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Our offices will be closed on Monday, May 29th, in observance of Memorial Day. FedEx paid priority & FREE delivery orders placed before 5:00PM ET on Friday, May 26th will ship same day (if paid for by CC or PO account in good standing). FedEx/UPS ground & freight orders have a 1:00PM ET cutoff. Orders placed after the Friday cutoff times will ship on Tuesday, May 30th.
Input line reactors protect the AC drive from transient overvoltage conditions typically caused by utility capacitor
switching. Input line reactors also reduce the harmonics associated with AC drives and are recommended for all installations.
Output line (load) reactors protect the motor insulation against AC drive short circuits and IGBT reflective wave damage, and
also allow the motor to run cooler by "smoothing" the motor current waveform. They are recommended for operating
"non-inverter-duty" motors, and for any motors where the length of wiring between the AC drive and motor is less than 100 feet.
For AC Drive-to-Motor wiring distances over 100 feet, use of the VTF series output filter is recommended.
Braking Units and Resistors
Braking resistors are used to increase the braking torque of the AC drive, for frequently repeated ON-OFF cycles
of the AC drive, or for decelerating a load with large inertia.
Larger AC drives also require that dynamic braking units be used in conjunction with the appropriate braking resistors.
Filters reduce electromagnetic interference and offer high performance for use in a variety of drive applications
where long motor supply cable runs are necessary and where compliance with industrial noise limits is required.
Software, Comms & I/O Modules
Drive configuration and programming software allows the user to connect to a VFD from a PC for fast, convenient setup
and/or programming of a built-in PLC, and offline storage of (multiple) configuration parameters.
Option cards are available to increase the available I/O or add communications capabilities.
Replacement cooling fans for drives are direct replacements, dimensionally and electrically equivalent to the original part.
Fan electrical loading is included in the input amperage ratings of the drives, and the DC voltage to power the fans is
provided internally by the drives.