SKA1200037 - Variable speed drive - CONTROL TECHNIQUES

Control Techniques frequency inverter SKA1200037 - Commander SK / Digidrive SK

The frequency inverter SKA1200037 belongs to the Commander SK / Digidrive SK family from Control Techniques. Designed for maintenance teams, integrators and machine builders, it addresses the need for simple, reliable control of three-phase induction motors in light to medium industrial environments. Its architecture features DSP-driven sensorless vector control with an adjustable carrier frequency. This combination delivers good torque hold at low speed and consistent dynamic response for common automation tasks. The unit accepts a single-phase 200-240 V AC supply and provides a nominal motor output of 0.37 kW (approximately 0.5 hp), with a rated current of 2.2 A. Particular attention has been paid to compactness for panel or cabinet mounting, electromagnetic compatibility via an integrated EMC filter, and ease of commissioning, with direct adjustment of acceleration and deceleration ramps and motor protections. Altogether, it is a robust variable speed drive solution for conveyors, small pumps and ventilation applications, while minimising cabinet footprint and downtime during interventions.

Technical specifications

• Référence constructeur : SKA1200037
• Gamme : Commander SK / Digidrive SK
• Constructeur : Control Techniques
• Type : AC variable speed drive, sensorless vector control, variable frequency
• Tension d'alimentation : 200-240 V AC single-phase
• Puissance nominale : 0.37 kW (0.5 hp)
• Courant nominal : 2.2 A
• Tension de sortie : Variable three-phase output for induction motors
• Fréquence porteuse : Adjustable, DSP‑synthesised in PWM
• Compatibilité CEM : Integrated EMC filter
• Protections intégrées : Motor overload, overcurrent, overvoltage, undervoltage

Overview of the Commander SK / Digidrive SK family

The Commander SK / Digidrive SK series targets standard industrial applications where efficiency, simple parameterisation and torque retention are key. The control core relies on two microprocessors including a DSP, enabling high-quality PWM modulation and good low-speed stability. Drives in this family are notable for a compact design for fast cabinet wiring, basic functions accessible without complex software, and optimised cooling fan management that reduces noise and preserves components. They suit environments where reliable speed control is required without resorting to advanced drive architectures.

• Commander SK : General-purpose orientation, quick commissioning, sensorless vector control, direct user interface and streamlined parameter logic for field use.
• Digidrive SK : Compact, cost-effective platform, two-speed fan control, built-in protections and EMC filter for installations meeting common industrial requirements.

The SKA1200037 model sits within this range with an output of 0.37 kW, suited to low-power constant-torque drives while benefiting from the series' strengths, notably compactness, electromagnetic compatibility and stable speed regulation.

Industrial applications

Thanks to its sensorless vector control and compact format, the SKA1200037 covers a wide range of standard uses. It is aimed at production lines requiring reliable speed control of three-phase induction motors, with reduced footprint and simplified maintenance. The parameter logic and integrated protections make it a relevant choice for quick upgrades or replacements on existing installations.

• Conveying and light material handling : Conveying, feeding stations, ejecting and sorting, with controlled acceleration and deceleration.
• Pumps and ventilation : Flow adjustment, energy optimisation by speed variation in common operating ranges.
• Packaging machines : Roller drives, timing of repetitive motions on standalone stations.
• Food and light processing : Mixers, dispensers, hygienic conveyors, stable low-speed control.
• Workshops and OEMs : Auxiliary drives on special machines where simplicity and compactness prevail.

Integration and communication

Integration of the SKA1200037 into an automation architecture is typically done via the drive's standard inputs and outputs and the front operator panel for commissioning. Parameterisation covers frequency references, acceleration and deceleration ramps, and motor protection thresholds. This approach enables fast start-up both in the workshop and on site. Control by programmable logic controller and basic supervision are facilitated by the drive's control logic, which integrates easily within standalone cells or compact machines. Depending on the chosen configuration within the range, modules may be available to exchange information with the automation system, in accordance with the manufacturer's documentation.

The design accounts for electromagnetic compatibility constraints, with an integrated EMC filter to limit conducted disturbances. Two-speed fan management, available on the Digidrive SK range, helps reduce noise and extend component life. Good installation practices in cabinets, using screened motor cables and proper earthing contribute to overall reliability. This technical coherence makes the drive suitable for environments where digital speed control must remain clear, stable and repeatable without the complexity of a servo drive.

Availability and warranty

The Control Techniques drive SKA1200037 is offered by Standard Exchange Industry as refurbished or exchange stock, bench-tested and covered by a warranty. Shipping is provided within 24 to 72 hours to over 120 countries. In case of line stoppage or obsolescence, our technical team will assist to confirm part compatibility, evaluate a functional alternative within the Commander SK / Digidrive SK range and manage return to service. A repair service is also available when retaining the equipment in place is required. This operational reliability-focused approach aims to reduce downtime and secure the availability of your drives, respecting industrial constraints and production schedules.