Lenze MDFKARS080-22 Servo Motor – Precise, compact motion for reliable machine axes

The Lenze MDFKARS080-22 is a synchronous AC servo motor built around an 80 mm frame, typically supplied with robust resolver (RS) feedback. From my experience, this size hits a sweet spot for packaging lines, compact indexing tables, and light pick-and-place axes where smooth torque and tight position control matter. You might notice that the “RS” in the model points to the resolver feedback option—great for high-temperature or high-vibration environments compared with some encoder types.

Order Placement Process and Guarantees

Key Features

• 80 mm servo platform – Compact footprint with a favorable torque-to-size ratio for space-limited cabinets and machines.
• Resolver (RS) feedback – Rugged feedback option that typically handles heat and vibration better than many encoder types.
• Synchronous AC design – Low cogging and smooth speed control for stable positioning and consistent surface finish.
• Protection up to IP65 (with shaft seal) – In many cases suitable for dust-prone shop floors and light washdown around the housing.
• Thermal protection built-in – PTC/thermal sensor helps the drive protect the motor during overload events.
• Lenze drive ecosystem compatibility – Commonly paired with Lenze 9400, 8400 TopLine, or i700 servo inverters for quick commissioning.
• Optional holding brake – Often available for vertical axes or safety positioning (confirm variant and brake voltage).

Technical Specifications

Related or Supporting Products

• Lenze 9400 HighLine (E94AS…) – High-performance servo drive; excellent with resolver feedback; richer motion functions.
• Lenze 8400 TopLine (E84…TL…) – Cost-effective servo inverter for dynamic positioning tasks; good fit for size 80 motors.
• Lenze i700 (E94… i700) – Modular multi-axis servo system; ideal when several MDFK/MCS axes share a DC bus.
• Lenze MCS08 series – Modern servo motor family in the same size class; supports newer encoder systems (e.g., Hiperface DSL) if you’re migrating from resolver.
• Pre-assembled power & feedback cables – Lenze-specific power and resolver cable sets to simplify installation and reduce EMI issues.
• Motor holding brake – Option for vertical axes; verify brake voltage and residual torque for your load case.

Customer note: “Swapping to an MDFKARS080-22 on our small cartoner cut our dwell variability. Startup was quick with the 9400 template—basically plug the resolver and tune.”

Installation & Maintenance

• Mounting & alignment – Use a rigid, machined surface; align couplings to avoid bearing loads. For gearboxes, follow the gearbox alignment tolerances.
• Cabinet & wiring – Route motor power and feedback cables separately; use shielded cables terminated 360° at the drive end. Maintain proper PE bonding.
• Ventilation – Ensure free air circulation around the motor; avoid covering the housing fins. Elevated ambient temps typically require de-rating.
• Brake (if equipped) – Use a dedicated brake relay/driver; verify correct release voltage. Check residual torque before safe-off procedures.
• Routine checks – Inspect connectors, seals, and cable strain relief quarterly. Clean dust from cooling surfaces with dry air; avoid solvents.
• Tuning & firmware – Keep the Lenze drive firmware up to date. A quick autotune (resolver phase alignment) usually improves responsiveness.
• Spares – Keep a resolver cable and shaft key on hand. In many cases, that’s what delays restarts rather than the motor itself.

Quality & Certifications

• CE compliant; RoHS conform
• UL/cUL recognition on many Lenze servo families (verify label for the exact listing)
• Manufactured under ISO 9001 quality systems
• Warranty: 365 days from delivery