03.S4.D30-1270 KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB 03.S4.D30-1270 is part of the S4 Combivert Servo Controllers series and features a 200 V supply class and housing design D. It has a peak current of 8.5 Amps for 1200 ms and a stall current of 6.4 Amps. The controller is rated for a maximum installation altitude of 2000 meters and offers IP20 protection.
Internal Product Review
The 03.S4.D30-1270 is a KEB S4 Combivert servo controller with a 200 V class supply and 3-phase line configuration. Rated output current of 2.4 A and peak current of 8.5 A for 1200 ms support stable servo response and strong overload capability. IP20 protection and 65 W heat dissipation make the controller a well-balanced choice for enclosed industrial motion systems.
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Product Description:
The 03.S4.D30-1270 is a servo controller assembled by KEB and assigned to the S4 Combivert Servo Controllers series. The device accepts three-phase low-voltage mains and modulates that energy into synchronized pulses that drive brushless servo motors used in packaging, textile, and handling equipment. By combining current regulation and velocity loops inside a compact housing, it supports precise speed control and helps reduce panel space in industrial automation systems. This operating concept suits machines that need repeatable starts, stops, and position-related speed changes across multiple production cycles. It is intended for continuous industrial duty where coordinated motor control is required.
Its thermal losses are limited to 65 W, so cabinet ventilation only needs to remove moderate heat. The unit is intended for climatic category 3K3, which suits control-room installation with filtered air and non-condensing humidity. The controller belongs to the 200 V supply class and runs on three phases. Under rated load, it draws 2.6 A from the mains and supplies 2.4 A to the motor. For short accelerations, it can furnish a peak of 8.5 A for 1200 ms, while the stall current of 6.4 A supports continuous holding torque without tripping. The housing follows design code D and carries a front-accessible terminal block. An enclosure rating of IP20 protects against accidental finger contact with live parts, so the unit must be mounted inside a control panel.
The controller may be mounted at altitudes up to 2000 m without derating. It can withstand ambient relative humidity up to 95% when condensation is prevented, which supports use in enclosed electrical cabinets. Power wiring uses copper conductors with a cross section of 1.5 mm². Using that conductor size helps maintain secure terminations and appropriate current handling at the power terminals. The line side requires a maximum 10 A semiconductor fuse or fuse link to protect the drive and upstream cables. A three-phase line connection is required for normal operation.
