Product Description:

The 10.S4.D31-347M is a servo controller produced by KEB for the S4 Combivert Servo Controllers series. It accepts three-phase mains power, modulates that supply, and delivers closed-loop speed and torque commands to matched servo motors so automated machines can position, index, and tension loads with repeatable accuracy. The unit mounts inside a control enclosure and links to higher-level PLCs through the series’ standard communication options, forming the power stage between logic and mechanics.

The controller’s input window spans from 305 V AC up to 500 V AC, allowing it to operate on common 400-volt class networks. A maximum line current of 7.4 A flows into the converter, and that feed can be routed through 1.5 mm² conductors protected by a 10 A line fuse. Inside the inverter section, sinusoidal PWM is generated for a continuous output of 6.4 A per phase while the carrier can sweep to 400 Hz; this wide frequency range lets the same drive run low-speed positioning tasks or high-speed spindles without hardware changes. The drive presents symmetrical 3-in/3-out terminals so phase rotation remains consistent between the supply and motor.

Short acceleration bursts are handled by a peak capability of 22 A / 200 ms, giving reserve torque for overcoming static friction or load shocks. During such peaks, the power stage sheds thermal energy, contributing to a total heat dissipation of 110 W that must be extracted from the cabinet airflow. When loaded continuously, the inverter can deliver a mechanical power equivalent of 4.4 kVA at the motor terminals, with output voltage limited to 480 V AC so insulation stress stays within IEC class ratings. System conductors are secured behind finger-safe terminals rated to IP20, and the housing shares the same IP20 protection level, allowing the drive to be placed in ventilated electrical panels without additional gasketing.