175H1740
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The 175H1740 is a 3 horsepower variable frequency drive designed for panel mounting, with an input voltage of 460 V AC. Made by Danfoss, it is part of the VLT 3000 Variable Speed Drives series and operates within a frequency range of 0-400 Hz. Featuring NEMA 1 enclosure, it handles 150% overload capacity for 60 seconds.
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Product Description:
The 175H1740 is an AC motor controller designed for industrial automation by Danfoss, as a part of the VLT® 3000 variable speed drive series. It supports communication through RS485 for direct PLC and SCADA integration. This drive is enclosed in an IP54-rated housing for use in dust and splash-prone environments.
The 175H1740 drive accepts a three-phase input voltage from 440 to 500 VAC and it has dynamic braking to dissipate excess energy during motor deceleration. Its front panel features a digital keypad with fixed function control keys that provides direct access to parameters, diagnostics and operational commands. The drive uses voltage/frequency scalar control that suits standard induction motors and it supports output frequency adjustment up to 400 Hz. It has a nominal output power of 3 HP with 4.8 A of current and its peak bearable output capacity is 5 HP. The 175H1 control drive possess an overload handling tolerance of 150% for 60 seconds and it includes thermal monitoring and protection against phase losses and short circuits, while its motor protection extends to earth fault detection and electronic thermal monitoring. The drive’s operating efficiency is rated at approximately 98% under nominal load and it supports standard line frequencies of 50/60 Hz. It allows parallel motor control without loss of synchronization or regulation and its optional RFI filters can be added for compliance with EMC requirements.
The 175H1740 drive makes the parameter settings accessible via the onboard interface for field configuration and its enclosure allows direct installation without external panels. It provides vibration resistance up to 0.7 g to control motors in conveyor, pump and fan systems. This 175H1 control drive supports motor cable of size 12 AWG and length up to 1000 ft.
Frequently Asked Questions about 175H1740:
Q: How does the RS485 communication feature benefit the 175H1740 drive?
A: The RS485 port enables seamless integration with PLC and SCADA systems, allowing remote monitoring and parameter adjustment. This reduces downtime and enhances centralized automation control.
Q: Why is voltage/frequency scalar control used in the 175H1740 instead of vector control?
A: Its scalar control is simpler and cost-effective, making it ideal for standard induction motors. It provides sufficient accuracy for applications like pumps and fans without complex tuning.
Q: What role does the overload tolerance of 150% for 60 seconds play in the 175H1740?
A: This feature allows motors to handle sudden torque surges without tripping. It is particularly beneficial in conveyor systems where load variations occur frequently.
Q: How does electronic thermal monitoring enhance protection in the 175H1740 drive?
A: Its electronic thermal monitoring prevents overheating by constantly tracking motor and drive temperature. It ensures safe operation and extends motor lifespan under variable load conditions.
Q: Why is vibration resistance of 0.7 g valuable for the 175H1740 drive?
A: This ensures stable performance in environments with mechanical vibrations, such as conveyor belts and heavy machinery. It minimizes risk of parameter drift or hardware faults.
