Danfoss
Adjustable Frequency Drives
Centro offers a comprehensive range of Danfoss AC drives, meticulously designed to elevate system performance by optimizing pump settings and integrating intelligent protection systems. The Danfoss AC drive is a versatile solution, tailored to suit a myriad of applications, from smaller pumps to high-pressure, high-flow variants. What sets these drives apart is their innate ability to safeguard the drive, motor, and equipment within the system, ensuring robust protection at all times.
Danfoss Drives stands out in the industry as a 100% dedicated entity, entirely focused on the development, manufacturing, and supply of AC drives. Their extensive product line is geared towards enhancing operational efficiency, conserving energy, and reducing emissions. A notable distinction lies in the independence of Danfoss drives from control systems and motor technology. This autonomy translates into multiple pump-dedicated control features, facilitating swift and seamless adjustments for various applications.
This versatility empowers customers to select the motor technology and manufacturer that perfectly aligns with their specific application, ensuring optimal performance and minimal energy consumption. Making the right drive choice and optimizing the entire system has the potential to yield remarkable energy savings of up to 60%.
Danfoss emerges as a trusted partner in the realm of AC drives, sharing your goals and upholding values of mutual trust and respect. In a dynamic and ever-evolving landscape, Danfoss prioritizes speed and agility across all facets of its operations, further reinforcing its commitment to excellence.
How Danfoss Compares
| Comparison | Why Danfoss Wins | Evidence That Supports the Claim | Choose Danfoss If… |
|---|---|---|---|
| Danfoss vs. Siemens Drive | Siemens bundles drives inside a much larger automation platform — which is great if you're buying a full Siemens plant. If you just need a drive for a fan, pump, or blower, that platform adds integration complexity you don't need and support that's spread thin across too many products. Danfoss does one thing: drives. They've been doing it since 1968 and it shows. | Danfoss pioneered VFD technology in 1968 — variable frequency drives are their core business, not a line item in a broader catalog. That focus delivers simpler commissioning, more intuitive setup, and application-specific expertise for fan, pump, and blower loads that a generalist automation platform can't match. Supports PROFIBUS, PROFINET, EtherNet/IP, and MODBUS. Works across AC induction, permanent magnet, and synchronous reluctance motors. | You need a drive for a fan, pump, or blower application and want straightforward commissioning, deep application support, and a manufacturer whose entire business is built around getting that drive right. |
| VFD vs. Soft Starter for Blower | A soft starter gets the motor running without the inrush spike — and that's where it stops. A VFD does that and keeps working after startup, continuously adjusting motor speed to match actual load. On a blower running at partial load most of the time, that's the difference between a one-time fix and ongoing energy savings every hour it runs. | Reducing fan or blower speed by 20% cuts energy consumption by nearly 50% — that's the affinity law, not a marketing claim. A soft starter can't do that; it runs the motor at full speed once it's up. Danfoss VFDs optimize efficiency at partial load continuously, support all motor types, and integrate with existing PLC systems via standard fieldbus protocols. For variable-load blower applications, the ROI on a VFD over a soft starter is typically measured in months. | Your blower doesn't run at full load all the time — which is most blowers. If you're paying to run a motor faster than your process needs, a Danfoss VFD pays for itself. A soft starter is the right answer only when speed control has zero value and you just need to protect against startup inrush. |
We Hear These A Lot
| The Situation | What You Actually Need to Know | Why Danfoss |
|---|---|---|
| "My blower motor consumes too much power at partial load — would a VFD help?" | Yes, and probably more than you're expecting. If your blower is sized for peak demand but spends most of its time at 70-80% load, you're burning full power to do partial work. The affinity laws are unforgiving — a motor running at full speed on a light load wastes energy in a way that's easy to calculate and hard to justify once you see the numbers. | Danfoss VFDs are purpose-built for fan and blower applications — optimizing motor speed to match actual demand continuously. Reducing speed by 20% cuts energy use by nearly 50%. Danfoss can model the energy savings for your specific application before you buy. Centro can help size the right drive and walk through the payback period. |
| "I need to standardize VFDs across 3 plants — which brand has the best lifecycle cost?" | Standardization decisions are about more than purchase price — you're really deciding on a spare parts strategy, a training investment, and a commissioning process you'll repeat across every drive you install. A brand that's simpler to set up and has a focused product line saves real time and money across a multi-plant rollout compared to one where the drive is one product among hundreds. | Danfoss drives the same core platform across their product line — your techs learn it once and it applies everywhere. Simpler commissioning, consistent documentation, and a manufacturer whose entire business is drives means better lifecycle support than a conglomerate where drives are one division of many. Centro can support the rollout across all three facilities. |
| "We run a mix of AC induction and PM motors — which platform handles both?" | Mixed motor fleets are a real headache if you're trying to standardize on a single drive platform. Some drives handle AC induction fine but require a different model or configuration for permanent magnet or synchronous reluctance motors — which defeats the purpose of standardizing. You need a platform that covers all three without switching product families. | Danfoss offers platforms capable of controlling AC induction, permanent magnet, and synchronous reluctance motors from the same drive family — one platform, one spare parts inventory, one commissioning process regardless of what motor is on the other end. Contact Centro to confirm the right Danfoss series for your motor mix. |