Variable Frequency Drive

High-efficiency Vector Control & Remarkable Energy Saving

Our industrial inverter supports SVPWM vector control, stable low-torque output at low speed without motor jitter. Compared with direct startup, it cuts 20%–60% power consumption for fan and pump loads, significantly reducing long-term electricity cost. It acts as a high-performance motor speed controller with adjustable acceleration/deceleration curve to eliminate mechanical impact.

Complete Multi-layer Safety Protection System

This energy saving VFD integrates overvoltage, undervoltage, overcurrent, overload, overheat, short circuit and phase loss protection. It triggers real-time fault alarm codes on the digital display and locks output automatically to avoid motor burnout. The built-in lightning suppression module adapts to unstable industrial power grid environment.

Rich Communication & Flexible Control Modes

Compatible with local panel knob control, external terminal analog signal and RS485 Modbus communication to connect PLC/HMI. It supports multi-segment speed operation, PID constant pressure closed-loop control, jog operation and automatic restart after power failure. Standard terminals reserve expansion space for remote control and linkage system.

Wide Power Range & Diversified Brand Selection

We provide full series vector control inverter from 0.75kW to 315kW, with domestic brands SHENGWANG, INVT, VEICHI and imported SIEMENS servo drives for choice. 220V single-phase / 380V three-phase input optional, small compact wall-mounted models and large cabinet vertical models available to match different equipment layout demands.

Durable Housing & Easy Installation & Maintenance

Adopts high-strength ABS and cold rolled steel shell with dustproof heat dissipation grille, IP20 protection grade for cabinet installation. Humanized button panel with dual digital tube display for real-time data viewing; standardized power terminal layout simplifies wiring, and fault code manual supports quick troubleshooting to cut downtime loss.

◉ Water Pump & Water Supply Equipment: The energy-saving variable frequency drive realizes constant pressure water supply by PID closed-loop control, automatically adjusting pump speed according to water consumption. It avoids frequent pump start-stop, extends pump service life and saves water plant operation electricity cost, applicable to domestic water supply, industrial circulating water and sewage treatment pumps.

◉ Ventilation Fan & Exhaust Machinery: Perfect for workshop exhaust fans, boiler induced draft fans and air conditioning blowers. It adjusts fan air volume steplessly instead of air damper throttling, reducing power waste greatly, widely used in metallurgy, chemical, textile and food factory ventilation systems.

◉ Conveying & Packaging Automation Lines: As precise motor speed controller for belt conveyors, carton packaging machines and labeling equipment. Soft start function eliminates belt tension impact, stable speed ensures consistent production rhythm, supporting multi-section linkage speed matching for automated assembly lines.

◉ CNC & Processing Machine Tools: Matched with engraving machines, drilling machines and cutting equipment, vector control delivers stable low-speed torque to guarantee workpiece processing precision. It supports jog operation and multi-stage speed switching to satisfy flexible processing requirements of small-batch customized workpieces.

Connect input power L1/L2/L3 and motor U/V/W to corresponding terminals correctly, ground the equipment reliably before power on. Adjust acceleration/deceleration time and motor rated parameters via panel PRG button, select local/remote control mode as production demand. Download full PDF operation manual for detailed parameter setting and fault elimination steps before formal running.

What's the difference between domestic inverter and SIEMENS servo drive?

Domestic INVT/VEICHI/SHENGWANG inverters are cost-effective for ordinary speed regulation of fans and pumps; SIEMENS V90 servo drive is for high-precision positioning motion control of automation equipment. We can recommend matched model based on your equipment's precision requirement and budget.

Can this variable frequency drive work with PLC via communication?

Yes, all our inverters reserve RS485 Modbus communication port, compatible with Siemens, Mitsubishi and other mainstream PLC brands. It also supports 0–10V analog signal input for speed regulation, two control ways for flexible selection.

Why does the inverter display fault code and stop running?

Fault codes correspond to abnormal conditions like overload, overheat or phase loss. You can check the cause in attached PDF manual, verify motor load and power supply voltage. Our technical team provides remote online troubleshooting support for bulk order customers.

Do you accept OEM customized inverter parameters and shell printing?

We support preset customer-specific motor parameters before delivery, and print customer logo on inverter shell for bulk orders. Custom control function modification is available, all customized products pass standard CE quality test.