H901 Series VFD

  • Home
  • H901 Series VFD
Service Image

H901 Series VFD

The H901 Series Variable Frequency Drive (VFD) is a reliable and efficient motor control solution designed for a variety of industrial and commercial applications. Compatible with both three-phase 380V and single-phase 220V AC power supplies at 50/60Hz, the H901 Series operates within a wide input voltage range—380V to 480V for three-phase systems and 220V to 260V for single-phase systems—ensuring flexibility and adaptability in diverse power environments. This VFD delivers output voltages up to 480V or 260V, depending on the input configuration, and supports a broad frequency range. It offers vector control from 0 to 500Hz and V/F control from 0 to 5000Hz, allowing precise speed regulation and smooth motor performance across a wide range of load conditions.

Key Features:

General-Purpose Performance: Ideal for standard motor control applications including fans, pumps, conveyors, and mixers.

Sensorless Vector Control: Provides enhanced torque control and stable operation without requiring feedback sensors.

Energy Efficient: Built-in energy optimization algorithms help reduce power consumption during variable loads.

High Overload Capacity: Handles up to 150% overload for 60 seconds, making it suitable for heavy-duty operations.

Enquiry Now

Product Description

Input Rated voltage, frequency Three-phase AC 380V: 50/60Hz
Single phase AC220 V: 50/60Hz
Voltage allowed Range of change Three - phase AC 380V ~ 480V
Single-phase AC220 V ~ 260 V
Output
Voltage 0 ~ 480V
0 ~ 260V
Frequency Vector control: 0 ~ 500Hz V/F control: 0 ~ 5000Hz
Overload capacity G type machine: 150% rated current for 60s; 180% rated current for 3s.
P-type machine: 120% rated current for 60s; 150% rated current for 3s.
Control method V/F control, speed sensorless vector control (SVC)
Control characteristics Frequency setting Resolution Analog input:   Maximum frequency × 0.025%
Digital settings:   0.01Hz
V/F control V/F Curve - Three types: linear type; multi-point type; N-th power type V/F curve
(1.2, 1.4, 1.6, 1.8, 2)
V/F separation - 2 methods: full separation, semi-separation
Torque boost - Manual: 0.0–30.0% of rated output; Auto boost: torque based on output current and motor parameters.
Automatic current and voltage limiting - Whether in acceleration, deceleration or stable operation, it can automatically detect the motor stator current and voltage, and suppress them within the allowable range based on a unique algorithm, minimizing the possibility of system fault tripping.
Control characteristics Inductive vector control Voltage frequency characteristics: Automatically adjust the output voltage-frequency ratio according to motor parameters and unique algorithm
Torque characteristics: Starting torque: 150% at 3.0Hz (V/F control) and 0.5Hz (sensorless vector control). Operating speed steady-state accuracy: ≤±0.2% of rated synchronous speed; speed fluctuation: ≤±0.5%. Torque response time: ≤20ms (sensorless vector control).
Motor parameter self-determination: Without any restrictions, the automatic detection of parameters can be completed in both static and dynamic conditions of the motor to obtain the best control effect
Current and voltage suppression: Full current closed-loop control, completely avoiding current shock, with perfect over-current and over-voltage suppression function
Undervoltage suppression during operation Especially for users with low grid voltage or frequent grid voltage fluctuations, the system can maintain the longest possible operating time based on unique algorithms and residual energy allocation strategies even when the voltage is below the allowable range.
Typical functions Multi-speed and swing frequency operation 16-segment programmable multi-speed control, multiple operating modes optional. Swing frequency operation: preset frequency, center frequency adjustable, state memory and recovery after power failure.
PID Control RS485 Communication Built-in PID controller (frequency can be preset), standard configuration RS485 communication function
Frequency setting Analog Input: DC voltage 0~10V, DC current 0~20mA (upper and lower limits are optional)
Digital Input: Operation panel setting, RS485 interface setting, UP/DOWN terminal control, and multiple combination settings with analog input
Output signal Digital Output: 2 Y-terminal open collector output and 2 programmable relay output (TA, TB, TC), up to 58 meaning options
Analog Output: 2 analog signal output, the output range is flexibly set between 0~20mA or 0~10V, which can realize the output of physical quantities such as set frequency and output frequency
Automatic voltage stabilization operation According to the needs, you can choose dynamic voltage stabilization, static voltage stabilization, and non-stabilization to obtain the most stable operation effect.
Acceleration and deceleration time setting 0.0s~6500.0s can be set continuously, S-shaped and linear modes are optional
Break Energy consumption brake: Dynamic braking starting voltage, hysteresis voltage and dynamic braking rate can be adjusted continuously.
DC brake: DC braking start frequency at shutdown: 0.00~[F00.10] maximum frequency Braking time: 0.0~100.0s; Braking current: 0%~100% rated current.
Low noise operation The carrier frequency is continuously adjustable from 0.5KHz to 16.0KHz to minimize motor noise
Speed tracking speed Restart function It can realize the smooth restart and instantaneous stop restart function of the running motor
Counter An internal counter to facilitate system integration
Run function Upper and lower frequency limit setting, frequency jump operation, reverse operation limit, slip frequency compensation, RS485 communication, frequency increase and decrease control, fault self-recovery operation, etc.
Display Operation panel display run state      Output frequency, output current, output voltage, motor speed, set frequency, module temperature, PID setting, feedback, analog input and output, etc.

Alarm content      There are eight operating parameter records including output frequency, set frequency, output current, output voltage, DC voltage, module temperature, power-on time, and operating time when three faults trip.
Protective function Overcurrent, overvoltage, undervoltage, module failure, electronic thermal relay, overheating, short circuit, input and output phase loss, abnormal motor parameter tuning, internal memory failure, etc.
Environment Ambient temperature -10°C ~ + 40°C (When the ambient temperature is 40°C ~ 50°C, please use it at a reduced rating)
Ambient humidity 5% ~ 95%RH, no condensation
Surroundings Indoors (no direct sunlight, no corrosion, no flammable gas, no oil mist, dust, etc.)
Altitude Derate for use above 1000 meters, 10% for every 1000 meters increase
Structure Protection level IP20
Cooling method Air cooling, with fan control
Installation Wall-mounted, cabinet-type