AC & DC VFD Drives
Variable-frequency drives for pumps, fans, conveyors and process lines, plus DC drives where an existing DC motor stays in service.
Sensorless vector / V-fPID & preset speedsModbus / Ethernet
SPEED & TORQUE CONTROL
VFDs, Soft Starters & Drive Panels
Variable-frequency and DC drives, soft starters and medium-voltage drive systems — specified against the actual load curve, then supplied loose or built into a packaged panel.
OVERVIEW
A drive is only as good as the load data behind it. We size against the driven load — variable or constant torque, starting duty, overload profile — rather than simply matching the motor nameplate, and we check the cable run and motor insulation before quoting.
Drives can be supplied as a chassis unit for your own enclosure, or as a packaged panel we build in-house with reactors, bypass, cooling and control gear already wired and tested.
THE LINE-UP
What we design, build and supply.
Softstarters
Controlled ramp start and stop to cut inrush current and the mechanical shock on couplings, belts and pipework.
Voltage ramp / current limitIntegrated bypassSoft-stop for pumps
Medium Voltage Drives
MV drive systems for large motors in heavy industrial and utility service, where LT drives run out of headroom.
Multi-level topologyTransformer-fedApplication-engineered
Packaged Drive Panels
Drives built into a fabricated panel with incomer, reactors, contactor bypass and forced ventilation, wired to your control scheme.
Up to 400 kWManual / auto bypassForced ventilation
Reactors, Filters & Drive Accessories
Line and load reactors, dU/dt and EMC filters, braking resistors and remote keypads sized to the drive and the cable run.
Line / load reactorsdU/dt filtersBraking resistors
3-Phase Industrial Motors
Squirrel-cage induction motors for pumps, fans, compressors and process machinery, in standard and energy-efficient classes, matched to the drive or starter.
IE2 / IE3 efficiencyFoot / flange mountInverter-duty options
PRODUCT PAGES
Explore each product.
IN-HOUSE CAPABILITY
How the work actually gets done.
- Load-curve review and drive sizing against starting and overload duty
- Drive parameter setup, autotune and commissioning on the motor
- Packaged drive panel design, fabrication and wiring in-house
- Harmonic and EMC mitigation with line reactors and filters
- Retrofit of drives onto existing motors and starters
- Fault diagnosis, spares and post-commissioning support
SPECIFICATIONS & STANDARDS
The numbers we build to.
| Design standard | IEC 61800 — adjustable-speed electrical power drive systems |
|---|---|
| EMC | IEC 61800-3, with line reactors and EMC filters as required |
| Packaged panel rating | Up to 400 kW |
| Enclosure protection | IP20 chassis · IP54 packaged panel |
| Motor cable | Screened cable within the drive's stated length limit; dU/dt or output filters on long runs |
| Energy saving | Variable-torque loads — pumps and fans follow the affinity laws at reduced speed |
| Communications | Modbus RTU / TCP, Ethernet, analogue and digital I/O |
MANUFACTURER LINES
Brands behind this category.
WHAT YOU GET
From enquiry to after-sales.
- Application study and drive selection against the load curve
- Supply of chassis drives or a complete packaged drive panel
- Parameter configuration, autotune and on-load commissioning
- Retrofit and upgrade of existing starters to drive control
- Breakdown support, spares and replacement units
FROM THE FLOOR
VFDs, Soft Starters & Drive Panels in the field.
COMMON QUESTIONS
Before you enquire.
Will a VFD actually save energy on my pump?
On a variable-torque load such as a centrifugal pump or fan, yes — power falls roughly with the cube of speed, so throttling by speed instead of a valve or damper saves a great deal. On a constant-torque load the saving is much smaller, and we will tell you when a drive is not the right answer.
Do you supply the drive on its own, or a complete panel?
Either. We supply chassis drives for you to mount, or build a packaged panel with reactors, bypass, cooling and control gear wired and tested before dispatch.
Can a drive be retrofitted to an existing motor?
Usually. We check the motor's insulation class, the cable length and the cooling at reduced speed first — long cable runs may need an output filter, and a self-cooled motor running slowly may need forced ventilation.
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