175H1739
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The 175H1739 is a variable speed drive manufactured by Danfoss. As part of the VLT 3000 Variable Speed Drives, it operates on a 3 Phase input voltage of 460V AC with an output power of 2.2 kW. The drive features an enclosure rating of IP20/IP54 and supports motor cable lengths up to 300 meters. It delivers 96% efficiency at 100% load.
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Product Description:
Danfoss designs 175H1739 as VLT 3000 series drive for motor control. It delivers 2.2 kW output power and supports 3-phase input voltage between 440 V to 500 V AC, with 50/60 Hz line frequency. The drive integrates voltage vector control for accurate torque and speed regulation, as well as delivers full motor voltage without performance derating under load and achieves 96% efficiency at full rated power.
The 175H1739 drive’s enclosure is rated IP54 for industrial environmental protection and it supports ambient operating temperatures from -10°C to +40°C. Its integrated thermal protection includes electronic motor overload and thermistor inputs per DIN 44081, while its ground fault and short-circuit protection is factory configured. The unit’s power and control circuits are galvanically isolated. Its ramp-up and ramp-down times are adjustable from 0.1 to 3600 seconds, while it permits 2 times per minute input and unlimited output switching on the terminals. The 175H drive comes with tactile membrane keys for control and its panel provides start, stop, jog and direction control functions to allow multi-mode configuration. Its diagnostic LEDs display operational and fault states in real time. The drive possess RS-485 Modbus for remote serial communication and its motor output frequency is programmable from 0 to 500 Hz. Its control circuits meet PELV isolation for operator safety and it mounts through screw holes provide on the sides.
The 175H1739 drive includes built-in EMC filtering per EN 55011 standard and its immunity conforms to IEC 801-2, 801-4 as well as 801-5. It supports unshielded motor cable lengths up to 1000 feet and its motor voltage range is 0 to 100% of line voltage. The 175H drive is presented with wiring terminals at the base panel and its bottom plate includes standard knockouts for conduit access.
Frequently Asked Questions about 175H1739:
Q: How does voltage-vector control in the 175H1739 drive improve torque precision?
A: Its voltage-vector control maintains accurate reference of motor flux and torque by adjusting both magnitude and phase of voltage. It ensures tighter speed and torque regulation compared to scalar V/f methods.
Q: Why is galvanic isolation important in the 175H1739’s circuitry?
A: The galvanic isolation prevents electrical noise and ground loops from affecting sensitive control electronics. It enhances operator safety and system reliability in noisy industrial environments.
Q: What’s the benefit of having adjustable ramp-up/ramp-down times (0.1 to 3600 s)?
A: Its wide ramp time adjustment allows fine-tuning for smooth starts and stops, reducing mechanical stress on motors and driven equipment. It also helps mitigate inrush current and avoids abrupt load changes.
Q: What purpose does the integrated thermal protection serve in the 175H1739 drive?
A: Its thermal protection monitors motor and drive temperatures via thermistor inputs, preventing overheating. It provides early fault detection and triggers shutdown before damage occurs.
Q: Why is 96% efficiency at full rated power significant for the 175H1739 drive?
A: The high efficiency minimizes energy loss as heat, reducing cooling requirements and operating costs. It also improves overall system performance in continuous-duty applications.
