RESOLVER R11W-F10/7-2 – Precision Rotary Transformer | Resolver Series Platform
Engineering Background
The RESOLVER R11W-F10/7-2 is a precision rotary transformer (resolver) designed for demanding industrial position-sensing and motion-control applications. Resolvers of this class operate on the principle of electromagnetic induction, converting shaft angle into analog sine/cosine voltage signals with no digital conversion loss — making them the preferred choice in high-reliability, high-temperature, and high-vibration environments where optical encoders are unsuitable.
Product Positioning
This unit targets servo drive systems, CNC machine tools, robotics joints, and aerospace actuation platforms where absolute angular position feedback is mandatory. The R11W-F10/7-2 designation encodes the resolver’s winding ratio, pole configuration, and mechanical envelope, ensuring direct drop-in compatibility with legacy and current-generation RESOLVER-series servo amplifiers. Konmask.com supplies this component as a verified OEM part, sourced through authorized industrial distribution channels, with full traceability documentation available on request.
Complete Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | R11W-F10/7-2 |
| Brand / Manufacturer | RESOLVER |
| Component Type | Rotary Transformer (Resolver) |
| Transformation Ratio | F10/7-2 (encoded winding ratio) |
| Output Signal | Sine / Cosine analog voltage |
| Excitation Frequency | Typically 2–10 kHz (application-dependent) |
| Operating Temperature | −40 °C to +155 °C (Class F insulation) |
| Mechanical Weight | 1,700 g |
| Mounting Interface | Flange-mount, per RESOLVER series standard |
| Protection Class | IP54 (standard); IP65 available on request |
| Insulation Class | Class F (155 °C) |
| Shaft Configuration | Solid shaft, keyed |
| Electrical Connection | Multi-pin connector, RESOLVER standard pinout |
| Country of Origin | Confirm with datasheet at time of order |
Note: Full datasheet with dimensional drawings available upon request. Contact support@konmask.com.
Proven Application Environments
- CNC Machine Tools – Spindle and axis position feedback in turning centers, machining centers, and grinding machines
- Industrial Servo Drives – Closed-loop velocity and position control in AC/DC servo amplifier systems
- Robotics & Articulated Arms – Joint angle sensing in 6-axis industrial robots and SCARA platforms
- Aerospace Actuation – Flight control surface position sensing where MIL-spec reliability is required
- Heavy Industrial Machinery – Crane, press, and rolling mill drive systems with high vibration and contamination exposure
- Wind Turbine Pitch Control – Blade pitch angle feedback in variable-speed wind energy systems
Engineering Advantages
- Absolute Position Output – No battery backup or homing cycle required; position is known immediately on power-up
- EMI Immunity – Analog inductive output is inherently immune to digital noise, VFD switching transients, and RF interference
- Extreme Temperature Tolerance – Class F insulation supports continuous operation in foundry, forge, and outdoor environments
- Shock & Vibration Resistance – No optical disc or glass scale; fully solid-state magnetic construction
- Long Service Life – Brushless transformer design eliminates contact wear; MTBF exceeds 50,000 hours in typical installations
- Direct Compatibility – Drop-in replacement for RESOLVER R11W series in existing servo drive wiring harnesses
System Architecture & Signal Flow
The R11W-F10/7-2 operates as a two-speed or single-speed rotary transformer depending on drive configuration. The excitation winding (rotor) receives a sinusoidal reference voltage from the servo drive’s resolver excitation circuit. As the shaft rotates, the two stator windings produce amplitude-modulated sine and cosine output voltages proportional to shaft angle θ:
- V_sin = V_ref × K × sin(θ)
- V_cos = V_ref × K × cos(θ)
These signals are fed to the drive’s R/D (Resolver-to-Digital) converter, which computes absolute angular position and velocity. The transformation ratio F10/7-2 defines the turns ratio between rotor and stator windings, ensuring signal amplitude compatibility with standard RESOLVER-series drive input stages.
Sourcing & Quality Verification
- OEM Traceability – All units supplied with manufacturer lot codes and date codes; COC (Certificate of Conformance) available on request
- Anti-Counterfeit Inspection – Each unit inspected for label authenticity, connector integrity, and winding resistance before dispatch
- Storage Conditions – Maintained at 15–25 °C, RH < 60%, in ESD-safe packaging per IEC 61340-5-1
- Lead Time – In-stock units ship within 1–3 business days; ex-stock lead time quoted at order confirmation
- Warranty – 12-month warranty against manufacturing defects from date of shipment
Procurement Process
- Confirm Part Number – Verify R11W-F10/7-2 against your servo drive’s resolver specification sheet or existing unit nameplate
- Request Quotation – Contact support@konmask.com with quantity, required delivery date, and destination port
- Review Datasheet – We provide the full dimensional drawing and electrical datasheet before order confirmation
- Place Order – Purchase order accepted via email, Alibaba Trade Assurance, or direct Shopify checkout
- Shipment & Tracking – DHL / FedEx / SF Express with real-time tracking; export documentation (commercial invoice, packing list, COO) included
- Incoming Inspection Support – We provide winding resistance reference values and test procedure guidance for your incoming QC team
Technical FAQ
Q: Is the R11W-F10/7-2 compatible with my existing servo drive?
A: Compatibility depends on your drive’s resolver excitation voltage, frequency, and R/D converter input impedance. Share your drive model number and we will confirm compatibility before shipment.
Q: Can this resolver be used with a digital encoder interface?
A: Not directly. A resolver-to-digital (R/D) converter IC or module (e.g., AD2S1210) is required to interface with digital motion controllers. We can recommend compatible R/D modules.
Q: What is the electrical resistance of the stator windings?
A: Reference values are provided in the datasheet. Contact us for the specific test report for your lot.
Q: Do you supply the mating connector and cable assembly?
A: Yes, mating connectors and pre-terminated cable assemblies are available as accessories. Specify cable length and connector type at time of order.
Q: What is the minimum order quantity (MOQ)?
A: MOQ is 1 piece. Volume pricing is available for orders of 5 pieces or more.
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Contact: support@konmask.com | +0086 19859288691
