B3.S4.D2E-5100 KEB
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The KEB B3.S4.D2E-5100 is a servo controller from the S4 Combivert Servo Controllers series. It has a rated current of 4.7 Amps, an apparent power of 1.9 kVA, and supports a voltage class of 200 V. The controller features a forced ventilated cooling system, IP20 protection rating, and dimensions of 240 mm height, 90 mm width, and 250 mm depth.
Internal Product Review
The B3.S4.D2E-5100 is a KEB S4 Combivert servo controller with a 200 V voltage class and 4.7 A rated current. Forced-ventilated cooling and IP20 protection give the controller dependable cabinet performance, making the unit a strong choice for compact servo applications.
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Product Description:
The B3.S4.D2E-5100 is a compact servo controller manufactured by KEB as part of the S4 Combivert Servo Controllers series. It converts fixed mains power into regulated three-phase output, allowing precise speed and torque adjustment for synchronous or induction motors in packaging, handling, and general automation lines. By interfacing directly with a PLC, the device closes the drive control loop and supports repeatable positioning and cycle timing in industrial machinery. This arrangement also helps the controller respond to changing load conditions during repetitive motion cycles.
Electrically, the controller belongs to the 200 V supply class and carries a continuous phase current rating of 4.7 A. Its apparent power capability reaches 1.9 kVA, enabling reliable acceleration and braking of medium-inertia loads without external chokes. Heat is removed through forced ventilation, which helps maintain semiconductor temperatures within the 3K3 climatic category used for cabinet environments. The enclosure offers an IP20 protection rating, giving basic finger-safe coverage while still requiring installation inside a switchgear cabinet where higher ingress protection is needed. This cooling arrangement suits cabinet-mounted operation with controlled airflow and stable internal conditions.
The unit uses a Housing Type D frame with a width of 90 mm, while the overall height is 240 mm and the depth is 250 mm, supporting side-by-side DIN-rail layouts. Four slots with 5 mm mounting holes provide straightforward panel attachment and preserve service space around the heat sink. Continuous operation is approved up to 2000 m altitude and in ambient air with relative humidity reaching 95%, provided condensation is avoided. The mounting format is suitable for compact control cabinets where adjacent components still need clear access for wiring and heat dissipation. The drive is intended for installations where enclosure space, airflow, and humidity stay within those operating limits.
