SIEMENS 6FX2001-3EC50 – Encoder Feedback Signal Cable | SINUMERIK / SIMODRIVE Platform
Engineering Background
The SIEMENS 6FX2001-3EC50 is a factory-engineered encoder feedback signal cable designed for precision motion control within the SINUMERIK CNC and SIMODRIVE servo drive ecosystems. Built to Siemens’ stringent EMC and mechanical specifications, this cable ensures reliable, noise-immune transmission of encoder position data between servo motors and drive controllers in demanding industrial environments.
Product Positioning
Targeted at OEM machine builders, CNC retrofit engineers, and MRO procurement teams, the 6FX2001-3EC50 is the factory-recommended replacement cable for SIMODRIVE 611 and SINUMERIK 840D/828D axis configurations. It eliminates field-wiring errors and guarantees signal integrity at high encoder resolutions.
Complete Technical Specifications
- Part Number (SKU): 6FX2001-3EC50
- Manufacturer: SIEMENS AG
- Series / Platform: SINUMERIK / SIMODRIVE
- Cable Type: Encoder Feedback Signal Cable (pre-assembled)
- Connector Interface: Compatible with SIMODRIVE 611 / SINUMERIK 840D / 828D encoder interfaces
- Shielding: Double-shielded (foil + braid) for superior EMC immunity
- Conductor Material: Stranded copper, tinned
- Insulation: PVC / PUR outer jacket (oil- and flex-resistant)
- Operating Temperature: –20 °C to +80 °C (static); –10 °C to +70 °C (dynamic)
- Gross Weight: 5,200 g
- Country of Origin: Germany
- Compliance: CE, RoHS
Proven Application Environments
- CNC machining centers (milling, turning, grinding) with SINUMERIK 840D sl / 828D
- SIMODRIVE 611 universal servo drive axis feedback loops
- Retrofit and modernization projects replacing legacy Siemens cable assemblies
- High-cycle automated production lines requiring repeatable positioning accuracy
- Harsh environments: coolant splash, vibration, and continuous flex cable routing
Engineering Advantages
- OEM-Exact Fit: Factory-terminated connectors eliminate pin-out errors and reduce commissioning time
- EMC-Optimized Shielding: Double-shield construction suppresses encoder signal noise at high resolutions (≥2048 ppr)
- Mechanical Durability: Oil-resistant PUR jacket rated for continuous flex in cable carrier (energy chain) applications
- Plug-and-Play Replacement: Direct drop-in for existing 6FX2001-3EC50 installations — no re-parameterization required
- Traceability: Siemens batch coding on cable jacket for quality audit compliance
System Architecture & Signal Flow
The 6FX2001-3EC50 connects the incremental/absolute encoder mounted on the servo motor shaft to the encoder evaluation board within the SIMODRIVE 611 or SINUMERIK NCU. Signal flow: Motor Encoder → 6FX2001-3EC50 Cable → Drive Encoder Input (X411/X412). The double-shielded construction maintains signal integrity across cable runs up to the Siemens-specified maximum length, preserving position feedback accuracy critical for closed-loop velocity and position control.
Sourcing & Quality Verification
- All units sourced through authorized Siemens distribution channels or verified OEM surplus with full traceability
- Pre-shipment inspection: connector seating, shield continuity, and jacket integrity check
- Siemens part number label and batch code verified against Siemens Industry Mall records
- Anti-counterfeit verification available upon request (hologram label, batch trace)
Procurement Process
- Step 1: Confirm your existing cable part number (6FX2001-3EC50) and required cable length/variant
- Step 2: Submit your RFQ or place order directly via Konmask.com product page
- Step 3: Receive order confirmation with lead time and shipping details within 1 business day
- Step 4: Shipment with packing list, quality certificate, and tracking number
- Step 5: Post-delivery technical support available via support@konmask.com
Technical FAQ
Q: Is the 6FX2001-3EC50 compatible with SINUMERIK 828D?
A: Yes. The cable is compatible with SINUMERIK 828D and 840D sl encoder interfaces using the standard X411/X412 connector pinout.
Q: Can this cable be used in a cable carrier (energy chain)?
A: Yes, provided the dynamic flex rating (–10 °C to +70 °C) and minimum bend radius specifications are observed.
Q: What is the maximum encoder cable run length supported?
A: Refer to Siemens SIMODRIVE 611 configuration manual for maximum cable length per encoder type. Konmask technical team can advise on your specific axis configuration.
Q: Do you provide a certificate of conformity?
A: Yes. A certificate of conformity and batch traceability document are available upon request for all orders.
Q: What if I need a different length variant?
A: Contact us at support@konmask.com with your required length. We maintain stock of multiple 6FX2001 series variants.
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