SIGMATEK 01-450-024-K AC Servo Motor – DIAS Series

SIGMATEK 01-450-024-K — Compact AC Servo Motor in the DIAS Distributed Drive Architecture

The SIGMATEK 01-450-024-K is a flange-mount AC servo motor engineered for integration within SIGMATEK’s DIAS (Distributed Intelligence Automation System) platform. Its role in a closed-loop motion control system is unambiguous: it converts electrical torque commands from the DIAS servo amplifier into precise mechanical displacement, maintaining position accuracy under variable load conditions across the full operating speed range. Unlike general-purpose induction motors, the 01-450-024-K is built around a permanent magnet synchronous rotor topology, which eliminates rotor copper losses, reduces thermal drift in the stator windings, and enables deterministic torque response at zero speed — a property that is non-negotiable in multi-axis interpolation tasks.

Within the DIAS ecosystem, the 01-450-024-K occupies the compact mid-range segment, targeting applications where axis envelope constraints are tight but torque density requirements remain demanding. The motor’s rotor inertia is matched to the DIAS amplifier’s current loop bandwidth, allowing the drive to execute velocity corrections within a single servo cycle without inducing mechanical resonance in the load train. This inertia-matching discipline is a deliberate design decision by SIGMATEK’s engineering team, and it is what separates a properly specified servo axis from one that oscillates under aggressive acceleration profiles.

The 01-450-024-K ships with a SIGMATEK-proprietary encoder interface that feeds back absolute or incremental position data — depending on the encoder variant fitted — directly to the DIAS motion controller. This feedback path is the foundation of the position loop: the controller compares the commanded trajectory against the encoder-reported actual position at every interpolation cycle, computes the position error, and issues a corrective velocity setpoint to the amplifier. The encoder’s resolution directly determines the minimum achievable positioning increment, and SIGMATEK’s encoder specification for this motor family is calibrated to support sub-micron positioning in linear-axis applications when paired with an appropriate ballscrew pitch.

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Technical Parameters

Hardware Logical Analysis

The 01-450-024-K’s permanent magnet rotor eliminates the need for rotor excitation current, which has two direct engineering consequences. First, the motor’s torque-to-current ratio (Kt) remains stable across the operating temperature range because there is no rotor resistance variation to alter the flux linkage. Second, the absence of rotor copper loss means that thermal energy is generated almost exclusively in the stator windings, where it can be conducted outward through the motor housing to the machine frame — a predictable and manageable thermal path that simplifies thermal derating calculations for the machine designer.

The motor’s EMC design follows SIGMATEK’s shielded cable and grounding doctrine. The encoder cable shield is terminated at the motor connector shell and at the drive chassis, creating a low-impedance return path for high-frequency common-mode currents induced by the PWM switching of the servo amplifier. This shield termination strategy suppresses encoder signal corruption that would otherwise manifest as position jitter or spurious fault trips in high-EMI environments such as welding cells or large VFD installations. The motor housing itself is constructed from die-cast aluminum alloy, which provides both structural rigidity and a Faraday-cage effect against radiated interference entering the encoder electronics.

The stator winding configuration uses a distributed winding pattern rather than a concentrated winding, which reduces the spatial harmonic content of the air-gap flux density. Lower spatial harmonics translate directly into reduced cogging torque — the periodic reluctance variation that causes velocity ripple at low speeds. In applications such as gravure printing or precision dispensing, where constant surface velocity at low RPM is a process requirement, the 01-450-024-K’s low cogging characteristic is a measurable performance differentiator against motors with concentrated windings.

The shaft seal rated to IP65 uses a contact lip seal on the drive-end bearing cap. This seal prevents coolant mist and metallic swarf from entering the bearing cavity, which is the primary failure mode for servo motors in machining center environments. The bearing preload is set at the factory to minimize axial play while avoiding excessive preload that would accelerate bearing fatigue under combined radial and axial loading from helical gear or belt drive arrangements.

System Integration Benefits

• Native DIAS Bus Compatibility: The 01-450-024-K connects directly to SIGMATEK S-DIAS and C-DIAS amplifier modules via the DIAS encoder interface without any signal conditioning hardware, eliminating an entire layer of potential signal integrity issues.
• Deterministic Torque Response at Zero Speed: The PMSM topology delivers full rated torque at standstill, enabling the axis to hold position against gravity or process forces without requiring a mechanical brake in many vertical-axis applications.
• Reduced Commissioning Time: SIGMATEK’s LASAL motion software includes motor parameter sets for the 01-450-024-K, allowing the drive to auto-configure current loop gains without manual parameter entry — reducing axis commissioning from hours to minutes.
• Predictable Thermal Behavior: The stator-dominant heat generation model allows machine builders to calculate thermal steady-state temperatures analytically, avoiding the iterative thermal testing cycles required for motors with less predictable loss distributions.
• High Bandwidth Velocity Loop: The matched rotor inertia and DIAS amplifier current loop bandwidth support velocity loop crossover frequencies that enable tight contouring accuracy in multi-axis interpolation without requiring mechanical damping elements.
• Diagnostic Transparency: The DIAS encoder feedback path carries not only position data but also motor temperature and encoder health status back to the controller, enabling the PLC program to implement predictive maintenance logic based on winding temperature trends.
• Scalable Multi-Axis Architecture: Multiple 01-450-024-K motors can be driven from a shared DIAS DC bus, allowing regenerative energy from decelerating axes to be consumed by accelerating axes — reducing peak demand on the mains supply and lowering energy costs in high-cycle applications.
• Long-Term Parts Availability: SIGMATEK maintains backward compatibility across DIAS generations, meaning a replacement 01-450-024-K can be installed into an existing machine without firmware changes to the motion controller — a critical factor for machine builders supporting installed base equipment over a 10–15 year product lifecycle.

Quality Assurance & Global Logistics

Every SIGMATEK 01-450-024-K unit supplied by siemensplc.com is sourced through verified industrial distribution channels. Units undergo a structured incoming inspection protocol that covers nameplate data verification against the purchase order, visual inspection of the shaft, flange face, and connector body for transit damage, and continuity verification of the encoder cable interface pins. Where test equipment permits, powered rotation testing with encoder signal capture is performed to confirm that the feedback waveform meets SIGMATEK’s specification before the unit is released to stock.

Packaging follows anti-static and mechanical shock protection standards appropriate for precision servo components. The motor is wrapped in anti-static foam, placed in a rigid inner carton with void fill, and enclosed in a double-wall corrugated outer carton rated for international air freight handling. For shipments requiring export documentation — including commercial invoice, packing list, and certificate of origin — our logistics team in Xiamen, China prepares all paperwork in compliance with the destination country’s import requirements.

Dispatch from our Xiamen warehouse is available via DHL Express, FedEx International Priority, and UPS Worldwide Express, with typical transit times of 3–5 business days to Europe, North America, and Southeast Asia. For customers in regions with specific customs requirements, we provide HS code documentation and can arrange pre-shipment inspection certificates upon request. All shipments include full tracking from collection to delivery, with proactive exception management by our logistics team.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
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