175H9100 Danfoss
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The Danfoss 175H9100 is a variable speed drive in the VLT 3000 Variable Speed Drives series and provides a typical shaft output of 11.0 kW. It supports rated motor voltages of 380, 400, and 415 V with a supply frequency of 50 or 60 Hz, and has a power factor up to 1.0. The drive allows a maximum screened motor cable length of 150 meters at a carrier frequency up to 4.5 kHz, and up to 300 meters total motor cable length.
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Product Description:
The 175H9100 variable frequency drive is produced by Danfoss within the VLT 3000 Variable Speed Drives series. Designed for cabinet mounting in industrial automation lines, it receives three-phase mains power, rectifies it, and issues a controlled AC waveform so induction motors can operate at commanded speeds rather than at the fixed utility frequency. This modulation allows precise torque control for conveyors, pumps, and ventilation equipment while lowering energy consumption and extending mechanical life.
This drive accepts a line input of 3 × 380/400/415 V AC (±10%), matching common plant distribution levels. Internal rectification and inverter stages operate with an incoming line frequency of 50/60 Hz, and the control logic then generates selectable output frequencies while delivering a shaft power of 11.0 kW when paired with a properly rated motor. At unity load, the displacement power factor reaches 0.9/1.0, meaning reactive current is minimized and upstream conductors are used efficiently. The output section can be configured for constant-torque or constant-horsepower regions across 50/60/87/100 Hz, while the rated motor voltage remains 380, 400, or 415 V to preserve magnetic flux in standard IEC windings.
Pulse-width modulation is limited to a carrier frequency of 4.5 kHz, a value that balances acoustic noise with semiconductor switching losses. To prevent thermal cycling in electromechanical contactors, the integrated DC link allows input switching only once per minute, so frequent start-stop sequences require an external bypass. For long motor leads, the unit supports shielded cable runs up to 150 m at or below the carrier frequency limit and unshielded lengths up to 300 m, permitting remote motor placement without excessive voltage drop. These cable allowances work with the specified motor voltage to maintain rise time within insulation limits and support stable current feedback to the drive.
Frequently Asked Questions about 175H9100:
Q: What is the carrier frequency limit for the Danfoss 175H9100 drive?
A: The 175H9100 supports a maximum carrier frequency limit of 4.5 kHz.
Q: What is the typical shaft output power of the 175H9100?
A: This drive operates with a typical shaft output of 11.0 kW.
Q: What motor voltage does the 175H9100 drive support?
A: The rated motor voltage for this model is 380, 400, or 415 V.
Q: What is the maximum screened motor cable length for the 175H9100?
A: The maximum length for a screened motor cable is 150 meters when operated at 4.5 kHz or less.
Q: What rated motor frequency values are supported by the 175H9100?
A: The rated motor frequency options are 50, 60, 87, or 100 Hz.
