SKDD200300 - Variable speed drive - CONTROL TECHNIQUES

Control Techniques SKDD200300 Frequency Drive - Digidrive SK

The drive reference SKDD200300 belongs to the Digidrive SK range from Control Techniques (Nidec group). Designed for driving three-phase asynchronous motors in general industrial applications, it is based on a dual microprocessor architecture with a DSP dedicated to generating a PWM signal at an adjustable carrier frequency. This design ensures stable speed regulation, controlled torque at low speed and reliable integration within automated architectures driven by a programmable logic controller. The Digidrive SK series meets the needs of conveying, pumping, ventilation and simple automation tasks, offering start/stop, speed setpoint, acceleration and deceleration ramps, as well as standard motor protections. The SKDD200300 model is positioned as a compact, robust frequency drive, suitable for maintenance, equipment upgrades and reducing downtime.

Technical specifications

• Manufacturer reference : SKDD200300
• Range : Digidrive SK
• Manufacturer : Control Techniques (Nidec)
• Type : AC variable speed drive for three-phase asynchronous motor, compact format
• Supply voltage : depends on series version, typically 200-240 V or 380-480 V AC three-phase, to be confirmed for SKDD200300
• Rated power : family range from 0.37 kW to several kW, exact value to be confirmed for SKDD200300
• Rated output current : to be confirmed on the drive nameplate
• Output voltage : three-phase variable according to the supply
• Control mode : V/f law and sensorless vector control depending on settings
• Switching frequency : adjustable via DSP to optimize motor noise and performance
• I/O and control : analog and digital inputs, relay outputs, speed setpoint, start/stop, direction

Overview of the Digidrive SK range

The Digidrive SK series covers general drive requirements on industrial sites where reliability and ease of implementation are priorities. It is available in several mechanical sizes and option levels to address both maintenance of existing equipment and integration on new machines. Drives in this range install quickly, offer a local keypad depending on the version, and rely on clear parameter settings to limit downtime during replacements.

• Efficiency and smoothness focus : profile suited to fans and pumps, with configurable ramps and energy optimisation inherent to frequency variation.
• Automation and handling focus : profile dedicated to conveyors, infeed tables and auxiliary drives requiring stable speed regulation and good torque hold at low speed.

The SKDD200300 benefits from the dual microprocessor architecture with PWM driven by DSP, which promotes fast response to load variations and more precise motor control, particularly during acceleration and controlled stopping phases.

Industrial applications

This frequency drive integrates into new systems or replaces units on existing lines, interfacing with programmable logic controllers and digital control devices when a reliable speed variation is required.

• Conveyors and material handling : speed regulation, smooth starts, adaptation to variable loads.
• Pumps and ventilation : flow and pressure adjustment via frequency variation, reduced mechanical stress.
• Packaging : auxiliary drives, simple synchronization and adjustable rates.
• Food and beverage : drive motors for process lines, product transport, speed-based dosing.
• Water treatment and HVAC : control of booster pumps, extractors and ventilation units with analog setpoints.

Integration and communication

The SKDD200300 provides analog and digital I/O terminals for direct PLC control, including start/stop, setpoint selection and direction change. Depending on the series version, optional communication cards enable fieldbus integration. Parameterization is performed via the local panel when present and via the manufacturer's commissioning software, with a menu structure designed to speed up configuration of V/f and vector control, ramps, protection thresholds and motor optimization functions. The built-in protections against overload, overcurrent, overvoltage, undervoltage and overheating contribute to system availability. On some sizes of the Digidrive SK family, a two-speed fan controlled by the drive optimizes cooling and reduces aerodynamic noise.

Within an automation architecture, the drive interfaces easily with the programmable logic controller using discrete and analog I/O. It is aimed at process engineers, automation engineers and maintenance technicians seeking a stable, predictable solution without requiring a servo drive when control of a standard asynchronous motor meets the process requirements.

Availability and warranty

The Control Techniques SKDD200300 drive is offered by Standard Exchange Industry as standard exchange, as refurbished units tested on bench, and for repair. We ship within 24 to 72 hours to over 120 countries. Services come with a warranty of 6 to 24 months depending on the chosen service. To confirm the exact supply voltage, power and rated current for reference SKDD200300, we recommend checking the Digidrive SK manufacturer documentation or the product nameplate. Our technical team will assist you to validate mechanical and electrical compatibility with your motor and supply, and to define start-up parameters to secure recommissioning.