SK2ML - Variable speed drive - LEROY SOMER

LEROY SOMER SK2ML frequency drive - Industrial series

The SK2ML frequency drive from LEROY SOMER is designed to control asynchronous motors in demanding production environments. It targets maintenance teams, system integrators and engineering offices looking for a reliable solution to control speed, stabilise torque and optimise the energy efficiency of their drives. This reference belongs to a widely deployed family of industrial drives, valued for methodical commissioning, straightforward parameterisation and compatibility with existing automation architectures. Whether replacing an installed unit, upgrading obsolete equipment or for a new installation, the SK2ML meets common requirements for conveying, pumping, ventilation or processing by ensuring consistent motor control and improved management of acceleration and deceleration cycles. The approach is factual and focused on operational availability, with a design intended to minimise downtime, ease access to connection terminals and secure preventive and corrective maintenance.

Technical specifications

• Manufacturer reference : SK2ML
• Range : LEROY SOMER industrial series of variable speed drives for asynchronous motors
• Manufacturer : LEROY SOMER
• Type : AC drive / frequency inverter
• Supply voltage : to be confirmed by version, typically single-phase or three-phase 50/60 Hz
• Rated power : to be specified according to motor configuration and application sizing
• Output current : depends on variants, to be validated from the nameplate
• Output voltage : PWM-modulated, matched to the site supply voltage, to be confirmed per model
• Control mode : V/f laws and, depending on versions, open-loop vector control, to be confirmed
• Switching frequency : configurable depending on model and EMC constraints, to be specified
• Protection rating : typically IP20 for cabinet mounting, other options depending on environment, to be validated
• I/O interfaces : digital and analog inputs for local control, configuration depends on version
• Communication : possible fieldbus integration via optional communication cards, depending on the automation architecture

LEROY SOMER range overview for AC drives

The LEROY SOMER family dedicated to asynchronous motors includes references designed for speed and torque regulation across most industrial processes. Used both in retrofit and new builds, these drives favour pragmatic design, clear documentation and long-term compatibility with existing automation. Two typical usage approaches are commonly identified depending on process needs:

• Standard V/f control : speed control with ramps, suited to utilities and drives where extreme dynamics are not the priority, while ensuring controlled efficiency.
• Performance-oriented control : on certain versions, implementation of more advanced control algorithms to improve low-speed torque retention and setpoint stability.

The SK2ML model fits into this industrial continuity approach, helping to maintain existing installations in operational condition and reducing risks associated with obsolescence of older AC drives. It is a rational choice to secure production while keeping a controlled supply chain.

Industrial applications

This LEROY SOMER frequency drive is suitable for many B2B applications where motor speed control contributes to process quality and reduced consumption. The sectors below are indicative and must be validated against the exact model specifications and the associated motor.

• Conveying and material handling : speed adjustment, soft starts, simple section synchronisation
• Pumps and ventilation : flow and pressure modulation, reduction of water hammer, operation at partial load
• Compressors and blowers : process setpoint stabilization, energy optimisation under variable load
• Process machinery : mixing, dosing, non-synchronised extruders, auxiliary drives
• Textile, paper, packaging : section regulation, winding and unwinding with setpoint speed control
• Intralogistics : stacker cranes, shuttles, assembly lines with varying throughput

Integration and communication

The SK2ML integrates into automation architectures controlled by programmable controllers via discrete and analog I/O, or via fieldbus when optional communication cards are fitted. Commissioning follows structured steps, including entering motor parameters, defining acceleration and deceleration ramps, configuring alarm thresholds and verifying direction of rotation. Depending on the requirements of the machine controller or the supervision system, remote commands can be assigned, drive status can be reported and faults logged to facilitate maintenance.

Common features on this drive family, to be confirmed for the SK2ML version, typically include a built-in PID controller for simple loops, configurable logic inputs for Run, Stop and JOG modes, an analog input for speed setpoint, as well as thermal and overcurrent protections. Accessories and options may be required depending on the environment, for example an external EMC filter, a line reactor, a bypass contactor or a braking resistor if the application requires it. All items must be validated against motor power, site EMC constraints and applicable standards.

Availability and warranty

Standard Exchange Industry offers the SK2ML as reconditioned supply or as a standard exchange, tested on a test bench, as well as a repair service when appropriate. Each unit is inspected under conditions representative of industrial operation and delivered with a warranty. Shipping is arranged within 24-72 hours, with technical support to confirm reference compatibility, validate critical parameters and secure recommissioning. In case of a line stoppage or a retrofit project, our team assists in precisely identifying the expected version, qualifying the installation context and selecting the best solution for your drive architecture.