Elmo G-TUB30/480ERSS0 – High‑power EtherCAT AC servo drive for 400–480 VAC motion systems

The Elmo G‑TUB30/480ERSS0 is a mains-powered “Gold” series servo drive designed for machines that need real torque at 400–480 VAC. From my experience, this model is picked when you want compact footprint, EtherCAT control, and rock-solid resolver feedback on heavier axes—think high‑inertia gantries, packaging unwinders, winding lines, or indexing tables that typically run around the 10–20 kW range. You might notice that it brings Elmo’s fast current loops and very low latency on EtherCAT, which in many cases translates into tighter following error and smoother motion profiles.

Order Placement Process & Guarantees

• Warranty: 365 days
• Lead time: 1 week if in stock; no more than 1 month at the latest
• Payment: 50% advance payment; full payment prior to delivery
• Express options: FedEx, UPS, DHL

Key Features

• 480 VAC class, high current stage – Typically supports up to 30 Arms continuous (higher peak), suitable for demanding servo axes on 400–480 VAC mains.
• EtherCAT control (CoE) – Fast cyclic control with distributed clocks; easy to integrate in mixed-brand EtherCAT lines.
• Resolver feedback input – Robust in harsh environments with electrical noise, often preferred on large-frame motors and high‑vibration machinery.
• Dual‑channel STO – Integrated Safe Torque Off (typically SIL 3 / PL e) to simplify safety wiring and reduce external hardware.
• Compact panel‑mount design – Saves cabinet space; usually installs close to the motor feeder section to reduce cable runs.
• High bandwidth current/velocity loops – Helps reduce settling time and improve surface quality on precision mechanisms.
• Comprehensive I/O – Digital I/Os for limits, home, interlocks; analog input for torque/velocity trim in commissioning.
• Engineering via Elmo tools – Commission with EASII software; convenient RS‑232 service port for setup and diagnostics.

Technical Specifications

Notes: Exact I/O count, dimensions, and peak current depend on the specific hardware revision. If you share your motor model and duty cycle, we can confirm continuous/peak margins and braking resistor sizing before you place the order.

Related or Supporting Products

• Elmo G‑TUB20/480 – Same family, lower continuous current; a good fit for mid‑torque axes.
• Elmo G‑TUB45/480 – Higher current capacity for heavier loads; typically used on main spindle or heavy gantry axes.
• Elmo G‑TRO (Gold Trombone) series – High‑power DC‑bus drives; a practical alternative if your machine already has a DC supply.
• Braking resistor (external) – Sized to your inertia/regen profile; prevents DC bus overvoltage on fast decelerations.
• EMC line filter and line reactor – In most cases required to meet CE/EMC in 480 VAC cabinets and improve mains quality.
• Resolver‑equipped AC servo motors – The G‑TUB works smoothly with resolver feedback on large‑frame servo motors.
• EtherCAT infrastructure – Shielded Cat5e/Cat6, managed switch for diagnostics (if daisy‑chain not used), and proper network grounding.

Installation & Maintenance

• Cabinet & mounting – Install vertically in an enclosed cabinet (IP54 or better for industrial environments). Leave top/bottom clearance for airflow; use forced ventilation when the RMS load is high.
• Power wiring – Use 3‑phase 400–480 VAC with proper over‑current protection and an EMC filter. Ground the drive to a low‑impedance PE bar; keep motor and mains cables physically separated from signal wiring.
• Motor/feedback wiring – Twisted, shielded motor leads; resolver cable with 360° shield termination at the drive. Keep feedback and I/O away from high‑current runs to minimize noise.
• STO & safety – Wire both STO channels per the manual; verify safety function during commissioning. From my experience, a periodic STO proof test saves headaches during audits.
• Commissioning – Use EASII for tuning. Start with current loop auto‑tune, then velocity/position. Validate EtherCAT cycle times (e.g., 1 ms or faster) against CPU load and network jitter.
• Routine maintenance – Quarterly dust removal and connector torque checks; review logs for faults/over‑temp. Firmware updates via RS‑232/EtherCAT when available (back up parameters first).
• Thermal checks – If the cabinet runs warm, add a small fan tray. You might notice performance gains after keeping the heat sink below about 60 °C in continuous duty.

Quality & Certifications

• Certifications: CE, UL/cUL, RoHS compliant; STO typically SIL 3 / PL e (per IEC 61800‑5‑2 and related safety standards).
• Manufacturer quality system: ISO 9001 (commonly adopted in this product class).
• Warranty: 365‑day supply warranty as stated above; extended coverage available on request.

Customer feedback from a recent retrofit: “Swapping to the G‑TUB30/480ERSS0 cut our cycle time by ~12% on the unwind axis. Tuning was faster than expected, and EtherCAT synced right up with our Beckhoff PLC.” That seems to be a common pattern when moving from older analog drives to this Gold series platform.