KDF 1.2-050-500-W0-220 Bosch Rexroth Indramat
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MPN: R911226001
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The Bosch Rexroth Indramat KDF 1.2-050-500-W0-220 is part of the KDF Variable Frequency Drives series and supports a blower voltage of AC 220 V. It features a rated current of 50 Amps, a rated voltage of 300 V DC, and uses a diagnostic display with H1 and H2. The drive holds a protection rating of IP20 and is suitable for operation up to 55 degrees Celsius and at a maximum altitude of 1000 meters.
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Product Description:
The KDF 1.2-050-500-W0-220 is a variable frequency drive manufactured by Bosch Rexroth Indramat within the KDF Variable Frequency Drives series. It converts a fixed DC link into a modulated three-phase output, allowing motor speed and torque to match process demands. Positioned between a rectifier supply and an induction motor, the module supports closed-loop speed regulation for conveyors, packaging equipment, and general-purpose machinery in industrial plants. The output waveform is adjusted electronically, so acceleration and steady-state running can be controlled more smoothly than with direct line starting.
The drive operates from a DC link potential of 500 V DC, giving it the voltage headroom required for stable switching and full power delivery. A continuous output capacity of 50 A matches medium-frame motors during sustained duty cycles. Cabinet integration is aided by the IP20 housing, which protects against accidental finger contact but still requires the surrounding enclosure to provide dust and liquid protection. Status indicators marked H1 and H2 display fault and operating codes, making the drive condition visible from the front of the unit. Reliable operation is maintained up to a maximum ambient temperature of +55 °C, so additional airflow may be needed when panel temperatures approach this limit.
Auxiliary cooling fans connect to a dedicated supply of AC 220 V, avoiding the need for a separate low-voltage converter for fan power. Control electronics reference a nominal link voltage of 300 V DC, and deviations beyond set thresholds trigger protective shutdowns that help protect semiconductor components. The unit tolerates site moisture levels of up to 75% RH, provided condensation is prevented during operation. Humidity control remains important because condensation can reduce insulation performance and interfere with reliable switching. Rated performance is available up to an installation height of 1000 m, which covers most inland manufacturing locations without power derating.
Frequently Asked Questions about KDF 1.2-050-500-W0-220:
Q: What is the blower voltage required for the KDF 1.2-050-500-W0-220 drive?
A: The KDF 1.2-050-500-W0-220 uses an AC 220 V blower for cooling.
Q: What is the DC bus voltage specification for the KDF 1.2-050-500-W0-220?
A: This model operates with a DC bus voltage of 500 V DC.
Q: What kind of diagnostic display does the KDF 1.2-050-500-W0-220 feature?
A: The diagnostic display features H1 and H2 indicators for system monitoring.
Q: What is the maximum ambient temperature the KDF 1.2-050-500-W0-220 can handle?
A: It is rated for a maximum ambient operating temperature of +55 °C.
Q: What is the protection rating of the KDF 1.2-050-500-W0-220 drive?
A: This unit has an IP20 protection rating, offering basic solid object ingress protection.
