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2-year Warranty

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Control Techniques SP1406

Rated 5/5 on 2 reviews

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MANUFACTURER: Control Techniques

DESCRIPTION: 400V AC Panel Mount Drive 


9 in stock

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2 Year warranty

Part NumberSP1406
ManufacturerControl Techniques
TypeAC Drives
Warranty2 Year
Typical Motor Output Power (HP)5
Input Voltage380 - 480VAC
Frame Size1
Normal Duty
Max Cont. Current (A)11
Typical Motor Output Power (kW)5.5
Typical Motor Output Power (HP)7.5
Heavy Duty
Max Cont. Current (A)9.5
Typical Motor Output Power (kW)4

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 SP1406 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 SP1406 we also repair a wide range of other Control Techniques products, 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 SP1406, 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 : 11lbs

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  • Order within the next 17 hours and 39 minutes.
  • If you order between 4pm and 6pm EST, you will be charged a small rush fee.

Ask about exchanging your faulty SP1406 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.

Control Techniques SP1406 Overview

Control Techniques SP 1406 Overview

The SP 1406 is a 3-phase size 1 AC variable speed drive product manufactured by Control Techniques for the Unidrive SP line of drives.  The Control Techniques SP line is dual-rated for both heavy duty and normal duty. The motors designed to be compatible with IEC60034 are supported by the dual-rated SP drive. The SP 1406 is a 400 V AC panel mount drive.

Features of the SP 1406 Unidrive

The 400 V 3 Phase size 1 SP 1406 AC variable speed drive is dual-rated. The Normal Duty ratings for the SP 1406 differ from the Heavy-Duty ratings.  For Normal Duty use the SP 1406 has a max continuous output current rating of 11 A and a nominal power rating of 5.5 kW at 400 V. The normal duty motor power rating of the SP 1406 is 7.5 hp at 460 V. The normal duty peak current rating for the SP 1406 variable speed drive is 12. A. The Heavy Duty max continuous output current rating is 9.5 A. The Heavy Duty open loop peak current rating is 14.2 A. The Heavy Duty closed loop peak current rating is 16.6 A. The Heavy Duty nominal power rating at 400 V is4.0 kW, and the motor power rating in Heavy duty mode is 5.0 hp at 460 V.

The typical input current for the SP 1406 is 12.6 A with the max continuous input current being 13.4 A. The fuse rating IEC gG is 16 A. The input for cable size EN60204 is 2.5 mm² and the output 1.5 mm².


The SP 1406 can be operated by 24Vdc (control) and 48Vdc (power) low-voltage DC supplies. This is helpful in two ways. One of how this is beneficial is that it helps to keep motor operation when there is an emergency backup situation when there has been an AC supply failure. Another way in which this is beneficial is that during start-up, or when the unit is commissioned, it can limit the speed of the servo motor. The following is the working voltage range available when the power supply is low voltage.  Minimum continuous operating voltage: 36V Minimum start-up voltage: 40V Nominal continuous operating voltage: 48V Maximum braking IGBT turn-on voltage: 63.6V Maximum overvoltage trip threshold: 69.6V.

Several encoders are compatible with the Unidrive SP line of variable-speed drives.


The Control Techniques SP line of variable speed drives is designed to operate in several operating modes. The first is open loop mode which includes open loop vector mode, fixed V/F mode (V/Hz), and Quadratic V/F mode (V/Hz). The second operating mode that the SP 1406 can operate in is the RFC mode. The third operating mode is the closed loop vector. The fourth operating mode of the SP 1406 is Servo mode, and the final operating mode of the Control Techniques AC variable speed drive is 4 is Regen.

FAQ: Control Techniques SP1406 AC Drive

What are the Control Techniques SP1406 AC Drive used for?

The Control Techniques SP1406 AC Drive controls the speed and torque of AC motors in various industrial applications.

What is the typical motor output power of the SP1406 AC Drive?

The SP1406 is typically used with motors with an output power ranging from 5 HP (3.7 kW) to 7.5 HP (5.5 kW).

What input voltage range does the SP1406 AC Drive support?

The SP1406 AC Drive's input voltage range is 380 to 480VAC, making it compatible with standard industrial power systems.

What is the frame size of the SP1406 AC Drive?

The SP1406 AC Drive has a frame size of 1, which determines its physical dimensions and compatibility with mounting arrangements.

What does the SP1406 AC Drive support the duty classifications?

The SP1406 AC Drive supports both normal-duty and heavy-duty applications, providing versatility for various industrial requirements.

What are the maximum continuous current ratings for regular and heavy-duty operations?

The max continuous current for normal duty is 11 A, while for heavy-duty applications, it is 9.5 A. These ratings determine the drive's capability to handle load variations and continuous operation.

How does the SP1406 AC Drive contribute to energy efficiency and motor control?

By precisely controlling the speed and torque of AC motors, the SP1406 AC Drive helps optimize energy usage and improve overall system efficiency. It ensures smooth motor operation while minimizing energy wastage.

What key features make the SP1406 AC Drive stand out?

The SP1406 AC Drive offers reliable performance, robust construction, and advanced motor control features. Its compact design and user-friendly interface make installing and operating in industrial environments easy.

Is the SP1406 AC Drive suitable for a specific industry or application?

The SP1406 AC Drive is versatile and can be used in various industries such as manufacturing, HVAC, water treatment, etc. It is suitable for applications requiring precise motor speed and torque control.

Contact Us Today For More Information About Control Techniques 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 emailing us at, we strive for customer satisfaction first. This means lower prices and better service for you. For more products like SP1406, 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 SP1406 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.

5 stars

4.9 Overall Satisfaction Rating

Over 1700 Ratings from Actual Customers

Read Our Reviews

Very happy with the overall service, delivery, communication and delivery,

Conley Cooke

I needed a special drive, found it, and I was quickly assisted by Joe Kaminski. Everything was exactly as it should be....


We have an older DMU80 CNC Machine and the Handheld Control was damaged beyond repair. MRO was very helpful in confirmin...

Abbey-Purchasing Specialist