Gingoog Electric Trading (G.E.T.) ™

June 3, 2009

FC-301 and FC-302 accessories

Filed under: GET FC-300 series — Ralf @ 2:01 AM


Dynamic braking

The VLT Automation Drive FC-300 series can be ordered with a built in dynamic brake option utilizing the latest IGBT (Insulated Gate Bipolar Transistor) technology to provide fast deceleration of the connected motor. The dynamic brake option is a configurable option built into the VLT Automation Drive without the need of extra mounting space.

Brake resistor(s) can be used in conjunction with the dynamic brake to dissipate the heat/power regenerated by the motor during deceleration or overhauling load. Danfoss provides a large selection of different brake resistor types suitable for your application. Brake resistors must be ordered separately and field installed by the customer.

Advanced harmonic filters

VLT harmonic filters AHF 010/005

AHF-010 reduces the harmonic current to less than 10% while the AHF-005 lowers this current to less than 5%.

Both Danfoss AHF-005 and AHF-010 are advanced harmonic filters and should not be compared with traditional harmonic trap filters. They have been specially designed to match the Danfoss Frequency Drives.

Disconnect switch available

Mounting the optional disconnect switch on the front of B, C, D or E enclosures eliminates the need for a space consuming external switch box.

Sine-wave filters

When the load of a motor is controlled by a Drive, resonance noise from the motor can occur. This is due to the design of the motor and the switching of the IGBT’s (Insulated Gate Bipolar Transistors). That resonance frequency will correspond to the switching frequency of the Drive.

In applications where this noise is undesirable, Danfoss offers Sine-wave filters for the VLT Automation Drive to dampen these acoustics.

These filters are installed electrically between the VLT Automation Drive and motor to reduce voltage rise time (dU/dt), peak voltage (V max) and the ripple current to the motor, thus reducing the noise generated. Sine-wave filters must be ordered separately and field installed by the customer.

dU/dt filters

dU/dt filters reduce the dU/dt values on the motor terminal phase to phase voltage, an issue that is important for short motor cables.

The phase to phase voltage is still pulse shaped. dU/dt filters prolong the lifetime of the motor.

Closure for this post:

In earlier blog entries we did include already quite a variety of downloadable links to brochures, catalogues, manuals, overviews, presentations, videos, etc, etc, etc but here we decided to leave the sheets more clean in order not to spoil the message.

However, we would still highly recommend to read as well our

GET Drives Category

GET Savings Category

GET Applications Category

GET to know VFD’s Category

It is precisely there where you will find much more information to the general subject plus much more specific referrals to very much related downloads. When you prefer to view directly all the corresponding file folders you may also proceed directly to the FC-300 folder in our

GET Sky Drive Section

We certainly do hope that you enjoyed again the read and that you stay with us for more upcoming technical reading pleasure.

Retrieve our GET Contact Details or send us your E-mail inquiry through the GET Contact Form.

Ralf Wabersich

Gingoog Electric Trading (G.E.T.)


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