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Manufacturer: Control Techniques

DESCRIPTION:  UNI2403 AC Drive SIZE2 24.3AMP 380/480VAC 15HP



13 in stock

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2 Year warranty
Part NumberUNI2403
ManufacturerControl Techniques
Model #UNI2403
TypeAC Drives
Warranty2 Year
Operating ModesOpen Loop
Closed Loop vector
Nominal Rating - kW11
Nominal Rating - hp15
Max. Continuous Output Current at 40°C ambient (A)
Max. Continuous Output Current at 50°C ambient (A)
Typical Input Current (A)21
Max. Continous Output Current (A)25
Minimum Resistance (Ω)30
Instantaneous Powe Rating (kW)20

Our Repair Services

MRO Electric repairs CNCs, PLCs, Servo/Spindle Drives, Motors, Amplifiers, VFDs, HMIs, and more, most of which can be repaired in only 3-5 days.

Repair Benefits

MRO can restore your failed UNI2403 to remanufactured condition and save you up to 75% compared to buying new. We offer standard repair pricing to ensure you the best value for your repair.

Our certified technicians use rigorous testing procedures to ensure your parts are restored to fully functioning condition. Our team proudly stands behind all repairs by providing a minimum 2 year warranty.

Our technicians have vast experience with most manufacturers and models. In addition to this UNI2403 we also repair drives, motors, PLCs and more, so if you don’t see the model you need, please contact us.

Core Exchange

If you are interested in getting credit for your faulty UNI2403, just let us know and we can issue you an RMA to send it in as an exchange. Our exchange program provides you with savings and keeps us stocked for the next time you need anything.

  • Shipping Weight : 18lbs

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  • Order within the next 23 hours and 50 minutes.
  • If you order between 4pm and 6pm EST, you will be charged a small rush fee.

Ask about exchanging your faulty UNI2403 for credit when ordering from MRO Electric

MRO Electric provides a 2-year warranty on every item we sell and repair. We stand behind all of our products and guarantee them for the full 2 years. If there is an issue with any of our products within the warranty period, we will evaluate the unit and repair or replace it under warranty.

Additional Information

Control Techniques UNI2403 Overview

The Unidrive UNI2403 size 2 drive is manufactured by Control Techniques. This module has a nominal rating of 11 kW @ 380 V and a nominal rating of 15 hp @ 460 V. The output current is 25 A and the typical input current is 21.0 A.


There are four operating modes for the Control Techniques Uni2403. The operating modes are open-loop, closed-loop vector, servo, and regen. The front has an upper and lower display with 5 programming keys. It has three control keys for controls such as Forward, Reverse, Stop, Reset, and Run. Beneath the control keys is a connection for a small option module. The final connections on the bottom front of the Uni2403 are the control connectors and the encoder connection. The filter type footprint or bookcase. The maximum cable size for this module is 4 mm2 10 AWG. The max cable length is 990ft.


The Control Techniques UNI2403 can be mounted either through-hole or surface mounting using the correct brackets. The UNI2403 works in 4 modes. Several option modules are available and can easily be fitted to the UNI2403.

How to use a UNI2403

The open-loop mode is used with standard AC induction motors. Power applied by the drive to the motor is user varied. The output frequency of the drive and the slip inform the motor speed. this is due to the mechanical load. By applying for slip compensation the Control Techniques unidrive can improve motor performance. Low-speed performance can be improved but it depends on whether V/f mode or open-loop vector mode is chosen. In V/f mode motor voltage is directly proportional to the frequency. The exception is the low speed where there is a user-set boost in voltage. When should you use this mode? This mode is used when there are multi-motor applications. In open-loop vector mode, the voltage applied to the motor is directly proportional to the frequency. The exception is low speed. When speed is low the drive uses motor parameters to apply the correct voltage. This keeps the flux constant when load conditions vary. Closed-loop vector mode (VT) is used with induction motors. The induction motor will have a speed feedback device fitted. Using this feedback device, the drive directly controls the speed of the motor. This ensures that the rotor speed is correct per the demands. Motor flux is kept under control so that you can enjoy full torque down to zero speed. Servo mode is used with permanent magnet brushless motors. The permanent magnet brushless motors are fitted with a position feedback module. Using the feedback modules, the drive directly controls the speed of the motor to make sure the rotor speed is correct. There is no need for flux control since the motor is self-excited by the magnets that form part of the rotor. Position info is given by the control device for output voltage is correctly matched to the rear EMF of the motor. Regan is used as a regenerative front end in a four-quadrant operation. 

Product Description

The UNI2403 is a UNI2403 AC Drive SIZE2 24.3AMP 380/480VAC 15HP that is manufactured by Control Techniques. These products are manufactured in United Kingdom and are designed for Metal production, paper processing, and material conveying usage. All of the products come with a 2 year warranty from MRO Electric. We also carry AC Drives from other manufacturers such as Siemens and Yaskawa.

Related Products

Check out the rest of our Control Techniques product line. Whether it's using our online instant quote feature, giving us a call at (800) 691-8511, or sending us an email at, we strive for customer satisfaction first. This means lower prices and better service for you. For more products like UNI2403, take a look at more from our AC Drives line. If your current unit has gone bad, take advantage of our Core Exchange program for the most inexpensive route. You can learn more about this program on our FAQ page here. We offer a repair service on all of our UNI2403 products that keep your downtime to a minimum. To stay up to date on manufacturer news, as well as access any of our datasheets, manuals, or other documentation, we suggest you take a look at our blog.

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