Product Description:

The 12.S4.E30-349V is a servo controller produced by KEB for the S4 Combivert Servo Controllers series. It accepts industrial line power and converts it into regulated drive voltage for motion axes used in conveyors, indexing tables, and pick-and-place gantries. Acting as the intermediary between a PLC and the motor windings, it processes real-time feedback and modulates switching elements so commanded positions, velocities, and torque limits are delivered accurately within the machine cycle. Because the unit is optimized for panel mounting, it fits easily into centralized control enclosures common to multiaxis systems.

The electrical data show how the controller fits into a power distribution panel. It is supplied from a three-phase mains source in the 400 V voltage class, giving adequate headroom for regenerative braking events. Under rated conditions, the converter processes 11.4 kVA of apparent power while drawing 18.2 A of input current. Internal dissipation peaks at 240 W, so enclosure airflow must remove that heat to avoid derating. The housing has an IP20 protection rating, indicating touch-safe openings but no resistance to sprayed liquids. Continuous service is allowed between −10 °C and 45 °C, and field wiring is accepted with conductors down to 2.5 mm², supporting compact cabinet layouts.

Short-term overload capacity supports brief demand above the rated output. The drive can supply a peak of 38 A for up to 600 ms, letting servomotors overcome static friction or accelerate high-inertia loads before returning to the continuous output current of 16.5 A, which is also its stall value. Upstream circuit protection should be limited to a 20 A mains fuse to match these current limits. Installation heights to 2000 m are permitted, provided ambient humidity does not exceed 95 % without condensation. Adequate cabinet airflow remains important at altitude, and noncondensing humidity helps protect insulation in damp production areas.