Drives and Control Solutions

Motors, Control Solutions, Power Transmission and Advanced Motion Technology                                                                 

March 31, 2020

AutomationDirect has added new line reactor models and VTF (voltage time filter) series output filters that protect AC motors and variable frequency (VFD) drives from electrical disturbances.

The LR2 line reactor series adds seven new frame sizes to match all GS, DURApulse and WEG drives. The LR2 Series can also be used with a variety of other VFD brands. Line Reactors (from $48.00) are used on VFD line inputs to protect the drive from current spikes created by the VFD. On VFD outputs, line reactors protect motors, allow cooler running, and are recommended for operating VFD’s with “non-inverter-duty” motors, and for any motors where the length of wiring between the AC drive and motor is less than or equal to 100 feet. For wiring distances over 100 feet, the VTF series output filter is recommended.

Starting at $329.00, VTF series output filters combine line reactor and resistor-capacitor filter circuit to provide protection against voltage wave reflection, especially on long motor cable runs up to 1,000 feet. VTF filters, by increasing voltage rise time, limit voltage spikes from exceeding 1,000V to protect cable runs and reduce motor heating, noise, vibration and motor insulation breakdown.

AC line reactors and output filters from AutomationDirect are UL listed and have a one-year warranty.

Learn more by visiting www.automationdirect.com/ac-drives.


Editor's Pick: Featured Article


Motor Duty CyclesWhat Are Motor Duty Cycles?

When selecting a motor, it is important to consider the required duty cycle to ensure the motor can meet the needs of the application.  This blog post and the accompanying light board video will provide a basic introduction to motor duty cycles and a few of the most common types of duty cycles.

The International Electrotechnical Commission (IEC) defines eight classifications for duty cycle which are grouped by continuous, short term, or periodic cycles.  These cycles refer to the sequence and durations in time of all aspects of a typical operation, including starting, running with no load, running with full load, electric braking, and rest. 

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Servo MotorsThe ability to size servo motors correctly is imperative for motion-controlled applications, and it can be much more involved than sizing AC induction motors. Acceleration, deceleration, and running torque must still be taken into account, but the servo’s ability to dynamically control the load’s speed and position is also important. During acceleration and deceleration, peak and nominal running torque measurements must be calculated to ensure that the servo motor does not overheat during use. In addition, inertia matching between the motor and load is necessary to ensure optimum response and system performance.

 

 

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