175Z7441
by Danfoss
The Danfoss 175Z7441 frequency converter is a robust member of the VLT 6000 HVAC Drives series, engineered for precise motor speed and torque control in HVAC and industrial automation systems. It operates on a wide supply voltage range of 3 x 380/400/415/440/460 V ±10%, delivering an output frequency from 0–120 Hz (extendable to 1000 Hz) to match diverse motor requirements. With adjustable ramp times spanning 1–3600 seconds, the unit ensures smooth acceleration and deceleration profiles, minimizing mechanical stress and optimizing system responsiveness.
This converter further distinguishes itself with high performance ratings: it sustains overload torque of 110% for one minute and starting torque of 110%, guaranteeing reliable startup under heavy loads. The design tolerates supply imbalances between ±2.0% and ±3.0%, and it withstands a max short circuit current of 100,000 A, safeguarding the drive and motor during fault conditions. The device maintains a power factor (cos φ) of 0.90/1.0 at rated load, while its max system differential pressure rating of 72 psi (5 bar) underlines its suitability in pressurized environments.
Built for versatile installation, the 175Z7441 is offered in both NEMA 1 or chassis enclosure types to fit varied cabinet configurations. Its efficiency of 0.95 translates to reduced energy losses and lower operating costs, while a rated motor voltage range of 380–460 V at 50/60 Hz ensures global compatibility. The drive supports output voltage modulation from 0–100% of supply, enhancing motor control fidelity. Broad supply frequency tolerance (48–62 Hz ±1%) and comprehensive torque management make this unit exceptionally durable. Integrating this converter into HVAC and industrial automation applications yields optimized motor performance, reduced downtime, and measurable energy savings across critical processes.
