connect and configure a Run/Stop switch
with Forward/Reverse selection
How to configure “3-Wire” control with Run/Stop
pushbuttons and Forward/Reverse selection
Contents
WEG CFW-08 Series Inverter

123456789101112
VECTOR INVERTER
Easy Start Guide
1. Power and Motor Connections (Single Phase)
Page 2
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All content, including but not limited to graphics, text and procedures copyright The Inverter
Drive Supermarket and must not be reproduced or altered without prior written permission.
©
Notes:
The illustration above is based on the frame
size 2 rating (1.5kW). The terminal layout for
other sizes and the “Wash” model is similar.
The order of the three phases determines the
direction the motor turns.
Important:
Use screened SY cable between the Inverter
and Motor to minimise electromagnetic
interference.
Ensure the motor cable screen is earthed at
the motor end.
Before commencing, confirm that the Inverter and
all cables are completely isolated from the power
supply, have been isolated for at least 5 minutes
and that the motor is not turning.
WEG CFW-08 Series Inverter
MotorPower
Phase
Phase
Phase
Earth
Live
Neutral
Earth
L/L1 N/L2 L3 U V W

Easy Start Guide
2. Power and Motor Connections (Three Phase)
Page 3
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All content, including but not limited to graphics, text and procedures copyright The Inverter
Drive Supermarket and must not be reproduced or altered without prior written permission.
©
Notes:
The illustration above is based on the frame
size 2 rating (1.5kW). The terminal layout for
other sizes and the “Wash” model is similar.
The order of the three motor phases
determines the direction the motor turns.
The order of the three power phases is
unimportant.
Important:
Use screened SY cable between the Inverter
and Motor to minimise electromagnetic
interference.
Ensure the motor cable screen is earthed at
the motor end.
Before commencing, confirm that the Inverter and
all cables are completely isolated from the power
supply, have been isolated for at least 5 minutes
and that the motor is not turning.
WEG CFW-08 Series Inverter
123456789101112
VECTOR INVERTER
Power
Phase
Phase
Phase
Earth
Motor
Phase
Phase
Earth
Phase
L/L1 N/L2 L3 U V W

Easy Start Guide
3. Motor Connections - Star and Delta
Page 4
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All content, including but not limited to graphics, text and procedures copyright The Inverter
Drive Supermarket and must not be reproduced or altered without prior written permission.
©
3.2 Motor connected in DELTA:
The Delta link configuration is shown in the
illustration opposite and is sometimes referred
to as “three-a-breast”.
The order of the three phases determines the
direction the motor turns.
Note that the cable screen and earth are
connected together at the earth terminal.
Phase
Phase
Phase
Earth
Screen
3.1 Motor connected in STAR (or Wye):
For safety purposes, Star (shown opposite) is
the default configuration for new motors and is
sometimes known as “two at one side”.
Only two links are required for Star. Double-up
the links if changing from Delta to allow the
motor to be changed back in future.
The order of the three phases determines the
direction the motor turns.
Note that the cable screen and earth are
connected together at the earth terminal.
Phase
Phase
Phase
Earth
Screen
Dual voltage induction motors typically include
terminal boxes with six points. The points can
be connected together with links in one of two
ways to suit one of the two rated voltages.
The two ways of connecting the links are
shown below. These are known as “Star” (the
higher voltage) or “Delta” (the lower voltage).
Link
The selection of Star or Delta is not optional
and must match the supply voltage.
Dual voltage motor nameplates include
symbols to represent voltage and full load
current in each configuration.
Delta is represented by a triangle and star by
an inverted Y (Wye).
DELTA
STAR
Link
WEG CFW-08 Series Inverter

Easy Start Guide
Page 5
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All content, including but not limited to graphics, text and procedures copyright The Inverter
Drive Supermarket and must not be reproduced or altered without prior written permission.
©
4. Parameters - overview
Parameter
Description
How to set
P000
Parameter Access
Set to to allow parameters to be changed5
P100
Acceleration Time (seconds)
Default is Increase or decrease if required.5.0
P101
Deceleration Time (seconds)
Default is Increase or decrease if required.10.0
P133
Minimum Frequency (Hz)
Default is 3.00. Set to for most applications.5.00
P134
Maximum Frequency (Hz)
Default is 55.00 or 66.00. Set to for most applications.50.00
P202
Control Mode
Default is (linear). Can be set to 1 (quadratic) if the motor is driving a Fan or Pump.0
P399
Rated Motor Efficiency
Set to match motor if known - eg. %)71.00 (
P400
Rated Motor Voltage
Set to match motor nameplate - eg. 230
P401
Rated Motor Current
Set to match motor nameplate - eg. (Amps)3.34
P402
Rated Motor Speed
Set to match motor nameplate - eg. (rpm, look for min -1)1430
P403
Rated Motor Frequency
Set to match motor nameplate - eg. (Hz)50.00
P404
Rated Motor Power
Refer to P404 table in manual and set to match motor nameplate - eg. (for 1.5 kW)6
P407
Rated Motor Power Factor
Set to match motor if known - eg. look for cos )0.74 ( φ
The Inverter contains a number of settings
which can be changed to tailor it for use with a
wide range of motor ratings and applications.
These settings are known as parameters.
Parameters are typically referred to by code or
number (eg. P401 = Rated Motor Current) with
a description available in the manual.
The parameters contain critical information
essential to the correct operation of the
Inverter. Therefore, they should at least be
checked by the installer before the Inverter is
operated for the first time.
The parameters listed in section 5 are intended
to provide a starting point to allow for basic
operation of the CFW-08 Inverter.
5. Parameters to set before use
See section 6 to learn how to set a parameter value.
Set the following parameters to allow the
CFW-08 to control a motor with Run, Stop and
Speed Control from the keypad.
If any of the parameters have been changed
previously, follow the procedure in section 15
to reset the Inverter to Factory Defaults.
5.1 Parameters to check and values to set
WEG CFW-08 Series Inverter
Note: Although some parameters are only used in Sensorless Vector Mode (see Section 9), we recommend that all the above are set.

Easy Start Guide
6. How to set a Parameter value
Page 6
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Drive Supermarket and must not be reproduced or altered without prior written permission.
©
6.1 Find the Parameter List.
This example demonstrates the steps required to set parameter
P401 which is Rated Motor Current.
With the motor stopped, press the “PROG” button to access the
parameter list. The display will show the letter “P” followed by a
three digit number. Typically, this is P000 as shown in the illustration
opposite.
6.2 Find the Parameter to change
Use the up and down keys to find the required parameter. In this
example, P401.
Press the “PROG” key to select the parameter value.
6.3 Set the Parameter Value
Use the up and down keys to set the parameter value as required.
In this example, the motor nameplate shows a rated current of
6.47A so the value is set accordingly.
Note: If you are unable to change the value, ensure that parameter
P000 is set to 5. Some parameters may be read-only so cannot be
changed even when P000 is set to 5.
6.4 Finished.
Press “PROG” to save changes. The display will return to the
current parameter.
WEG CFW-08 Series Inverter

Easy Start Guide
7. How to operate the Inverter from the keypad
Page 7
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All content, including but not limited to graphics, text and procedures copyright The Inverter
Drive Supermarket and must not be reproduced or altered without prior written permission.
©
7.1 Ensure the Inverter is in “Local” control mode.
Press the “Loc/Rem” button repeatedly until the green indicator lamp
next to the “Loc/Rem” button is illuminated.
See section 8 for further information on Local and Remote modes.
7.2 Set Parameter P121 to the required speed
Set parameter P121 (Keypad Reference) to the desired speed. In this
example, 25.00Hz is half the rated speed for a standard 50Hz
Induction Motor. Leave the display showing the speed in Hz.
See section 6 to learn how to set a parameter value.
7.3 Start the motor and change direction
Press the green button to start the motor. The motor will accelerate to
the required speed in the time specified by parameter P100. Use the
up and down keys to change the speed as required.
Pressing the direction button (see illustration opposite) will first
decelerate the motor to zero speed before accelerating up to the
current speed in the opposite direction. Parameters P100 and P101
control the acceleration and deceleration time in seconds. The lamps
on the left indicate direction; green = forward, red = reverse.
WEG CFW-08 Series Inverter
7.4 Stop the motor
Press the red button to stop the motor. The motor will decelerate to a
stop in the time specified by parameter P101.
Once stopped, the display will show “rdy” (ready).

Page 8
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All content, including but not limited to graphics, text and procedures copyright The Inverter
Drive Supermarket and must not be reproduced or altered without prior written permission.
©
Easy Start Guide
8. How to switch from Local (keypad) control to
Remote (terminal) control and back
WEG CFW-08 Series Inverter
8.1 Local (keypad) control
When the green indicator lamp next to the “Loc/Rem” button is
illuminated, the Inverter is in “Local” mode.
When in “Local” mode, the motor can be controlled using the
integrated keypad. The defaults are:-
Start/Stop, Speed Up/Down, Forward/Reverse rotation, Jog
8.2 Remote (terminal) control
When the red indicator lamp next to the “Loc/Rem” button is
illuminated, the Inverter is in “Remote” mode.
When in “Remote” mode, the motor can be controlled using the
terminal block.
8.3 Toggle between Local and Remote control
Press the “Loc/Rem” button again to toggle from Local to Remote or
from Remote to Local.

9. How to enable Sensorless Vector Mode
Page 9
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All content, including but not limited to graphics, text and procedures copyright The Inverter
Drive Supermarket and must not be reproduced or altered without prior written permission.
©
The standard operating mode of the CFW-08
Inverter is VxF. This is the simplest form of
operation and controls Volts and Frequency to
vary the speed of a standard Induction Motor.
The CFW-08 can also operate in Sensorless
Vector mode. This can improve motor
performance without requiring a separate
feedback device.
In order to improve performance, Sensorless
Vector builds a “model” of the motor it is
controlling. This is achieved by a “tuning” run
during which the Inverter operates for approx.
2 minutes to gather the necessary motor data.
Note: Sensorless Vector is not suitable
where the motor rating is significantly
lower than the Inverter rating or where
more than one motor is being controlled.
Invoking a “tuning” run in these cases will
not be successful and return an E14 error.
Parameter
Description
How to set
P000
Parameter Access
Set to to allow parameters to be changed5
P202
Control Mode
Default is 0 (linear). Set to to enable Sensorless Vector Control.2
P408
Run Self-Tuning
Default is 0. Ensure motor is off-load before changing to to begin self-tuning.1
The display will flash “auto” whilst
the CFW-08 performs it’s tuning run.
Easy Start Guide
WEG CFW-08 Series Inverter
9.1 Parameters to check and values to set