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Variable Frequency Drive Basics
Learn the basics of what is a Variable Frequency Drive. What
applications they are used for and how they work.
Variable speed drive technology offers a
cost-effective method to match driver speed to load demands
and represents a state-of-the-art opportunity to reduce
operating costs and improve overall productivity.
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AC Variable
Frequency Drives
The
AC Variable Frequency Drive market had becomes huge in the
last decade. Due to the great
advances in electronics and high power microprocessors the
demands for highly reliable AC power has grown.The main
power components of an AC drive, have to be able to supply
the required level of current and voltage in a form the
motor can use. The controls have to be able to provide the
user with necessary adjustments such as minimum and maximum
speed settings, so that the drive can be adapted to the
user's process.
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Variable Frequency Drive Motors
Solid state electronic AC motor drives are
becoming increasingly more commonplace within industrial and
commercial facilities. They control air handlers, chillers,
pumps, conveyors, machine tools, mixers, draw lines, and
numerous other applications once considered either strictly
DC applications, or constant speed.
This site offers you the knowledge and technology of
Variable Frequency Drive Motors.
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WEG Variable Frequency Drives
WEG offers a wide varieties of Variable Frequency Drive and
the most advanced technological. Today WEG has become one of
the largest electric motors manufacturer . WEG has
state-of-the-art manufacturing processes plus the company
philosophy which is based on work and discipline and the
most demanding total quality programs. Back my each
employees committed to ultimate customer satisfaction.
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Baldor Variable Frequency Drives
Offering
quality Variable Frequency drives including AC
inverters and vector controls, DC SCR controls, servos and
positioning products. For optimal performance, They matched
motor and control packages to suit the customer's needs .At
Baldor, they provide advanced, high quality products
for diverse industrial applications.
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Soft Start Drives
A
soft starter is another form of reduced voltage starter for
A.C. induction motors.
The soft starter is similar to a primary resistance or
primary reactance starter in that it is in series with the
supply to the motor. (Three wire or standard connection) The
current into the starter equals the current out.
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Call Variable Frequency Drive Co. for all your Soft Starter at
(510) 490-2187
We'll
ship your order to
you ASAP.
Variable Frequency Drive Co. We are dedicated to
providing our customers and website visitors with quality
information about our products and services. We also want to be your
educational site so you can make a well informed decisions about
your Variable Frequency Drive.
In addition we will make every effort to provide information
that you can use on a daily basis. If there is specific information
regarding variable frequency drives, AC variable frequency drives
and variable frequency drive motors you are looking for and did not
find here, contact us and we will get the answer for you.

We at Variable Frequency Drive Co.
are dedicated to
providing you the highest quality products and service. With our
experience staff and engineers we are commitment to provide you with
the best .
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WEG CFW-09 Model Variable
Frequency Drives

The WEG CFW-09 Series offers the most advanced
technology in drives for three phase AC induction motors. With the Vectrue
Technology, allowing the WEG Variable Frequency Drive's to combine V/F,
Sensorless Vector and Closed Loop Vector (with encoder) to control
techniques all in one product. An innovation applications to simplify
braking torque which is a new feature named "Optimal Braking". This new
feature allows the elimination of dynamic braking resistor in some
application meaning a simpler, more compact and economic solution.
Applications
- Pumps
- Fans / Blowers
- Conveyors
- Compressors
- Agitators and Mixers
- Extruders
- Grizzly Feeders
- Centrifuges
- Cranes and Hoists
- Rollout Tables
- Presses
- Saws
Features
- V/Hz or Sensorless Vector Control via
parameter selection
- Self Tuning to motor parameters
- NEMA 1 Enclosure up to 200HP
- IP20 “Finger Safe” Enclosure from 250 to
500HP
- 200-240V or 380-480V input voltage
- Single or Three-phase input voltage up
to 3HP/230V
- 150% current overload capacity
- DC bus connections accessible
- Detachable smart keypad with dual
display and copy function
- 32 bit RISC microprocessor controlled
PWM output
- 1.25 / 2.5 / 5 / 10 kHz adjustable
switching frequency
- Six isolated programmable digital inputs
- Three programmable relay outputs (250Vac
/ 1A)
- Two isolated programmable analog inputs
- Two programmable analog outputs
Protective features:
- Overcurrent
- motor overload
- drive overtemperature
- output phase-to-phase and
phase-to-ground short circuit
- DC bus over and under voltage
- power supply under voltage and phase
loss and external fault
Control features:
- Linear and "S" ramp acceleration and
deceleration
- local/remote control
- DC braking
- torque boost
- motor slip compensation
- electronic pot
- preset speeds
- adjustable V/Hz profile
- maximum and minimum adjustable motor
speed limits
- three skip frequencies
- adjustable output current limit
- JOG, ride-thru, flying start and PID
regulator
Display readings:
- Motor speed
- frequency, voltage, current and
torque
- output power (kW)
- last four faults
- drive status
- digital and analog I/O status
- hours powered and hours running
Ambient:
104ºF (40ºC), 3300 ft (1000m)
altitude, 90% humidity, non- condensing
Optional Features
- Closed loop vector control
- Remote keypad with Copy
Function
- RS-232 or RS-485 Serial
Interface
- On/Off line PC programming
with Superdrive
- Fieldbus Comm: Profibus DP,
DeviceNet or Modbus RTU
- Encoder buffered output
- Additional digital and
analog I/O
Ordering Information
and Accessories:
CFW09-NEMA1 Enclosure 230V
Input Power Supply: Single or
Three-Phase
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Motor HP |
Drive AMPS |
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| Catalog
Number |
CT* |
VT* |
CT* |
VT* |
Braking
Transistor |
Dimensions
H x W x D |
App. Shpg.
wt. |
Mult.
Sym. |
|
CFW-090006TDZ |
1 or 1.5 2
3 |
6
7
10 |
Yes |
8.3 x 5.6 x
7.7 |
9 |
V1 |
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CFW-090007TDZ |
Yes |
8.3 x 5.6 x
7.7 |
9 |
V1 |
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CFW-090010TDZ |
Yes |
8.3 x 5.6 x
7.7 |
9 |
V1 |
Input Power Supply: Three-Phase-230V
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Motor HP |
Drive AMPS |
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| Catalog
Number |
CT* |
VT* |
CT* |
VT* |
Braking
Transistor |
Dimensions
H x W x D |
App. Shpg.
wt. |
Mult.
Sym. |
|
CFW-090013TDZ |
3
5
7.5
10
15 |
13
16
24
28
45 |
Yes |
8.3 x 5.6 x
7.7 |
9 |
V1 |
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CFW-090016TDZ |
Yes |
11.4 x 7.2
x 7.7 |
15 |
V1 |
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CFW-090024TDZ |
Yes |
11.4 x 7.2
x 7.7 |
15 |
V1 |
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CFW-090028TDZ |
Yes |
11.4 x 7.2
x 7.7 |
15 |
V1 |
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CFW-090045TDZ |
Yes |
15.3 x 8.9
x 10.8 |
46 |
V1 |
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CFW-090054TDZ |
20 |
25 |
54 |
68 |
Use
CFW-090XXXTDDBZ
Below |
18.7 x 9.8
x 10.8 |
55 |
V1 |
|
CFW-090070TDZ |
25 |
30 |
70 |
86 |
Use
CFW-090XXXTDDBZ
Below |
21.6 x 13.2
x 10.8 |
101 |
V1 |
|
CFW-090086TDZ |
30 |
40 |
86 |
105 |
Use
CFW-090XXXTDDBZ
Below |
21.6 x 13.2
x 10.8 |
101 |
V1 |
|
CFW-090105TDZ |
40 |
50 |
105 |
130 |
Use
CFW-090XXXTDDBZ
Below |
26.6 x13.2
x 11.8 |
135 |
V1 |
|
CFW-090130TDZ |
50 |
50 |
130 |
150 |
Use
CFW-090XXXTDDBZ
Below |
26.6 x13.2
x 11.8 |
135 |
V1 |
|
CFW-090142TDZ |
50 |
60 |
142 |
174 |
Use
CFW-090XXXTDDBZ
Below (1) |
32.9 x13.2
x 11.8 |
172 |
V1 |
|
CFW-090054TDDBZ |
20 |
25 |
54 |
68 |
Yes |
18.7 x 9.8
x 10.8 |
55 |
V1 |
|
CFW-090070TDDBZ |
25 |
30 |
70 |
86 |
Yes |
21.6 x 13.2
x 10.8 |
101 |
V1 |
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CFW-090086TDDBZ |
30 |
40 |
86 |
105 |
Yes |
21.6 x 13.2
x 10.8 |
101 |
V1 |
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CFW-090105TDDBZ |
40 |
50 |
105 |
130 |
Yes |
26.6 x13.2
x 11.8 |
135 |
V1 |
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CFW-090130TDDBZ |
50 |
50 |
130 |
150 |
Yes |
26.6 x13.2
x 11.8 |
135 |
V1 |
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CFW-090142TDDBZ |
50 |
60 |
142 |
174 |
Yes (1) |
32.9 x13.2
x 11.8 |
172 |
V1 |
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CFW-090180TDZ |
60 |
60 |
180 |
180 |
External**
(1) |
38.4 x 16.1
x 14.6 |
243 |
V1 |
|
CFW-090240TDZ |
75 |
75 |
240 |
240 |
External**
(1) |
38.4 x 16.1
x 14.6 |
243 |
V1 |
Input Power Supply: Three-Phase-460V
Input Power Supply: Three-Phase -575V
*CT = Constant Torque, *VT = Variable Torque
** See Options and Accessories
(1) Non-Stocked item
Note : 1) "HP" rating based on Table 430-150NEC Always compare motor
FLA to nominal Amps of drive
2) The 6,7, and 10A/230V
models can be single-phase powered without output current derating
3) Above 200HP enclosure
is IP20 "finger safe"
Input Power Supply: Three Phase-575 to
690V
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Motor HP |
Drive AMPS |
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Catalog Number |
CT* |
VT* |
CT* |
VT* |
Braking
Transistor |
Dimensions
H x W x D |
App. Shpg.
wt. |
Mult.
Sym. |
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CFW-090107THZ |
100 |
150 |
107 |
147 |
External** |
45.1 x 16.1 x 14.6 |
279 |
V1 |
|
CFW-090147THZ |
15 |
200 |
147 |
196 |
External** |
45.1 x 16.1 x 14.6 |
279 |
V1 |
|
CFW-090211THZ |
200 |
200 |
211 |
211 |
External** |
45.1 x 16.1 x 14.6 |
279 |
V1 |
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CFW-090247THZ |
250 |
300 |
247 |
315 |
External** |
46.7 x 27.6 x 22.9 |
751 |
V1 |
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CFW-090315THZ |
300 |
350 |
315 |
343 |
External** |
46.7 x 27.6 x 22.9 |
751 |
V1 |
|
CFW-090343THZ |
350 |
400 |
343 |
418 |
External** |
46.7 x 27.6 x 22.9 |
751 |
V1 |
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CFW-090418THZ |
400 |
500 |
418 |
472 |
External** |
46.7 x 27.6 x 22.9 |
751 |
V1 |
|
CFW-090472THZ |
500 |
600 |
472 |
555 |
External** |
46.7 x 27.6 x 22.9 |
751 |
V1 |
*CT = Constant Torque, *VT = Variable Torque
** See Options and Accessories
(1) Non-Stocked item
Note : 1) "HP" rating based on Table 430-150NEC Always compare motor
FLA to nominal Amps of drive
2) Above 200HP enclosure
is IP20 "finger Safe
3) All 575V drives are
non-stocked items, consult Variable Frequency Drive Co.
CFW09-DB Resistors 10% Duty Cycle
230V
For Use With CFW-09 Plus
Model Number |
Catalog Number |
Motor
HP |
OHMS |
WATTS |
Dimensions
H x W x D |
Mult.
Sym. |
| CFW-090006TDZ |
CFDB39-224* |
1.5 |
39 |
224 |
12 x 5
x 4 |
V1 |
| CFW-090007TDZ |
CFDB27-298* |
2 |
27 |
298 |
12 x 5
x 4 |
V1 |
| CFW-090010TDZ |
CFDB27-298* |
3 |
27 |
298 |
12 x 5
x 4 |
V1 |
| CFW-090013TDZ |
CFDB22-373 |
3 |
22 |
373 |
12 x 5
x 4 |
V1 |
| CFW-090016TDZ |
CFDB22-373* |
5 |
22 |
373 |
12 x 5
x 4 |
V1 |
| CFW-090024TDZ |
CFDB15-560 |
7.5 |
15 |
560 |
12 x 5
x 4 |
V1 |
| CFW-090028TDZ |
CFDB10-746 |
10 |
10 |
746 |
12 x 7
x 5
|
V1 |
| CFW-090045TDZ |
CFDB8.6-1119 |
15 |
8.6 |
1119 |
12 x 10
x 5 |
V1 |
|
CFW-090054TDDBZ |
CFDB4.7-1492 |
20 |
4.7 |
1492 |
12 x 16
x 5 |
V1 |
|
CFW-090070TDDBZ |
CFDB3.3-1865 |
25 |
3.3. |
1865 |
19 x 10
x 5 |
V1 |
|
CFW-090086TDDBZ |
CFDB3.3-2238 |
30 |
3.3 |
2238 |
19 x 13
x 5 |
V1 |
|
CFW-090105TDDBZ |
CFDB2.2-3730 |
40 |
2.2 |
3730 |
26.5 x
10 x 5 |
V1 |
|
CFW-090130TDDBZ |
CFDB2.2-3730 |
50 |
2.2 |
3730 |
26.5 x
10 x 5 |
V1 |
460V
For Use With CFW-09 Plus
Model Number |
Catalog Number |
Motor
HP |
OHMS |
WATTS |
Dimensions
H x W x D |
Mult.
Sym. |
| CFW-090003TGZ |
CFDB120-298* |
1.5 |
120 |
298 |
12 x 5
x 4 |
V1 |
| CFW-090004TGZ |
CFDB120-298* |
2 |
120 |
298 |
12 x 5
x 4 |
V1 |
| CFW-090005TGZ |
CFDB100-224* |
3 |
100 |
224 |
12 x 5
x 4 |
V1 |
| CFW-090009TGZ |
CFDB47-746* |
5 |
47 |
746 |
12 x 7
x 5 |
V1 |
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