Motor Control Solution – Control Techniques UNI3405 | Unidrive Series
The Emerson / Control Techniques UNI3405 is a high-performance 4.0 kW, 400 V AC Variable Speed Drive (VSD) from the renowned Unidrive platform. Engineered for demanding industrial environments, the UNI3405 delivers precise motor speed and torque control across a wide range of automation applications — from HVAC and water treatment to CNC machining and material handling.
Where This Product Is Used
The UNI3405 is specified by engineers across multiple industries for its reliability, flexibility, and seamless integration with modern control architectures:
- Pump & Water Treatment Plants – Variable-flow pump control for energy savings and pressure regulation
- HVAC Systems – Fan and blower speed modulation in commercial and industrial buildings
- Conveyor & Material Handling – Smooth start/stop and speed ramping for belt conveyors and sortation systems
- CNC Machining Centers – Spindle drive control requiring high dynamic response and torque accuracy
- Compressor Stations – Soft-start and energy-efficient operation of rotary screw compressors
- Packaging Machinery – Synchronized multi-axis motion in filling, sealing, and labeling lines
- Textile & Paper Mills – Tension control and winding/unwinding applications
- Oil & Gas Upstream – Submersible pump drives and wellhead automation panels
Technical Specifications
| Part Number | UNI3405 |
| Brand | Control Techniques (Emerson) |
| Series | Unidrive |
| Output Power | 4.0 kW (5.4 HP) |
| Input Voltage | 380–480 V AC, 3-Phase |
| Output Voltage | 0–480 V AC, 3-Phase |
| Output Frequency | 0–3000 Hz |
| Control Mode | Open Loop V/Hz, Closed Loop Vector, Servo |
| Enclosure Rating | IP20 (panel mount) |
| Communication | RS485 / Optional fieldbus modules (PROFIBUS, DeviceNet, CANopen) |
| Analog Inputs | 2 × ±10 V / 0–20 mA |
| Digital I/O | 6 Digital Inputs, 3 Digital Outputs |
| Relay Output | 1 × Programmable relay |
| Braking | Internal braking transistor (external resistor required) |
| Weight | 460 g |
| Ambient Temperature | 0°C to +40°C (derate above 40°C) |
| Storage Temperature | -40°C to +60°C |
| Humidity | 5–95% RH, non-condensing |
| Altitude | Up to 1000 m (derate above) |
Why Engineers Specify This Model
- Universal Motor Compatibility – Supports induction, PM, and servo motors from a single drive platform
- High Dynamic Performance – Fast torque response suitable for closed-loop servo and vector applications
- Fieldbus Flexibility – Optional plug-in communication modules for PROFIBUS-DP, DeviceNet, CANopen, and EtherCAT
- Compact Footprint – Space-efficient panel-mount design reduces cabinet size
- Integrated PLC Functionality – Onboard programmable logic via Control Techniques’ CODESYS-compatible environment
- Safe Torque Off (STO) – Built-in SIL2/PLd safety function for machinery directive compliance
- Energy Optimization – Auto-tuning and flux optimization reduce motor losses at partial load
Complete System Bill of Materials
For a complete UNI3405-based drive system, engineers typically specify:
- UNI3405 – Main variable speed drive unit
- External braking resistor (application-dependent)
- Line reactor / EMC filter (for grid compliance)
- Fieldbus option module (e.g., SI-PROFIBUS, SI-DeviceNet)
- Remote keypad / HMI panel (optional)
- Shielded motor cable (recommended ≤ 50 m)
- Fuses / MCB rated per input current
- DIN rail mounting accessories
Compliance & Industry Standards
- CE Marked – EU Machinery Directive 2006/42/EC & Low Voltage Directive 2014/35/EU
- EMC Directive 2014/30/EU – Category C2 / C3 compliance
- UL / cUL Listed (where applicable)
- IEC 61800-5-1 – Adjustable speed electrical power drive systems safety
- IEC 61800-3 – EMC requirements for drive systems
- EN ISO 13849-1 / IEC 62061 – STO function rated SIL2 / PLd
Quality Assurance & Sourcing
- ✅ Genuine Part – Sourced from authorized distributors and verified supply chains
- ✅ Pre-shipment Testing – Each unit undergoes power-on functional verification before dispatch
- ✅ Traceability – Serial number and date code recorded for full audit trail
- ✅ Anti-counterfeit – Label authentication and hologram verification on all units
- ✅ Warranty – 12-month warranty against manufacturing defects
- ✅ Packaging – Original or equivalent ESD-safe packaging with foam protection
How to Source This Part
Konmask.com maintains stock of the Control Techniques UNI3405 for immediate dispatch. We serve OEM manufacturers, system integrators, MRO procurement teams, and plant maintenance engineers globally.
- 📦 In-Stock Orders – Same-day or next-business-day dispatch for stocked units
- 🔍 Cross-Reference – Need a compatible replacement? Contact us with your existing drive model
- 🚢 Global Shipping – DHL / FedEx / UPS express to 150+ countries
- 📋 Bulk & OEM Pricing – Volume discounts available for 5+ units; request a formal quotation
- 🔧 Technical Support – Pre-sales application engineering support available via email or phone
📧 Email: support@konmask.com | 📞 Phone/WhatsApp: +0086 19859288691
Application-Specific FAQ
Q: Can the UNI3405 control a permanent magnet (PM) motor?
A: Yes. The Unidrive platform supports open-loop and closed-loop control of PM motors, including those with EnDat or SinCos encoders.
Q: Is the UNI3405 suitable for hazardous area installations?
A: The UNI3405 itself is IP20 rated for standard panel mounting. For hazardous areas, it must be installed in a certified Ex-rated enclosure with appropriate cable glands and barriers.
Q: What fieldbus does the UNI3405 support natively?
A: The drive includes RS485 (Modbus RTU) as standard. PROFIBUS-DP, DeviceNet, CANopen, and EtherCAT are available via plug-in option modules.
Q: Can I use the UNI3405 as a replacement for an older Unidrive Classic or SP model?
A: In many cases yes, with parameter remapping. Contact our technical team for a compatibility assessment before ordering.
Q: What is the minimum order quantity?
A: We supply single units as well as bulk orders. No minimum order quantity applies for standard stock items.
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Contact: support@konmask.com | +0086 19859288691
