Product Description:

The 05.S4.D31-127C is manufactured by KEB and belongs to the S4 Combivert Servo Controllers series. It receives three-phase 230 V AC from the plant mains and modulates that energy so a connected motor follows precise speed and torque commands issued by a motion controller. Integrated line filtering and current-conditioning functions allow this controller to mount directly in control cabinets and support straightforward setup for conveyors, pick-and-place axes, and similar automated equipment. The unit is intended for servo applications that require stable motor response during indexing, speed regulation, and changing load conditions.

The built-in EMC filter is dimensioned for a continuous current of 20 A at a rated filter voltage of 230 V; under those conditions, leakage toward ground is limited to 12 mA. When the controller is energized, it draws an input current of 7 A from the three supply phases, and wiring to the line terminals must use conductors with a 1.5 mm² cross-section. Internally, the power stage releases up to 75 W of heat during nominal operation, so cabinet airflow must remove that loss to keep semiconductor junctions within allowed limits. The housing carries a protection class of IP20, indicating finger-safe access but no sealing against airborne dust, so it is intended for installation inside an enclosed panel. This enclosure style suits protected cabinet interiors where airflow and contamination control are managed by the machine layout.

For dynamic loads, the current can rise to 14.8 A for a maximum interval of 600 ms, while the continuous output and stall current support steady torque delivery during normal running and low-speed operation. The momentary overcurrent capability reflects the Imax/Id0 ratio of 2.3, giving the drive additional reserve during rapid acceleration and short load peaks. A mains fuse rated at 10 A must be installed upstream to protect wiring and semiconductor devices against sustained faults. These operating limits should be observed during panel integration and motor matching.