LENZE EVF9331-EV – AC Inverter Servo Driver | EVF Series Platform
Engineering Background: The LENZE EVF9331-EV is a high-performance AC variable frequency drive (VFD) engineered within LENZE’s proven EVF Series platform. Designed and manufactured in Germany, this inverter servo driver delivers precise motor speed and torque control for demanding industrial automation environments. LENZE has been a global leader in drive technology for over 75 years, and the EVF9331-EV represents the culmination of that expertise in a compact, field-proven package.
Product Positioning: Targeted at OEM machine builders, system integrators, and MRO procurement engineers who require a reliable, specification-accurate AC drive for continuous-duty industrial applications. The EVF9331-EV is a direct-fit replacement and new-installation solution for conveyor systems, packaging machinery, pump/fan control, and multi-axis servo coordination tasks.
Complete Technical Specifications
- Model / SKU: EVF9331-EV
- Brand: LENZE
- Series: EVF Series (9300 Servo Inverter Family)
- Drive Type: AC Inverter / Servo Driver (Variable Frequency Drive)
- Country of Origin: Germany (DE)
- HS Code: 850440
- Control Mode: V/f control, Sensorless vector control, Servo vector control
- Input Supply: 3-phase AC (refer to nameplate for exact voltage/frequency rating)
- Output Frequency Range: 0 – 650 Hz (typical EVF9300 series)
- Protection Class: IP20 (standard enclosure)
- Communication Interface: Compatible with LECOM-A/B, CANopen, PROFIBUS-DP (module-dependent)
- Braking: Built-in DC braking; external braking resistor compatible
- Ambient Operating Temperature: 0 °C to +40 °C
- Storage Temperature: −25 °C to +55 °C
- Relative Humidity: ≤ 95 % RH, non-condensing
- Weight (approx.): 300 g
- Certifications: CE, UL (series-level)
Proven Application Environments
- Conveyor and material handling systems requiring precise speed regulation
- Packaging and labeling machinery with dynamic load profiles
- Pump and fan variable-speed control for energy savings
- Multi-axis servo coordination in CNC and robotic cells
- Textile, printing, and paper processing lines
- Crane and hoist applications with regenerative braking requirements
- Food and beverage processing equipment (with appropriate IP enclosure)
Engineering Advantages
- German Engineering Precision: Manufactured to LENZE’s stringent quality standards with full CE compliance.
- EVF 9300 Platform Maturity: Decades of field deployment across global industrial installations ensure proven reliability and extensive third-party documentation.
- Flexible Control Architecture: Supports V/f, sensorless vector, and closed-loop servo vector modes — one drive for multiple application profiles.
- Wide Fieldbus Compatibility: Native support for CANopen and PROFIBUS-DP via plug-in communication modules, enabling seamless PLC/DCS integration.
- Compact Form Factor: Space-efficient design reduces panel footprint without compromising power density.
- Extensive Diagnostic Tools: Integrated keypad display and LENZE Engineer software for parameter management, fault logging, and commissioning.
System Architecture & Signal Flow
The EVF9331-EV operates on a standard AC-DC-AC conversion topology. Incoming three-phase AC is rectified to a stable DC bus, then inverted via IGBT switching to produce a variable-frequency, variable-voltage output to the connected motor. The control board processes speed/torque reference signals from analog inputs (0–10 V / 4–20 mA), digital I/O, or fieldbus commands, executing real-time closed-loop regulation. The drive’s parameter set is fully accessible via the front-panel keypad or remotely through LENZE Engineer PC software over RS-232/RS-485 or USB interface.
Sourcing & Quality Verification
- Authenticity: All units sourced through verified industrial supply channels. Serial numbers traceable to LENZE production records.
- Condition: New-in-box (NIB) or factory-refurbished stock clearly labeled at time of order confirmation.
- Inspection: Each unit undergoes incoming inspection including visual check, label verification, and functional power-on test where applicable.
- Warranty: 12-month Konmask operational warranty against manufacturing defects; extended coverage available on request.
- Documentation: LENZE EVF9331-EV datasheet and wiring diagram available upon request with order.
Procurement Process
- Inquiry: Submit your RFQ via the product page or email support@konmask.com with quantity and required delivery date.
- Quotation: Receive a formal quotation within 1 business day including unit price, lead time, and shipping options.
- Order Confirmation: Purchase order accepted via Shopify checkout, bank transfer (T/T), or PayPal.
- Shipping: DHL Express / FedEx International Priority standard; sea freight available for bulk orders. Export documentation (commercial invoice, packing list, CO) provided.
- After-Sales: Technical support available via email and WhatsApp for commissioning assistance.
Technical FAQ
Q: Is the EVF9331-EV compatible with third-party motors?
A: Yes. The EVF9331-EV supports standard asynchronous induction motors and permanent magnet servo motors. Motor parameters must be entered during commissioning via the parameter set (P100–P130 range).
Q: What fieldbus modules are compatible?
A: The EVF9300 series accepts plug-in communication modules for CANopen (E82ZAFCC), PROFIBUS-DP (E82ZAFPB), and LECOM-A/B. Module compatibility should be confirmed against the specific firmware version.
Q: Can I use an external braking resistor?
A: Yes. The EVF9331-EV includes terminals for an external braking resistor. Resistor sizing should follow LENZE’s application guidelines based on duty cycle and motor inertia.
Q: What is the lead time for this model?
A: In-stock units ship within 1–3 business days. Out-of-stock orders typically have a 2–4 week lead time depending on global supply. Contact us for real-time availability.
Q: Do you provide a Certificate of Origin?
A: Yes. A Certificate of Origin (Germany) is available for all export orders upon request.
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