KDW 1.1-100-300-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDW 1.1-100-300-W1 is a servo drive module in the KDS Servo Drive Modules series. It provides a power output of 30 kW and supports a peak current of 100 Amps, with forced ventilation cooling and an external LE4 fan unit. The drive operates with a link circuit DC voltage of 300 V and weighs 15.2 kilograms.
Internal Product Review
The KDW 1.1-100-300-W1 is a KDS servo drive module with 30 kW power output and forced-ventilation cooling. A 300 V DC link circuit and 100 A rated current support stable servo performance in demanding axis applications. IP10 protection and a permissible ambient range of +5 to +45°C make the module a solid fit for controlled industrial cabinets.
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Product Description:
The KDW 1.1-100-300-W1 module is produced by Bosch Rexroth Indramat for the KDS Servo Drive Modules series. Within a multi-axis cabinet, it forms the DC bus supply and energy-return path that the associated servo drives rely on for regulated power exchange between the line side and the intermediate circuit. Design code 1 and model version 1 indicate the first release in this family, and the module maintains a stable intermediate circuit so synchronous and asynchronous motors can accelerate or decelerate precisely during automated machining, packaging, or material-handling tasks in production equipment.
This supply can deliver a continuous output of 93 A, giving drives enough current to support simultaneous axis motion across multiple axes without thermal derating. Power is taken from a link circuit held at 300 V (+/- 15%); the module compensates for this tolerance so downstream inverters see a predictable DC level during changing load conditions. Heat produced by the switching electronics is removed through forced ventilation, which channels airflow directly across the heat sink fins and helps prevent hot spots during rapid load cycles. Protection is limited to IP10, meaning the unit must be installed inside a closed control cabinet where falling objects are blocked and fingers cannot contact live parts.
The integrated temperature management works in conjunction with an external fan unit designated LE4, allowing full output across an ambient range of +5 to +45 °C without performance reduction. At maximum demand, the power section can supply up to 100 A for short periods, translating to a DC power throughput of 30 kW and allowing braking energy to be returned to the mains when the axes decelerate. Despite this capacity, the enclosure weighs only 15.2 kg, which helps keep cabinet loading manageable in dense drive stacks and compact enclosures.