Can the VFD control a permanent-magnet motor?

Yes, but the VFD must support permanent-magnet synchronous motor control. Correct motor parameters and auto-tuning are required.

Can an existing fixed-speed air compressor be converted to variable-speed operation?

In most cases, yes. The motor, control circuit, unloading valve, pressure sensor, and cooling conditions should be checked before conversion.

Can a VFD reduce starting impact?

Yes. Soft starting reduces starting current and mechanical shock, helping protect the power supply, motor, bearings, and transmission components.

What protection functions are recommended?

Recommended protections include overcurrent, overvoltage, undervoltage, overload, overheating, phase loss, short circuit, and abnormal-pressure protection.

What should be considered during installation?

Ensure adequate ventilation, reliable grounding, correct wiring, and separation of power and signal cables. Choose a suitable enclosure rating for the operating environment.

Three-Phase VFD for Industrial Air Compressor Motor Speed Control

Name: Three-Phase VFD for Industrial Air Compressor Motor Speed Control
Brand: Shenzhen Cumark Sci. & Tech. Co., Ltd.
SKU: 2002363871

Guangdong, ChinaShenzhen Cumark Sci. & Tech. Co., Ltd.

US$69.00-650.00

1 Piece

Sample price:US$69.00/piece.Request sample

Product profile

Customization

Available

Application

High-performance Transducer, General Transducer, High Frequency Converter Transducer, Citizen Community Water Supply, High Building Wate

Output Type

Triple

Model NO.

ES560

Switch Mode

PWM Control

Main Circuit Type

Voltage

Function

Elevator Special, Textile Special, Constant Torque Universal Type

Brand

Cumark

Overload Ability Range

Light Load 110% Rated Current 60s, Heavy Load 150%

Control Mode

Vector

Start Torque

0.25Hz/200% (Open Loop)

Built Pid

Have Pid Function

Input Terminals

6 Di, 2ai

Output Terminal

1 Do, 1ao; 1 Relay

Communication

Built-in RS485 Communication

Speed Range

1:200 (Open Loop Control) 1:3000 (Closed Loop Cont

Transport Package

Carton&Wooden Case

Trademark

CUMARK

Origin

China

HS Code

8504409990

Production Capacity

5000 Per Month

Key features

OEM/ODM Services: Custom logo and design available on the product with flexible customization options.

High Production Capacity: Factory capacity reaches 2000 units per month to ensure timely delivery.

Fast Shipping for Inventory: Inventory items can be shipped within 5 days of order confirmation.

Customized Product Delivery: Customized products are delivered within 2 weeks after order placement.

Built-in RS485 Communication: Integrated RS485 communication module for seamless connectivity and control.

Vector Control Mode: Advanced vector control ensures precise motor speed and torque management.

High Start Torque: Delivers 200% start torque at 0.25Hz in open loop mode for heavy loads.

Comprehensive Inspection: 100% visual and functional inspection for all finished products before shipment.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceCooperated with Fortune 500Self-branded

Shenzhen Cumark Sci. & Tech. Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 9 Years CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤2.21h

AI-Powered supplier vetting

SummaryThe supplier is identified as a Shenzhen-based trading company in the manufacturing industry, associated with frequency converters, AC drives, and frequency inverters. It demonstrates broad customization and ODM capabilities, reports new product development in the past year, and provides OEM services for well-known brands. Documented procedures exist for quality assurance, finished-product inspection, corrective and preventive actions, complaint handling, and supplier assessment. Service capabilities include inventory availability, overseas agents or branches, trade-show participation, and lead times within 15 working days in both peak and off-season periods. However, the supplier reports no valid manufacturing contracts with affiliated subcontractors, no overseas warehouse or showroom, no available SDK, and no stated countries for overseas services. The provided financial figures are excluded from this assessment.

CertificationsThe company description states that it has received numerous industry certifications related to reliability and engineering expertise in power electronics, but it does not identify the certifications or provide validity details. Certification presence is supported, although the scope cannot be fully verified.

After-Sales capabilityThe supplier has documented and followed procedures for corrective and preventive actions and customer complaints, describes after-sales support, maintains inventory capability, and reports overseas agents or branches. It also reports no overseas warehouse or showroom, so the service network has some stated limitations.

R&D capabilityThe supplier reports new products within the past year, offers ODM services, and provides broad design-related customization. It also states that no SDK is available, which limits the documented software-development support, but the available evidence supports product-development capability.

Customization capabilityThe supplier explicitly supports customization from samples, designs, full customization, minor customization, and flexible customization, and also offers ODM services. This is direct evidence of a broad customization range.

Product Q&A

Q:What types of air compressors can use a VFD?

VFDs are suitable for screw, piston, and permanent-magnet air compressors. The correct model should be selected according to the motor type.

Q:What are the benefits of using a VFD on an air compressor?

A VFD adjusts motor speed according to air demand, helping save energy, stabilize pressure, reduce unloaded operation, and provide smooth starting.

Q:How much energy can a VFD save?

Typical energy savings range from 10% to 30%, depending on load variation, operating hours, and the original control method.

Q:Can a VFD maintain stable air pressure?

Yes. With a pressure sensor and built-in PID control, the VFD automatically adjusts motor speed to maintain stable system pressure.

Q:How do I select the correct VFD size?

Select the VFD according to the motors rated voltage, current, power, and load characteristics. For air compressors, appropriate capacity margin is recommended.