Welcome to BKPOWER!
Variable Frequency Drive(VFD)丨Single‑Phase BK-ZHB Series(0.75~3kw)
PRODUCT PARAMETERS
Description
Product Overview
The BK-ZHB560 series（single-phase） heavy-duty Variable Frequency Drive (VFD) is a high-performance current vector frequency converter specifically engineered for heavy-duty industrial applications with single-phase power supply. As a professional single-phase AC drive, it is perfectly suited for driving general-purpose single-phase AC asynchronous motors, and excels in powering equipment with high starting impact and continuous heavy loads—such as small-to-medium industrial pump inverter (pumps), fan inverter (fans), compressors, mini elevator drive (elevators), small presses, and light crushers.
This single-phase Variable Frequency Drive (VFD) supports two reliable control modes: voltage-to-frequency ratio control (V/F control) and sensorless vector control (SVC). It boasts an overload capacity of 1.5 times the rated current, outstanding low-frequency high-torque output performance, and a comprehensive fault protection mechanism. Designed to adapt to single-phase grid characteristics, this frequency inverter can effectively handle grid voltage fluctuations, minimize equipment energy losses, and significantly enhance the operational stability and energy efficiency of industrial production powered by single-phase supply.
The core design of this single-phase AC drive focuses on high reliability, strong environmental adaptability, and precise control under heavy-duty conditions. Through optimized heat dissipation structure and circuit layout, it ensures long-term stable operation in harsh industrial environments—even when powered by single-phase grid, meeting the rigorous demands of continuous industrial operations as a professional inverter drive.
Applications
The BK-ZHB560 Series Single-Phase Variable Frequency Drive (VFD) is widely applied in small-to-medium industrial scenarios, commercial facilities, and small-scale heavy-load operations that rely on single-phase power supply. It provides stable, efficient, and precise drive solutions as an industrial frequency inverter for small-to-medium heavy-duty equipment with high starting torque requirements and harsh operating conditions (power range typically ≤ 3kW, adapted to single-phase AC asynchronous motors):
Light Industry & Metallurgical Auxiliaries
- Small-scale non-ferrous metal processing equipment (mini calenders, small smelting auxiliary machines)
- Laboratory-grade ore crushers, small ball mills (mineral processing test equipment)
- Small metallurgical hoisting tools, portable ladle transfer devices
- Light-duty steel processing auxiliary equipment (small rolling machine accessories)
Miniature Mining & Construction Materials
- Small mine auxiliary conveyor drive (conveyors, portable belt conveyors)
- Household/small-scale stone crushers, mini sand making machines
- Small construction hoists, portable tower crane auxiliary drives
- Small cement mixer drives, mini concrete mixing equipment
Small-Scale Port & Logistics Handling
- Small warehouse automated storage stackers (light-duty models)
- Portable container loading/unloading auxiliary equipment
- Small-scale heavy-duty conveyor drive (conveyors, workshop internal material transfer)
- Lightweight grab handlers (small bulk material handling)
Chemical & Petroleum Auxiliaries
- Small chemical reactor agitators (laboratory or small-batch production)
- Portable oil drilling auxiliary pumps
- Small air compressors, mini reciprocating pumps
- Small pipeline transportation pumps (local oil/gas transfer)
Small-Scale Water Treatment & Environmental Protection
- Small chemical reactor agitators (laboratory or small-batch production)
- Portable oil drilling auxiliary pump inverter (pumps)
- Small air compressors, mini reciprocating pump inverter (pumps)
- Small pipeline transportation pump inverter (pumps, local oil/gas transfer)
New Energy & Power System Auxiliaries
- Small wind turbine pitch control auxiliary motors
- Solar energy storage system small pump inverter (pumps)
- Small power plant boiler auxiliary pump inverter (pumps, mini feed pumps)
- New energy vehicle production line auxiliary conveyor drive (conveyors, light-duty)
Agriculture & Food Processing
- Small agricultural machinery (portable combine harvesters, mini tractors)
- Grain drying equipment (small-scale farm use)
- Household/small-scale oil press machines, food extrusion equipment
- Small feed grinder drives, mini mixing machines
Commercial & Industrial Auxiliaries
- Small HVAC inverter (HVAC system pumps, mini fans, commercial buildings)
- Light-duty workshop machine tools (small lathes, drilling machines)
- Portable elevator drive (elevators, small residential or warehouse elevators)
- Small-scale printing and packaging equipment drives
Product Features
Diversified and Precise Control Technology for VFD
Supports two control modes (V/F control, SVC open-loop vector control) for variable frequency drive, which can be flexibly switched according to the characteristics of heavy-duty equipment. This frequency inverter can output 150% rated torque at a low frequency of 0.25Hz, with strong loaded starting capability and a steady-state speed accuracy of ≤±0.2%, meeting the precise speed regulation needs of high-demand industrial scenarios as an AC drive.
Intelligent Integration and Interconnection Capability of Frequency Converter
Built-in PID controller with preset frequency function for VFD, which can directly connect to closed-loop process control such as pressure and flow. Standard-equipped with RS485 communication interface, compatible with Modbus-RTU protocol, facilitating remote control and system integration with PLC and upper computer, and reducing the difficulty of automation transformation for this inverter drive.
Stable and Reliable Heat Dissipation and Protection Design for AC Drive
The fully sealed structure of the heat dissipation duct for frequency inverter effectively isolates dust and moisture, with strong environmental adaptability. Combined with intelligent air-cooled control, this variable frequency drive has excellent heat dissipation efficiency, ensuring long-term stable operation in the industrial environment of -10℃~40℃. The IP20 protection level complies with industrial on-site installation specifications, reducing the impact of the external environment on the industrial frequency inverter.
Comprehensive Safety Protection System for Frequency Converter
Integrates 9 core protection functions for VFD, including output phase loss, instantaneous current, overvoltage, undervoltage, overheating, overload, overcurrent, braking and short circuit protection. It fully avoids equipment failure risks under heavy-duty working conditions and maximizes the service life of motors and this single-phase AC drive.
Convenient and Adaptable Installation for Inverter Drive
The installation process of this frequency inverter is simple, with two installation methods (wall-mounted and cabinet-type) to adapt to different on-site spaces. The carrier frequency is adjustable from 0.5kHz to 16.0kHz, which can balance low-noise operation and load adaptability, and can match the drive needs of various heavy-duty equipment such as crushers, cranes and pump inverter (pumps) as a professional variable frequency drive.
Specifications
| Power Capacity (KW/HP) | 0.75KW/1HP,1.5KW/2HP,2.2KW/3HP,3KW/4HP | |
| Phase | Single-phase | |
| Input | Voltage Range | 220~240VAC/150VDC~400VDC |
| Rated Frequency | 50/60Hz | |
| Power Factor | ≥0.95 (when input reactor is optional) | |
| Output | Rated Voltage Range | 0~240VAC |
| Frequency Range | 0~600Hz | |
| Overload Capacity | 150% rated current/60s, 180% rated current/3s; | |
| Torque Characteristic | 150% rated torque at 3.0Hz (V/F control); 150% rated torque at 0.25Hz (SVC mode) | |
| Frequency Resolution | Digital setting 0.01Hz; Analog input maximum frequency × 0.025% | |
| Waveform | Pure sine wave | |
| Harmonic Distortion | THD＜2% for linear load; THD＜7% for non-linear load | |
| Control | Control Mode | V/F control (linear, multi-point, N-th power curve), Sensorless Vector Control (SVC) |
| V/F Curve Options | 1.2nd power, 1.4th power, 1.6th power, 1.8th power, 2nd power, supporting VF full separation/half separation mode | |
| Torque Boost | Automatic boost; Manual setting 0.0%~30.0% | |
| Acceleration/Deceleration Time | 0.0s~6500.0s continuously adjustable, supporting S-type and linear mode | |
| Carrier Frequency | 0.5kHz~16.0kHz continuously adjustable, supporting automatic adjustment with temperature | |
| Speed Control Precision | Steady-state precision ≤±0.2% rated synchronous speed; Speed fluctuation ≤±0.5% rated synchronous speed | |
| Torque Response Time | ≤20ms (Sensorless Vector Control) | |
| Motor Parameter Self-detection | Supports static and dynamic parameter automatic detection | |
| Protection Function | Overcurrent | Quick shutdown when overcurrent occurs during acceleration/deceleration/constant speed, with fault code alarm |
| Overvoltage/Undervoltage | Overvoltage:＞760V (configurable); Undervoltage: ＜350V (configurable), graded frequency reduction or shutdown | |
| Overheating | Module temperature ≥75℃ for early warning, ≥100℃ for shutdown | |
| Overload | Dual protection for inverter overload and motor overload, overload early warning coefficient adjustable from 50% to 100% | |
| Phase Loss | Automatic detection, fault alarm and shutdown | |
| Other Protections | Short circuit, module fault, electronic thermal relay, input/output phase loss, motor parameter tuning abnormality, internal memory fault, etc. | |
| Communication & Interface | Communication Interface | RS485 (485+, 485- terminals) |
| Communication Protocol | Modbus-RTU protocol | |
| Baud Rate | 1200BPS~115200BPS adjustable | |
| Data Format | No parity (8-N-2/8-N-1), Even parity (8-E-1), Odd parity (8-O-1) | |
| Analog Input | AI1 (0~10V/0~20mA), AI2 (0~10V); Input impedance 100KΩ (voltage)/500Ω (current) | |
| Analog Output | AO1, AO2 (0~10V/0~20mA), supporting display of 16 physical quantities | |
| Digital Input | 7-channel multi-function terminals (X1~X7), 0~24V level signal, active low | |
| Digital Output | 1-channel open-collector output, 1-channel high-speed pulse output, 2-channel programmable relay outputs | |
| Environmental | Operating Temperature | -10℃~40℃; Derating required when 40℃~50℃ |
| Operating Humidity | 5%~95%RH, no condensation | |
| Altitude | ≤1000m; Derate 10% for every 1000m increase | |
| Vibration Requirement | ＜0.5G (avoid damage from falling) | |
| Structure and Installation | Protection Level | IP20 |
| Cooling Method | Air cooling (with intelligent fan control) | |
| Installation Method | Wall-mounted/Cabinet-type | |
Model Comparison Chart
| ZHB560 Series (Single-Phase VFD) | Power (KW /HP) | Size(MM) L*W*H | N.W(KG) |
| ZHB560-0.75KW | 0.75KW/1HP | 132*78*170 | 0.8 |
| ZHB560-1.5KW | 1.5KW/2HP | 132*78*170 | 0.8 |
| ZHB560-2.2KW | 2.2KW/3HP | 150*95*212 | 1.4 |
Note: The size and weight vary depending on the voltage range, and are subject to the customized actual single-phase frequency inverter product.
Installation Dimensions
Main Unit Dimensions
| Model (Single-Phase AC Drive) | H1(mm) | H2(mm) | W1(mm) | D1(mm) | H(mm) | W(mm) | D(mm) | Mounting Holes(mm) |
| Installation Dimensions | External Dimensions | |||||||
| 0.4KW-2.2KW | 160.2 | 159 | 60 | 11 | 170 | 78 | 132.9 | 5 |
| 3.7KW-5.5KW | 200 | 195 | 78 | 12.5 | 212 | 95 | 150.1 | 5 |
| 7.5KW-11KW | 229 | / | 129 | / | 241.5 | 140 | 179.1 | 5.5 |
Keypad Dimensions
| Dimensions and Cutout Size(VFD Keypad) | Keyboard Height | ||||
| W1(mm) | H1(mm) | W2(mm) | H2(mm) | D1(mm) | D2(mm) |
| 74 | 59 | 70.2 | 54.8 | 17 | 14 |
FAQs
- What is a single-phase Variable Frequency Drive (VFD)?A single-phase VFD (also called frequency inverter) is a power electronic device that converts single-phase AC power into adjustable frequency and voltage to control the speed of AC motors, widely used in small industrial equipment.
- What is the difference between VFD and frequency converter?In industrial applications, they are often used interchangeably—both refer to devices that adjust motor speed by changing frequency. AC drive is another common term for the same type of equipment.
- How to choose a suitable pump inverter or fan inverter for small equipment?Focus on power matching (0.75~3KW for BK-ZHB560 series), control mode (V/F or SVC), and environmental adaptability. This single-phase inverter drive is optimized for small pumps and fans.
- What are the core advantages of BK-ZHB560 as an industrial frequency inverter?It features high overload capacity (150% rated current), low-frequency high-torque output, comprehensive protection functions, and flexible installation—ideal for small-scale heavy-load industrial scenarios.
- Can this variable frequency drive be used as an elevator drive or conveyor drive?Yes, it is designed for mini elevators, small conveyors and other light heavy-duty equipment, with stable starting performance and precise speed control to meet the needs of such applications.
FAQs
What is UPS?
What is the main role of UPS?
What are the types of UPS?
How to choose the power capacity of UPS?
How is the standby time of a UPS determined?
