SP2401 vs UNI2401: Complete Comparison Between Two Leading Control Techniques Drives

When it comes to motor control in industrial automation, Control Techniques offers some of the most trusted variable frequency drives (VFDs) on the market. Two of their most widely used models — the SP2401 (Unidrive SP) and UNI2401 (Unidrive UNI) — are often considered for applications ranging from precision servo control to general VFD applications.

In this post, we provide a comprehensive, expert-led comparison between these two models. Whether you're an automation engineer, OEM buyer, or maintenance manager, this guide will help you choose the best option for your setup.

🔍 Overview: SP2401 vs UNI2401 Technical Comparison

🆚 Key Differences – What Sets Them Apart?

🧠 Architecture & Processing

• SP2401 uses older DSP-based architecture, reliable but less efficient in complex modern systems.

• UNI2401 features updated high-speed processors that improve response time and allow for faster servo positioning.

⚙️ Expandability

• SP2401 supports multiple plug-in option modules, making it flexible but potentially more complex to integrate.

• UNI2401 integrates many features directly, simplifying installation and reducing footprint.

💡 Interface & Usability

• SP2401 has a more modular HMI and keypad structure.

• UNI2401 offers an improved user interface, often pre-configured for faster commissioning.

🔄 Lifecycle & Long-Term Support

• SP2401 is part of the legacy product family, still supported but not recommended for new designs.

• UNI2401 is active in production, with longer lifecycle support from Nidec / Control Techniques.

🔧 Installation & Maintenance

Both models are panel-mounted and require standard 3-phase wiring. The UNI2401 is generally faster to commission due to fewer external modules and improved parameter structures. Maintenance is easier on UNI2401 thanks to built-in diagnostics and USB support.

🛠️ Typical Applications

✅ Expert Recommendation

At DDPARTS SOLUTION, we recommend the UNI2401 for:

• New installations requiring high-speed performance

• Space-saving control panels

• Long-term manufacturer support

We recommend the SP2401 when:

• You're replacing a failed unit in an existing Unidrive SP setup

• Modular expansion is required with specific legacy configurations

📦 Availability at DDPARTS SOLUTION

We stock both SP2401 and UNI2401 drives (new and refurbished), ready for worldwide shipping. Each unit is tested and guaranteed. Need help fast? We offer quote within 48h and custom sourcing for discontinued models.

❓ FAQ – SP2401 vs UNI2401

Q1: Can I upgrade from SP2401 to UNI2401 without changing the panel layout?
Not directly. While similar in size, wiring terminals and module locations may differ. A panel redesign may be required.

Q2: Are both drives programmable with the same software?
No. SP2401 uses SyPTPro, while UNI2401 uses CTSoft and Connect. Migration tools are available but not seamless.

Q3: Which one is better for servo applications?
UNI2401 is more suitable for high-speed, precise servo control due to improved algorithms and faster processing.

Q4: Are these models still supported by the manufacturer?
Yes. SP2401 is supported as a legacy model. UNI2401 is active with ongoing updates and long-term part availability.

Q5: Do you offer global delivery and warranty?
Yes. At DDPARTS SOLUTION, we ship globally and provide up to 1-year warranty on all products.

📞 Ready to Order?

Visit ddpartssolution.com to request a quote or chat with a specialist. We can help you:

• Find the right VFD model

• Replace a discontinued drive

• Ship globally within 48 hours