Siemens 6FX3002-5CK01-1CA0 is a pre-assembled power cable in the MOTION-CONNECT 300 connection system. Siemens specifies it as a 4-core power cable (4 × 0.75 mm²) intended for connecting a SIMOTICS S-1FL6 low-inertia (LI) motor to a SINAMICS V90 230 V servo drive (frame sizes A, B, C, D; up to 1 kW in the Siemens ordering text) with a fixed 20 m length and maximum outer diameter of 7.1 mm.
The point of a Siemens pre-assembled cable isn’t glamour. It’s control: defined conductor cross-section, verified materials, known mechanical limits, and factory assembly to reduce wiring variability. In production environments where downtime is expensive and commissioning time is limited, that consistency is often worth more than the cost difference versus “generic cable plus hand assembly.”
Product Identification and Ordering Data
| Item | Details |
|---|---|
| Manufacturer | Siemens |
| Order number (MLFB) | 6FX3002-5CK01-1CA0 |
| Cable family | MOTION-CONNECT 300 |
| Cable type | Pre-assembled power cable |
| Intended system pairing (ordering text) | SIMOTICS S-1FL6 LI motor to SINAMICS V90 230 V (FS A–D, 1 kW referenced) |
| Conductor configuration | 4 × 0.75 mm² |
| Length | 20.0 m |
| Max cable diameter | Dmax = 7.1 mm |
| Connector style | Straight connector (fixed cable outlet direction) |
Technical Specifications (Electrical and Mechanical)
| Category | Specification |
|---|---|
| Rated voltage (U0/U, EN 50395) | 300 V / 500 V (power conductors) |
| Test voltage (rms, power conductors) | 4000 V |
| Cable sheath material | PVC |
| Insulation type | PVC |
| Flame resistance standard | EN 60332-1-1 to 1-3 |
| Oil resistance | EN 60811-2-1 (mineral oil only) |
| Degree of protection | IP20 |
| Ambient temperature (permanently installed) | −25 … +80 °C |
| Smallest bending radius (flexible installation) | 155 mm |
| Smallest bending radius (fixed installation) | 6 × diameter |
| Maximum number of bends | 100,000 |
| Torsional stress | Absolute 30°/m |
| Tensile stress, max (flexible) | 50 N/mm² |
| Tensile stress, max (fixed) | 20 N/mm² |
| Suitability markings (datasheet) | UL approval: Yes; CE marking: Yes; RoHS conformity: Yes |
What This Cable Does in a SINAMICS V90 + S-1FL6 Axis
In the V90 + S-1FL6 architecture, the motor power cable is responsible for delivering controlled energy from the servo drive to the motor phases. That sounds obvious, but the practical demands are non-trivial:
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Current delivery with minimal voltage drop
Correct conductor cross-section matters for thermal performance and stable torque delivery, especially across longer runs. Siemens specifies this cable as 4 × 0.75 mm², which aligns with compact 230 V servo axes in the stated frame/size range. -
Noise and interference resilience
Power cabling lives near switching devices, contactors, and other noisy components. Using a cable designed as part of a system connection set reduces the risk that a marginal cable build will couple noise into nearby signal lines or cause EMC headaches. -
Mechanical survival in real routing
The difference between “works today” and “keeps working” is often mechanical: repeated bending, torsion, or a too-tight radius behind a cabinet door. Siemens provides concrete limits—155 mm minimum bending radius (flex), 6×D (fixed), 30°/m torsional stress, and 100,000 max bends—so engineers can design routing that doesn’t quietly destroy the cable over time.
Why Pre-Assembled Matters (Especially for B2B Buyers and Maintenance Teams)
Reduced commissioning risk
A pre-assembled Siemens cable is built to a known pinout and connector format, which reduces the chance of wiring mistakes, poor crimp quality, or inconsistent strain relief. In motion systems, one bad termination can cause heat build-up, nuisance trips, or intermittent behavior that wastes days.
Faster service replacement
In real factories, failures are fixed under time pressure. A known MLFB cable lets maintenance swap parts quickly without re-terminating conductors on site.
Predictable compliance posture
The technical datasheet indicates UL approval, CE marking, and RoHS conformity for suitability. For many projects, having an identifiable Siemens part with declared suitability simplifies documentation compared with “equivalent” third-party cable assemblies.
Typical Application Scenarios
| Scenario | Why 6FX3002-5CK01-1CA0 fits |
|---|---|
| Compact machines using SINAMICS V90 230 V with S-1FL6 LI motors | Siemens explicitly positions the cable for this pairing in ordering data |
| Long motor-to-cabinet distances up to 20 m | Fixed 20 m length supports cabinet placement flexibility |
| Standardized OEM builds needing repeatable wiring quality | Pre-assembled construction reduces variability in assembly outcomes |
| Maintenance spare strategy | A known Siemens MLFB speeds procurement and replacement |
Installation Guidance That Prevents “Random” Servo Faults
| Practical rule | Grounded reason (from published limits) |
|---|---|
| Do not exceed bend radius during routing | Flexible minimum is 155 mm, fixed is 6× diameter; tighter bends accelerate conductor fatigue |
| Avoid twisting the cable during installation | Torsional stress is specified as 30°/m; exceeding it can damage internal conductors over time |
| Treat bend-cycle life as a real constraint | 100,000 bends is not infinite; high-cycle drag-chain routing may require different cable strategies |
| Keep power and sensitive signal cables separated | Reduces EMI coupling; especially relevant in servo cabinets where switching edges are fast |
| Confirm enclosure suitability | IP20 implies protected installation (typically inside cabinets), not exposed environments |
Summary
Siemens 6FX3002-5CK01-1CA0 is a MOTION-CONNECT 300 pre-assembled power cable specified as 4 × 0.75 mm², 20 m length, Dmax 7.1 mm, designed for connecting SIMOTICS S-1FL6 LI motors to SINAMICS V90 230 V servo drives (frame sizes A–D referenced in the ordering text).
