SKB3400037 - Variable speed drive - CONTROL TECHNIQUES

Variable frequency drive Control Techniques SKB3400037, Digidrive SK

The frequency drive SKB3400037 is part of the Digidrive SK series from Control Techniques. Designed to control three-phase asynchronous motors in industrial environments, it provides a power rating of 0.37 kW and a supply of 380-480 V AC three-phase. This reference meets the requirements for stable and repeatable speed regulation, essential for production continuity in B2B. It is intended for maintenance teams, system integrators and machine builders looking for a proven solution for like-for-like replacement or standardisation of their drive fleet. The Digidrive SK range is known for its straightforward commissioning, compatibility with standard asynchronous motors and its ability to optimise energy consumption by adjusting speed to process needs. The compact form factor facilitates integration into existing control cabinets while ensuring reliable management of acceleration and deceleration according to application parameters.

Technical characteristics

• Manufacturer reference : SKB3400037
• Range : Digidrive SK
• Manufacturer : Control Techniques
• Category : Variable speed drives for three-phase asynchronous motors
• Supply voltage : 380-480 V AC three-phase, 50/60 Hz
• Rated power : 0.37 kW, approximately 0.5 CV / 0.5 HP
• Rated input current : 1.7 A
• Rated output current : 1.3 A
• Output voltage : three-phase for asynchronous motor, dependent on supply voltage
• Control mode : open-loop speed control suitable for asynchronous motors, as configured within the range
• Integration : cabinet mounting, standard motor and mains connections, local parameter access and commissioning tools available depending on configuration

Overview of the Digidrive SK range

The Digidrive SK series is a family of frequency drives designed for general industrial applications, covering a broad spectrum of low to medium power drives. Its clear parameter logic enables rapid commissioning while retaining the essential control functions required for asynchronous motor applications. Widely used in in-service installations, the range is valued for its availability for like-for-like replacement, minimising downtime and process requalification.

• General use and energy efficiency : speed adjustment according to load, helping to reduce consumption on fans and pumps while maintaining stable flow or pressure.
• Multi-vendor integration : compatibility with a variety of automation architectures, whether a programmable controller, CNC or SCADA, with communication options available depending on the version.

The SKB3400037 model covers low-power applications. It is suitable for machine auxiliaries, light conveyors, local ventilation or small process pumps where controlled speed regulation and ease of use are priorities.

Industrial applications

This frequency drive integrates into many industrial contexts where speed accuracy and repeatable ramps are necessary for process quality and motor protection. Typical use cases include:

• Conveying and light handling : control of feed speed, soft starts, reduction of shocks on roller tables and modular conveyors.
• Pumping and ventilation : speed adjustment to demand, stabilisation of flow or pressure, reduction of water hammer thanks to acceleration and deceleration ramps.
• Packaging : simple synchronisation of auxiliary axes, drive of rollers and web feed systems.
• Textile and paper : control of light sections, basic web tensioning, speed adaptation according to the batch.
• Special machines and auxiliaries : drives for peripheral equipment, dosing, mixing or extraction units.

Integration and communication

The SKB3400037 fits into architectures controlled by a programmable logic controller or by a numerical controller. Depending on the range configuration, communication cards and I/O may be available for setpoints and status exchange. This approach enables coherent insertion into existing systems, whether the environment is multi-vendor or homogeneous. The three-phase 380-480 V supply simplifies compatibility with industrial distribution panels, while the three-phase output to the asynchronous motor ensures precise speed adaptation to process needs.

Commissioning is performed via the local interface and, depending on equipment, via dedicated software tools for the range. Essential parameters such as ramps, frequency limits and basic protections are accessible in a structured way. This parameterisation methodology contributes to safe and repeatable operation, aligned with industrial maintenance standards. Additionally, the Digidrive SK range interfaces with external safety devices and process sensors, enabling coordinated line control with the rest of the automation, whether associated with a servo-drive, a robot, or production cells controlled by PLC.

Availability and warranty

Standard Exchange Industry offers the Control Techniques Digidrive SK SKB3400037 as refurbished stock and exchange units, bench-tested. Our teams ensure dispatch within 24 to 72 hours and a warranty depending on the chosen service. In case of a line stoppage or retrofit need, we assist you to confirm electrical and functional compatibility with the existing motor and cabinet, and to plan recommissioning within timeframes compatible with your production constraints. Our support covers identification of the exact reference, selection of the appropriate replacement mode and, where relevant, guidance towards a repair service when technically and economically appropriate.