Emerson UNI3404 AC Variable Speed Drive – Control Techniques Unidrive Series
When a variable speed drive fails on the production floor, the consequences are immediate and costly: conveyor lines halt, motors run uncontrolled, and entire manufacturing cells go dark. Downtime in industrial automation is not just an inconvenience — it translates directly into lost output, missed delivery windows, and emergency maintenance costs. The Emerson UNI3404 is engineered to eliminate exactly this risk, delivering reliable, precision motor control that keeps critical processes running without interruption.
The UNI3404 occupies a well-established position within the Control Techniques Unidrive series — one of the most widely deployed AC drive platforms in global industrial automation. Recognized for its robust closed-loop vector control capability and broad application flexibility, the Unidrive series has earned the trust of OEMs and system integrators across manufacturing, material handling, HVAC, and process industries worldwide. The UNI3404 specifically is valued for its balance of power density and control precision, making it a preferred choice for demanding motion applications.
Technical Specifications
- Model / SKU: UNI3404
- Brand: Emerson / Control Techniques
- Series: Unidrive
- Drive Type: AC Variable Speed Drive (VSD / VFD)
- Control Mode: Open-loop and closed-loop vector control
- Weight: 460 g
- Condition: New / Surplus / Refurbished (specify on inquiry)
Note: Detailed electrical specifications (voltage, current rating, power range) are confirmed upon inquiry. We do not publish unverified parameters.
Key Features & Benefits
- Precision Vector Control: Supports both open-loop and closed-loop operation for accurate speed and torque regulation across a wide dynamic range.
- Robust Industrial Design: Built to withstand demanding industrial environments with proven reliability in continuous-duty applications.
- Flexible I/O Configuration: Comprehensive digital and analog I/O options enable seamless integration into existing control architectures.
- Fieldbus Compatibility: Compatible with major industrial communication protocols, supporting integration into PLC and DCS systems.
- Compact Form Factor: Optimized footprint for panel-mount installations where space is at a premium.
- Energy Efficiency: Advanced PWM control algorithms reduce motor losses and improve overall system energy performance.
Industry & Equipment Applications
- Manufacturing & Assembly Lines: Conveyor drives, rotary tables, and servo-like positioning tasks.
- Material Handling: Hoists, cranes, and automated storage and retrieval systems (ASRS).
- HVAC & Building Automation: Fan and pump control for energy-efficient building management.
- Food & Beverage Processing: Hygienic-area conveyor and mixer drive applications.
- Water & Wastewater Treatment: Pump station variable-flow control.
- Packaging Machinery: High-cycle indexing and wrapping machine drives.
System Integration & Compatible Parts
The Emerson UNI3404 is designed for integration within Control Techniques Unidrive system architectures. Compatible components typically include:
- Control Techniques Unidrive option modules (fieldbus, encoder, I/O expansion)
- Compatible braking resistors and dynamic braking units
- EMC line filters and input chokes for CE-compliant installations
- Matching motor feedback encoders (incremental and absolute)
Contact our technical team to confirm compatibility with your specific system configuration before ordering.
Our Quality Assurance Process
- Source Verification: All units are sourced from authorized distributors or verified surplus channels with full traceability.
- Visual & Functional Inspection: Each unit undergoes physical inspection for damage, corrosion, and component integrity.
- Documentation: Original manufacturer documentation and certificates of conformity provided where available.
- Secure Packaging: Anti-static and shock-resistant packaging for safe international transit.
How to Order
- Submit an inquiry via the Contact Us form or email support@konmask.com.
- Provide your required quantity, preferred condition (new/surplus/refurbished), and delivery timeline.
- Our team will respond within 24 hours with availability, lead time, and a formal quotation.
- Upon agreement, we issue a proforma invoice and arrange secure shipment with full tracking.
Why Choose Konmask.com?
- Industrial Automation Specialists: Focused exclusively on PLC, DCS, drives, and automation components — not a generalist marketplace.
- Global Supply Network: Access to hard-to-find and obsolete parts through our verified supplier network.
- Technical Pre-Sales Support: Engineers available to assist with compatibility checks and application questions.
- Competitive Lead Times: Efficient logistics for both urgent replacement and planned procurement needs.
- Trusted by Industry: Serving OEMs, system integrators, and MRO teams across manufacturing sectors worldwide.
Frequently Asked Questions
- Q: Is the Emerson UNI3404 still in production?
- A: The Control Techniques Unidrive series has evolved over multiple generations. Please contact us to confirm current availability and whether a direct replacement or equivalent model is recommended for your application.
- Q: Can you supply the UNI3404 with a warranty?
- A: Yes. Warranty terms vary by unit condition (new, surplus, or refurbished). Details are provided in the formal quotation.
- Q: Do you ship internationally?
- A: Yes. We ship globally with full export documentation. Contact us for shipping options to your destination.
- Q: What information do I need to provide when inquiring?
- A: Please provide the full model number (UNI3404), required quantity, preferred condition, and your target delivery date. Any existing system documentation is also helpful for compatibility verification.
- Q: Can you help identify compatible replacement drives?
- A: Absolutely. Our technical team can recommend compatible Emerson / Control Techniques alternatives if the UNI3404 is unavailable or if an upgraded model better suits your application.
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