TFM 3.1-020-300-W1-220 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat TFM 3.1-020-300-W1-220 is part of the TFM Variable Frequency Drives series and has a rated current of 20 Amps with a DC bus voltage of 300 VDC. The drive uses internal air cooling, has a cabinet rating of IP54, and a protection rating of IP20. It weighs 11.2 kilograms and operates with a blower supply of 220 VAC.
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Product Description:
The TFM 3.1-020-300-W1-220 is a variable frequency drive produced by Bosch Rexroth Indramat and placed within the TFM Variable Frequency Drives series. It converts fixed-frequency mains power into a regulated DC bus and pulse-width-modulated output for three-phase induction motors used in automated machinery. By adjusting output frequency and voltage, the device supports speed control, torque regulation, and controlled stops for material-handling, packaging, and general factory automation. This operating method helps conveyors, fans, and similar loads respond smoothly to changing machine commands.
The drive’s intermediate circuit is held at 300 VDC, providing a stable energy reservoir for the output inverter stage. The integral blower circuit is energized at 220 VAC, so the cooling fan can continue running after shutdown for thermal rundown. At full load, the inverter supplies 20 A of phase current, which supports motor branch sizing and related protective devices. The power section has a protection rating of IP20, which helps prevent accidental contact with live parts and requires installation inside a suitable cabinet. Stable DC bus conditions help the inverter maintain consistent switching performance during motor acceleration and deceleration.
When the drive is installed inside a suitable enclosure, the assembly attains a cabinet rating of IP54, which blocks dust and protects against light spray. Heat is removed by internal air cooling that directs blower flow across the heat sink fins without external ductwork. The electronics tolerate ambient temperatures up to 55 °C without current derating. Its shipping weight is 11.2 kg, which is manageable during panel installation. The enclosed arrangement also keeps airborne contamination away from internal assemblies during normal industrial use.
Frequently Asked Questions about TFM 3.1-020-300-W1-220:
Q: What blower supply voltage is needed for the TFM 3.1-020-300-W1-220?
A: The TFM 3.1-020-300-W1-220 variable frequency drive requires a blower supply of 220 VAC for proper operation.
Q: What cooling method does the TFM 3.1-020-300-W1-220 utilize?
A: This model uses an internal air cooling method to maintain optimal operating temperatures.
Q: What is the maximum ambient temperature rating for the TFM 3.1-020-300-W1-220?
A: The maximum ambient temperature for safe operation of this drive is 55 °C.
Q: What cabinet rating does the TFM 3.1-020-300-W1-220 offer?
A: The cabinet rating for this product is IP54, providing a higher level of protection against dust and splashing water.
Q: What is the rated current of the TFM 3.1-020-300-W1-220 drive?
A: This variable frequency drive offers a rated current of 20 A for supported applications.
