SIEMENS 6SL3210-1KE18-8UP1 – Single-Axis Inverter Drive | SINAMICS S120 Platform
Engineering Background
The SINAMICS S120 series represents Siemens’ flagship multi-axis drive architecture, engineered for high-dynamic servo and vector control applications across discrete manufacturing, process automation, and motion-critical machinery. The S120 platform unifies infeed, motor modules, and control units on a shared DC bus, enabling precise energy management and coordinated multi-axis motion.
Product Positioning
The 6SL3210-1KE18-8UP1 is a single-axis Power Module in booksize format, rated for 4.0 kW / 5.5 kW (continuous / peak) output at 380–480 V AC input. It is the preferred choice for OEM machine builders and system integrators requiring compact, high-performance variable-speed control with full SINAMICS ecosystem compatibility.
Complete Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 6SL3210-1KE18-8UP1 |
| Series / Platform | SINAMICS S120 Booksize |
| Module Type | Single Motor Module (Power Module) |
| Input Voltage | 380 – 480 V AC, 3-phase (±10%) |
| Input Frequency | 47 – 63 Hz |
| Continuous Output Current | 18.0 A |
| Peak Output Current | 36.0 A (3 s) |
| Rated Output Power | 4.0 kW (continuous) / 5.5 kW (peak) |
| DC Bus Voltage | 510 – 720 V DC |
| Switching Frequency | 4 kHz (default); 8 / 16 kHz selectable |
| Control Interface | DRIVE-CLiQ (integrated) |
| Cooling Method | Forced air (internal fan) |
| Protection Class | IP20 |
| Ambient Temperature | 0 °C to +40 °C (derated to +55 °C) |
| Storage Temperature | -40 °C to +70 °C |
| Relative Humidity | ≤ 95% RH (non-condensing) |
| Altitude | ≤ 1000 m (derated above) |
| Form Factor | Booksize (panel-mount, DIN rail compatible) |
| Dimensions (W × H × D) | 50 mm × 380 mm × 270 mm (approx.) |
| Weight | ~3.5 kg |
| Certifications | CE, UL, cUL, RoHS |
| Firmware Compatibility | SINAMICS S120 FW ≥ 4.7 |
Proven Application Environments
- CNC Machining Centers – Coordinated spindle and feed-axis control via SINUMERIK integration
- Packaging Machinery – High-speed servo positioning with sub-millisecond torque response
- Printing & Converting Lines – Tension-controlled web handling with regenerative braking
- Robotics & Handling Systems – Multi-axis synchronization on shared DC bus
- Textile & Winding Machines – Precise speed/torque regulation across variable load profiles
- Conveyor & Material Handling – Energy-efficient variable-speed operation with safe torque off (STO)
- Test Benches & Dynamometers – Four-quadrant operation with regenerative energy feedback
Engineering Advantages
- DRIVE-CLiQ Integration – Single-cable connection to CU320-2 / CU310-2 control units; automatic motor identification and parameter upload
- Shared DC Bus Architecture – Enables energy exchange between braking and motoring axes, reducing net energy consumption by up to 30%
- Safe Torque Off (STO) – SIL 2 / PLd – Integrated functional safety without external contactors, reducing panel footprint and wiring complexity
- Compact Booksize Format – 50 mm width enables high-density multi-axis configurations in standard control cabinets
- Selectable Switching Frequency – 4 / 8 / 16 kHz options balance acoustic noise, thermal load, and dynamic response
- Full SINAMICS Ecosystem Compatibility – Seamless integration with SIMOTICS motors, SIMATIC S7 PLCs, and TIA Portal engineering framework
System Architecture & Signal Flow
In a typical SINAMICS S120 cabinet configuration, the 6SL3210-1KE18-8UP1 operates as follows:
- AC Supply → Active Line Module (ALM) – Rectifies 3-phase AC to regulated DC bus; provides regenerative capability
- DC Bus → 6SL3210-1KE18-8UP1 Motor Module – Receives DC bus voltage; IGBT inverter stage synthesizes variable-frequency AC output
- DRIVE-CLiQ → CU320-2 Control Unit – Real-time torque/speed setpoints, encoder feedback, and safety signals transmitted over single DRIVE-CLiQ cable
- Motor Module → SIMOTICS Servo Motor – Three-phase PWM output drives motor; integrated encoder interface closes the speed/position loop
- TIA Portal / SIMATIC S7 → CU320-2 – Higher-level motion commands via PROFINET/PROFIBUS; parameter management via STARTER or Startdrive
Sourcing & Quality Verification
- Origin: Sourced from authorized Siemens distribution channels and verified OEM surplus stock
- Inspection Protocol: Each unit undergoes visual inspection, label authenticity verification, and functional power-on test prior to shipment
- Packaging: Original Siemens anti-static packaging retained where available; ESD-safe repackaging applied otherwise
- Traceability: Batch records and serial number documentation available upon request for regulated industries
- Warranty: 12-month Konmask operational warranty covering manufacturing defects under normal operating conditions
Procurement Process
- Inquiry – Submit RFQ via Konmask.com product page or email support@konmask.com with quantity and delivery requirements
- Quotation – Receive itemized quotation with lead time, unit price, and shipping options within 1 business day
- Order Confirmation – Purchase order accepted via online checkout, bank transfer (T/T), or corporate account
- Quality Check & Dispatch – Pre-shipment inspection completed; tracking number issued within 24–48 hours
- Delivery – DHL / FedEx / UPS express (3–7 business days globally); sea freight available for bulk orders
- After-Sales Support – Technical commissioning assistance and warranty claims handled by Konmask engineering team
Technical FAQ
Q: Is the 6SL3210-1KE18-8UP1 compatible with SINAMICS S120 CU320-2 DP?
A: Yes. It connects via DRIVE-CLiQ and is fully compatible with CU320-2 DP, CU320-2 PN, and CU310-2 control units running FW ≥ 4.7.
Q: Can this module operate as a standalone drive without a Line Module?
A: No. The 6SL3210-1KE18-8UP1 is a Motor Module requiring a separate Line Module (Smart Line Module or Active Line Module) to supply the DC bus.
Q: What motor types are supported?
A: Synchronous servo motors (1FK7, 1FT7), asynchronous induction motors (1LA, 1LE), and third-party motors with compatible encoder interfaces (HTL, TTL, EnDat, SSI, DRIVE-CLiQ).
Q: Is STO (Safe Torque Off) certified?
A: Yes. STO is certified to SIL 2 (IEC 62061) and PLd / Cat. 3 (EN ISO 13849-1), eliminating the need for external safety contactors in most applications.
Q: What is the derating policy above 40 °C ambient?
A: Output current must be derated by approximately 2.5% per °C above 40 °C, up to a maximum ambient of 55 °C.
Q: Do you provide commissioning support?
A: Yes. Konmask’s engineering team offers remote commissioning guidance via TIA Portal / Startdrive. Contact support@konmask.com to arrange a session.
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