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Product

Resolver feedback drag-chain cableIndividual + Overall ScreenSin/Cos/Ref + ThermalDESINA RAL 6018

Resolver Feedback CableIndividually pair-screened + overall braided PUR resolver feedback cable

Precision analogue resolver feedback cable with individually copper-screened twisted pairs — e.g. 3×(2×0.14)C + (2×0.5)C — for carrier excitation (Ref+/Ref−), Sin/Cos quadrature outputs and stator PTC/KTY84 thermal sensing in high-acceleration drag chains.

Low-EMC design
EMC screen
Oil-resistant
Flame-retardant
Order designation
RES-FD-CP 3×(2×0.14)C+(2×0.5)C
Outer Ø ≈
8.9 mm
Total copper
64 kg/km
Total weight ≈
112 kg/km
Min. bend R (chain)
67 mm
Check against my drumAll sizes (12)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Rated voltage
300 V (UL)
VDE 350 V peak · test 1.5 kV AC
Pair screening
Individual + All
tinned Cu spiral/braid per pair
Pair capacitance
≈ 45 pF/m
matched Sin/Cos phase symmetry
Bend radius
7.5 × OD
moving in chain · 4 × OD fixed
Temperature
−40…+80 °C
moving · −50…+80 °C fixed
Outer sheath
PUR (RAL 6018)
DESINA green · halogen-free

Typical values for this cable type, based on DIN VDE 0812 / UL AWM Style 20236 — confirmed in the datasheet and quotation for your order.

Application fit

Is Resolver Feedback Cable right for your machine?

Built for brushless rotary resolvers and stator temperature sensors on servo motors operating in high-vibration, high-EMI machine-tool energy chains.

Energy chain / drag chain

Suitable

Torsion-free helical pair screens and overall tinned copper braid withstand ≥ 8 million drag-chain cycles at 7.5 × OD.

Fixed installation

Suitable

Direct installation from servo drive cabinet to machine bulkhead with 360° EMC shield clamping.

Festoon & line chain

Suitable

Suitable for C-rail loop festoons on metallurgical, press and crane drives using rugged resolver feedback.

VFD inverter to AC motor screened feeder

Not suitable

Analogue resolver & thermistor signal cable only; use Shielded Servo Motor Power Cable for 0.6/1 kV motor power.

Use Shielded Servo Motor Power Cable
Typical machinesHeavy-Duty CNC & Press ServosInjection Moulding Clamping AxesMetallurgical & Rolling Mill DrivesAutomated Welding & Stamping LinesGantry & Transfer Line Actuators

Construction

Layer by layer

Shown: 3×(2×0.14)C + (2×0.5)C resolver cable with three individually copper-screened 0.14 mm² pairs (Ref, Sin, Cos), one individually screened 0.5 mm² KTY/PTC thermal pair, and overall tinned copper braid.

123456
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Quadrature & thermal conductorsSuperfine stranded bare/tinned copper (0.14–0.38 mm² resolver pairs + 0.5–1.0 mm² thermal/excitation pair)IEC 60228 Class 6
2Low-loss PP core insulationPolypropylene (PP / cellular PE) with matched dielectric thickness across Sin and Cos pairsEnsures identical R-C phase shift on Sin and Cos channels
3Individual pair copper screen (C)Helical tinned copper wire spiral/braid screen (≥ 85 % coverage) over each twisted pairPrevents 4–10 kHz excitation cross-talk into Sin/Cos and isolates stator PTC pair
4PTFE / non-woven sliding wrapLow-friction wrapping over laid-up screened pairsDecouples pair screens from outer braid during 50 m/s² flexing
5Overall EMC braid screenTinned copper wire braid (≥ 85 % optical coverage) over complete core assemblyExternal PWM noise rejection
6Outer motion jacketHalogen-free polyurethane (TMPU), DESINA green RAL 6018DIN EN 50363-10-2 · oil, coolant & abrasion resistant

3×(2×0.14/0.25)C + (2×0.5)C

Three individually screened pairs for Ref+/Ref−, Sin+/Sin−, Cos+/Cos− plus one individually screened 0.5 mm² pair for KTY84/PTC stator sensor

4×2×0.25 + 2×0.5/1.0 (TP)

Differential twisted-pair resolver layout with calibrated differential lay lengths and overall tinned copper braid

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on DIN VDE 0812 / UL AWM Style 20236. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage U0/U
300 V (UL AWM) · 350 V peak (VDE)
AC test voltage
1500 V AC core/core · 1000 V AC core/screen
Screen / Field control
Individual tinned Cu pair screens + overall Cu braid
Capacitance
≈ 45 pF/m (core/core) · ≤ 2 pF/m Sin/Cos skew
Near-end cross-talk (NEXT)
≥ 65 dB at 10 kHz–1 MHz between screened pairs

Thermal

Temperature, flexing
−40 °C to +80 °C
Temperature, fixed installation
−50 °C to +80 °C
Max. conductor temperature
+80 °C

Mechanical

Min. bending radius, moving
7.5 × OD in energy chain
Min. bending radius, fixed
4 × OD
Max. travel speed
5 m/s gliding · 10 m/s unsupported
Max. acceleration
Up to 50 m/s²

Resistance

Oil resistance
DIN EN 50363-10-2 · UL Oil Res I & II
Flame retardance
IEC 60332-1-2 · UL 1581 FT1 / VW-1
Halogen-free / Smoke density
IEC 60754-1/2 halogen-free PUR
Hydrolysis & microbes
Hydrolysis-resistant polyether PUR (EN ISO 846)

Reference standards

Cable type (construction standard)
Siemens 6FX8008-1BD21 / Bosch Rexroth / Lenze spec
Conductor
IEC 60228 Class 6 superfine copper
Product approvals
UL AWM Style 20236 / 20233 · CSA AWM
RoHS & REACH
2011/65/EU (RoHS 2) & EC 1907/2006 compliant

Identification

Sheath colour
Green (RAL 6018 per DESINA measuring systems)
Core identification
DIN 47100 / OEM pair colour coding
Marking
TEBAOFLEX RES-FD-CP <size> DESINA GREEN 300V UL CE
Customs tariff (HS)
8544.49

Sizes

12 standard resolver feedback configurations

Individually pair-screened (C) and differential twisted-pair (TP) resolver cables for 4–10 kHz carrier resolver systems.

Dimensions & weights
Order designationConfigurationResolver system architectureOuter Ø ≈
mm		Total Cu
kg/km		Weight ≈
kg/km		Min. bend R
chain mm		Enquiry
Individually Pair-Screened + Overall Braided (C) Resolver Cables
RES-FD-CP 3×(2×0.14)C+(2×0.5)C3×(2×0.14)C + (2×0.5)CStandard 3-Pair Resolver + PTC/KTY8.96411267
RES-FD-CP 3×(2×0.14)C+(3×0.14)C3×(2×0.14)C + (3×0.14)CResolver + 3-Wire PT100/KTY Sensor8.65610264
RES-FD-CP 4×(2×0.14)C+(2×0.5)C4×(2×0.14)C + (2×0.5)CDual-Speed Resolver + Thermal Pair9.87813474
RES-FD-CP 3×(2×0.25)C+(2×0.5)C3×(2×0.25)C + (2×0.5)CLong-Run 0.25 mm² Resolver + Thermal9.98213874
RES-FD-CP 3×(2×0.25)C+(2×1.0)C3×(2×0.25)C + (2×1.0)CHeavy-Duty Resolver + 1.0 mm² Supply10.69615880
RES-FD-CP 2×(2×0.25)C+(2×0.5)C2×(2×0.25)C + (2×0.5)C2-Pair Resolver + Excitation Supply8.76611465
RES-FD-CP 4×(2×0.25)C4×(2×0.25)C4-Pair Individually Screened Resolver9.57612871
RES-FD-CP 5×(2×0.25)C5×(2×0.25)C5-Pair Multi-Turn Resolver Array10.49215278
RES-FD-CP 3×(2×0.14)C+2×(0.5)C3×(2×0.14)C + 2×(0.5)CSiemens 6FX8008-1BD21 Compatible9.26911869
Differential Twisted-Pair Overall Braided (TP) Resolver Cables
RES-FD-TP 4×2×0.25+2×0.54×2×0.25 + 2×0.5Bosch Rexroth / SEW Resolver TP8.3519462
RES-FD-TP 4×2×0.25+2×1.04×2×0.25 + 2×1.0Extended-Distance Resolver TP8.85810666
RES-FD-TP 4×2×0.38+4×0.54×2×0.38 + 4×0.5Low-Attenuation Resolver > 50 m9.77413073
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • For resolver cable runs exceeding 35 m, step up from 0.14 mm² to 0.25 mm² or 0.38 mm² pairs to minimise carrier amplitude attenuation.

Reel check

Will it fit your machine?

A first screen using datasheet values. Engineering confirms drum geometry, acceleration and tension with your quotation.

Check results

Drum core 100 mm is below 134 mmUse a larger drum core or a smaller cable size
240 m/min ≤ 300 m/minWithin the rated travel speed
Minimum bending radius
67 mm
Min. drum core diameter
≈ 134 mm
Cable weight on drum
1.7 kg
Copper content
1.0 kg
Indicative only: based on the datasheet outer diameter and 7.5 × OD bending radius. Current derating for wound layers per DIN VDE 0298-4 is assessed separately.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
Core-to-core & pair-screen AC dielectric test1500 V AC core/core · 1000 V AC core/screen for 5 minEvery manufactured length
Sin/Cos pair capacitance & resistance symmetry checkPair capacitance mismatch ≤ 2 pF/m between Sin and Cos pairsEvery drum length
Sample tests
Near-end cross-talk (NEXT) & chain enduranceNEXT ≥ 65 dB at 10 kHz after 8 million carrier cycles at 7.5 × ODPeriodic factory audit
Halogen-free & oil-resistance testPass IEC 60754-1/2 and DIN EN 50363-10-2 TMPU oil immersionType approval

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

CE & RoHS 2 / REACH CompliantUL AWM Style 20236 / 20233 (80 °C 30 V / 300 V)DESINA Measuring-System Green (RAL 6018)

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX RES-FD-CP <size> DESINA GREEN AWM 20233 80C 300V CE
Delivery form
Non-returnable fumigated wooden drums or coils
Standard lengths
100 m · 500 m · 1000 m (cut lengths on request)
MOQ
100 m (stock sizes) · 300 m (custom)
Lead time
2–3 weeks ex-works
Incoterms
EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFResolver Feedback Cable – technical datasheet12 sizes · construction, technical data, approvalsXLSXResolver Feedback Cable spec data (Excel)All 12 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

Why does a Resolver Feedback Cable require individually screened pairs — such as 3×(2×0.14)C + (2×0.5)C?
A brushless resolver is an analogue rotary transformer excited by a 4 to 10 kHz AC reference voltage (typically 7 V rms on R1/R2) that induces ratiometric voltages in the Sine (S1/S3) and Cosine (S2/S4) stator windings. Any capacitive cross-talk from the excitation pair or the stator thermal sensor pair (KTY84/PTC) into the millivolt-level Sin/Cos pairs introduces a false angular offset in the drive's resolver-to-digital (R/D) converter. Individual copper screens around each pair eliminate inter-pair coupling.
Why must the Sine and Cosine pairs have matched capacitance and loop resistance?
The servo drive determines rotor angle θ from the ratio arctan(V_sin / V_cos). If the Sine and Cosine pairs have different capacitances or loop resistances, they form unequal R-C low-pass filters over long cable runs, attenuating or phase-shifting one channel relative to the other and causing periodic velocity ripple.
Why is the stator temperature sensor pair (0.5 mm²) also individually screened?
The PTC thermistor or KTY84 silicon temperature sensor is embedded directly inside the 400 V / 690 V stator windings of the servo motor. Capacitive spikes from the stator windings couple onto the sensor leads; screening the (2×0.5)C pair prevents that PWM noise from radiating into the adjacent Sin/Cos resolver pairs inside the feedback cable.
When should I step up from 0.14 mm² resolver pairs to 0.25 mm² or 0.38 mm²?
Standard 0.14 mm² (AWG 26) resolver cables are suitable for cable lengths up to 30–35 m. For drag-chain or gantry runs from 35 m up to 100 m, step up to 3×(2×0.25)C or 4×2×0.38 so series loop resistance does not drop the 7 V rms excitation carrier below the R/D converter threshold.

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Resolver Feedback Cable

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