SK1,2T - Variable speed drive - LEROY SOMER

Variable frequency drive LEROY SOMER SK1,2T - DIGIDRIVE SK

The variable frequency drive reference SK1,2T is part of the DIGIDRIVE SK range from LEROY SOMER, developed for driving asynchronous variable-speed motors in demanding industrial environments. This series stands out for fast operational commissioning, modular architecture and broad compatibility with common automation equipment. The speed control enables fine process adaptation, reduced mechanical shocks and energy-efficient operation. For maintenance, the unit simplifies on-site replacement thanks to a consistent parameter logic across the series. For continuously operating production lines, this reference provides a reliable solution for frequency variation needs, from conveying and dosing applications to machine auxiliaries. Maintenance, integration and retrofit teams will find a robust device that is both easy to integrate and to troubleshoot, while remaining aligned with B2B industry standards.

Technical specifications

• Manufacturer reference : SK1,2T
• Range : DIGIDRIVE SK
• Manufacturer : LEROY SOMER
• Type : Variable speed drive for three-phase asynchronous motors
• Supply voltage : depending on series configuration, single-phase or three-phase 50/60 Hz
• Power range : suitable for low- to medium-power motors within the DIGIDRIVE SK range
• Output voltage : three-phase PWM, from 0 up to mains voltage, depending on configuration
• Control modes : scalar V/Hz, open-loop vector control, closed-loop possible depending on encoder input options
• Inputs/Outputs : standard digital I/O and analog I/O for local control and speed reference
• Protection rating : depending on enclosure variant and panel integration conditions

Overview of the DIGIDRIVE SK range

The DIGIDRIVE SK series has been widely deployed in industry for frequency control of asynchronous motors, with particular attention to ease of commissioning, regulation stability and durability in industrial environments. The modular architecture of the range allows addition of communication options, encoder input interfaces and I/O modules to adapt the drive to the required level of control for the application. Standardised parameters across the family simplify corrective replacements and retrofit operations.

• Efficient speed control : precise management of acceleration, ramping, torque limits and start-stop profiles to control mechanical stress and product quality
• Flexible integration : selection of communication modules according to the plant fieldbus, with local or remote configuration

The SK1,2T model follows this scalable equipment approach. It enables new or existing lines to be equipped with control adapted to flow, pressure or mechanical tension constraints, integrating into environments with programmable logic controllers and numerical control systems from multiple manufacturers.

Industrial applications

This variable frequency drive integrates into many industrial processes where controlling speed and torque improves machine availability and energy performance. Typical use cases below illustrate the versatility of the DIGIDRIVE SK series, from machine auxiliaries to continuous production lines.

• Conveying and material handling : speed adjustment, section synchronization, reduction of impact when loading
• Pumps and ventilation : flow adaptation, reduction of current peaks, energy optimisation on partial cycles
• Packaging : synchronization of auxiliary axes, web tension, stabilized throughput
• Food and chemical processes : dosing, mixing, agitation with reproducible speed setpoints
• Machine tool auxiliaries : chip conveyors, lubricant pumps, peripheral equipment driven in V/Hz

Integration and communication

The SK1,2T offers local I/O for direct control via discrete contacts, potentiometer or standardized analog signals. Depending on options selected in the range, fieldbus integration is possible via dedicated communication cards, for example Modbus RTU, CANopen, PROFIBUS-DP or DeviceNet. This connectivity facilitates operation by the line PLC, status reporting and reception of digital setpoints, while keeping a local control mode available in degraded operation. The drive naturally fits into architectures combining programmable logic controllers, servo-drives for dynamic axes and numerical control for process functions.

Parameterisation is performed via the local keypad and display of the drive, by commissioning software depending on available tooling, or over the fieldbus when factory supervision is in place. Parameter sets can be saved and reapplied to reduce restart time after a replacement. Standard ramp, soft-start and controlled stop functions help protect mechanical and electrical components.

Availability and warranty

The LEROY SOMER SK1,2T drive is offered by Standard Exchange Industry as refurbished supply, exchange unit or repair, with functional bench testing and traceability. Shipping is provided within 24 to 72 hours to many countries to meet urgent restart requirements. Each unit comes with a contractual warranty; duration depends on the chosen service. If there is any doubt about compatibility, our technical team can verify the exact reference, required control mode, fieldbus needs and targeted motor power to secure integration. This approach limits downtime risk, aligns configuration with process requirements and ensures a return to service that meets productivity expectations.