SK2403 - Variable speed drive - CONTROL TECHNIQUES

Control Techniques SK2403 frequency drive, Commander SK

The SK2403 frequency drive is part of the Commander SK series from Control Techniques. Designed for speed control of three-phase asynchronous motors, it addresses availability requirements for production lines and industrial utilities. In maintenance and retrofit contexts, the SK2403 reference simplifies the replacement of older drives from the same family and allows retaining the existing automation architecture without extensive requalification. The supply range is three-phase 380 to 480 V AC, with application power of approximately 11 kW and a typical output current of 25 A, values consistent with the general use of the range. The compact enclosure and the user-friendly parameterisation of the Commander SK family enable commissioning by a maintenance technician while ensuring stable speed control for processes such as conveying, ventilation, pumping or mixing. This reference is offered by SEI as refurbished supply, standard exchange and repair.

Technical specifications

• Manufacturer reference : SK2403
• Range : Commander SK
• Manufacturer : Control Techniques
• Type : Frequency drive for three-phase asynchronous motors
• Supply voltage : 380 to 480 V AC three-phase, 50/60 Hz
• Rated application power : approximately 11 kW (≈ 15 CV), depending on application
• Output current : typical value 25 A, depending on installation conditions
• Output voltage : three-phase for asynchronous motor, depends on input voltage
• Control mode : not provided in these data, depends on the range configuration
• Switching frequency : not provided
• Degree of protection : not provided

Overview of the Commander SK range

The Commander SK series from Control Techniques is widely deployed for general-purpose variable speed applications. It targets motor energy efficiency, process stability and ease of implementation. Thanks to consistent parameter logic across power sizes, the range facilitates quick replacement of a drive reaching end of life or declared obsolete, while ensuring functional compatibility with the existing automation environment. Options and accessories available for the Commander SK family, depending on versions and configurations, allow adapting I/O level, brake management and control connectivity. For older installations where service continuity is critical, using standard exchange or refurbished supply secures restart without full requalification of downstream equipment.

• General variable-speed applications : conveying, pumping, ventilation, mixing, dosing, auxiliary drives
• Maintenance and retrofit : targeted replacements within the same series to reduce downtime and preserve the existing architecture

Within this approach, the SK2403 model covers the power class around 11 kW, suitable for mid-size pumps and fans, medium-throughput packaging lines and continuous handling equipment. The 380 to 480 V supply range enables use on standard 400 V industrial networks, subject to verification of the motor nameplate, nominal current and the thermal margins related to the installation environment.

Industrial applications

The SK2403 drive fits common operational contexts where speed accuracy, robustness and straightforward diagnostics are priorities. The scenarios below illustrate typical use cases observed in maintenance and operations.

• Conveying and intralogistics : speed adjustment for belts, drive rollers and synchronized transfers in packaging
• Pumps and ventilation : flow adjustment, energy consumption reduction using speed laws matched to demand
• Compressors and blowers : variable speed control to stabilise pressure or flow
• Mixers and extruders : maintaining consistent torque for continuous processes
• Winding and unwinding : managing linear speed, controlling production stability

Integration and communication

The SK2403 is designed for direct integration into architectures controlled by a programmable logic controller. Start-stop-speed control is typically performed via logic input terminals and analog reference signals, while advanced communication is possible depending on the options and modules available within the Commander SK range. This approach allows inserting the drive into multi-vendor systems and retaining existing control sequences. For commissioning, the series provides a local keypad or dedicated parameterisation tools to speed up creation of reproducible parameter sets and secure on-site replacements.

As part of operational reliability, it is recommended to verify the match between motor rated power and the intended operating range, the cabinet heat dissipation capacity, the possible presence of a motor brake, and the site's EMC requirements. Selection of accessories such as braking resistors or input filters depends on the application and local electrical context. The Standard Exchange Industry team supports identifying the compatible reference within the Commander SK range, taking operational constraints and restart lead times into account.

Availability and warranty

The Control Techniques SK2403 frequency drive is offered as refurbished supply, standard exchange or repair. Each unit supplied is tested on a test bench according to a dedicated protocol, then shipped within 24 to 72 hours. Standard Exchange Industry delivers to over 120 countries and provides a warranty associated with the chosen service. In case of production stoppage, we help you validate functional compatibility with your motor and line PLC, and select the fastest solution to secure production restart.