Hopewind PV Products-Hopewind

HV350 Series Universal Frequency Converter

HV350 series frequency converter is a type of cutting-edge universal vector frequency converter developed by Hopewind. It uses innovative open-loop and closed-loop vector control technologies and is capable of controlling the driving of asynchronous motors. With a focus on enriching software functions, enhancing overall performance, and improving reliability, Hopewind simplifies and develops the frequency converter with a smaller size, enhanced scalability, compatibility with more communication protocols, and ease of use, thereby better meeting customers' application needs.

Performance characteristics

High Reliability

• Independent air duct design to effectively prevent dust and impurities from entering the product
• Efficient and precise thermal simulation platform software
• Advanced thermal testing and verification technologies and equipment to validate the theoretical results of thermal design
• Rigorous full-load and overload validation testing procedures
• High-temperature load aging testing for reliable product quality before shipment
• Enhanced circuit board protection design for corrosion, moisture, and dust resistance

High Adaptability

• Wide voltage range design, supporting three-phase 380 V to 480 V (–15% to +10%)
• Built-in C3 filter, effectively suppressing high-frequency harmonics generated by the frequency converter
• Simple and user-friendly electro magnetic compatibility (EMC) ground disconnection design, minimizing the leakage current to ground
• Book-style design, reducing the overall volume by approximately 40% compared with traditional models
• Side-by-side installation of the entire unit, saving installation space

Advanced Control Technology

• Three-phase asynchronous motor control
• Voltage/Frequency (V/F) control, open-loop vector control (OLVC), and closed-loop vector control (CLVC)
• Comprehensive self-learning functions, including various motor self-learning capabilities (dynamic, static, static+dynamic, and inertia)

Industry-specific Ease of Use

• Standardly equipped with a built-in brake unit for models of 22 kW and below
• Optionally equipped with a built-in brake unit for models of 30 kW and above
• Integrated PID process control for applications such as constant temperature, constant pressure, and tension control
• Frequency swing function, suitable for chemical fiber and textile industries
• Adjustable PWM depth to reduce the motor noise
• Zero servo control, achieving motor position lock at zero speed in CLVC mode
• V/F separation mode control

Diversified Expandability

• Multiple code disc interface cards supported
• I/O terminal expansion card supported
• Various communication protocols supported, including Profibus-DP, Profinet IO, CANopen, Modbus-TCP/IP, EtherNet IP, and Ethercat

Autonomous Rapid Debugging

• Connection to back-end software for more convenient debugging and maintenance
• Event logging and fault waveform recording

main parameters

Item		Description and Technical Data
Power input and output	Input voltage	380 V (–15%) to 480 V (+10%), three-phase
	Input power frequency	50 Hz/60 Hz±5%
	Input voltage unbalance	≤ 3%
	Output voltage	0 V to input voltage
	Output frequency	0–600 Hz
Main control performance	Motor type	Asynchronous motor
	Control mode	V/F, OLVC, CLVC
	Speed range	1:10 V/F; 1:100 OLVC; 1:1000 CLVC
	Starting torque	OLVC: 150% (0.5 Hz); CLVC: 200% (0 Hz)
	Torque accuracy	≤ ±5% in vector control mode
	Torque ripple	≤ ±5% in vector control mode
	Speed stability accuracy	OLVC: 0.2%; CLVC: 0.1%
	Torque response	≤ 5 ms in vector control mode
	Acceleration and deceleration time	0.0s to 3200.0s; 0.0 min to 3200.0 min
	Torque boost	0.0% to 30.0%
	Overload capacity	G-type: 150% 1 min/5 min, 180% 10s/5 min; P-type: 110% 1 min/5 min, 150% 10s/5 min
	V/F curve	Linear type, multi-point type, V/F semi-separated mode, V/F fully separated mode
	Input frequency resolution	Digital signal precision 0.01 Hz and analog signal precision 0.01 Hz
Main functions	Acceleration and deceleration curves	Straight line, S-shaped curve
	Simple PLC and multiple speeds	16-speed operation through control terminals
	Automatic voltage regulation (AVR)	Constant output voltage when the grid voltage changes within a certain range
	Fixed length control	Predetermined length control
	Built-in PID	Easily built closed-loop control system
	Multi-motor switching	Two groups of motor parameters available to control the switching of two motors
	Virtual IO	Eight channels of virtual DI/DO for simple logic control
	Overvoltage and overcurrent stall control	Automatically limits the current and voltage during operation, to prevent frequent trips caused by overcurrent or overvoltage
	Automatic restart after a power failure	Enables the frequency converter to automatically resume operation when the set time is reached, after the frequency converter undergoes a power failure and restoration
	Fast current limit	Prevents frequent faults on the frequency converter caused by overcurrent
Power input and output	Frequency setting methods	Through the operation panel, up/down terminals, multi-speed settings, terminal pulse settings, and communication
	Analog input terminal	AI1 and AI2: 0 V to 10 V/0 (4) mA to 20 mA
	Digital input terminal	DI1–DI5, 5 programmable digital input terminals, featuring optocoupler isolation, compatible with drain/source input
		DI5 supports high-speed pulse input, with the maximum input frequency of 100 kHz.
	Digital output terminal	Open collector output; output voltage range: 0 V to 24 V; current load capacity: 50 mA
		DO1 supports high-speed pulse output, with the maximum output frequency of 100 kHz.
	Analog output terminal	1, 0 V to 10 V/0 (4) mA to 20 mA
	Relay output	1, contact-type FormC, NO and NC available
Communication	Communication protocol	Modbus RTU (standard); Profibus-DP, Profinet IO, CANopen, Modbus TCP/IP, Ethercat, and EtherNet/IP (optional)
Operating environment	Altitude	No derating is required within the altitude of 1,000 m. The current must be derated by 1% for every 100 m rise when the altitude is in the range of 1,000 m to 3,000 m.
	Ambient temperature	–25°C to +40°C (derating is allowed at a temperature of 40°C to 55°C)
	Humidity	15% to 95%, non-condensing
	Vibration	3M3, IEC60721-3-3
	Storage temperature	–40°C to +70°C
	Application sites	Indoor, without direct sunlight and free of flammable and corrosive gases, liquids, and conductive particles
Optional accessories		Code disc card, communication expansion card, IO expansion card
Protection functions		Protection against short circuit, overcurrent, overload, overvoltage, undervoltage, phase loss, overheat, and external fault
Installation method		Installed inside a chassis or cabinet
IP rating		IP20
Cooling mode		Air-cooled