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Pump Variable Frequency Drive VFD for Pumps with PID Control and Dry-Run Protection for Water Systems
US$1.00-9,999.00
1 Piece
Product profile
Customization
AvailableApplication
Three Phase Transducer, General TransducerOutput Type
SingleModel NO.
zhongping79vfd31Principle of Work
V/F Control TransducerSwitch Mode
PWM ControlMain Circuit Type
VoltageVoltage of Power Supply
Low Voltage Variable-Frequency DriveLink of Transformation
AC-DC-AC Variable-Frequency DriveNature of DC Power
Current Variable-Frequency DriveFunction
Energy Conservation and Efficiency EnhancementBrand
OtherTransport Package
CartonSpecification
4.1KGTrademark
SchneiderOrigin
ChinaHS Code
8504409999Production Capacity
1000PCS/YearKey features
PID Control Integration: Built-in PID controller ensures precise pressure, flow, and level maintenance with automatic speed adjustment.
Dry-Run Protection: Detects low water conditions and shuts down the motor immediately to prevent pump damage and burnout.
Significant Energy Savings: Reduces energy consumption by 20% to 50% by matching motor speed to actual system demand.
Soft Start and Stop: Controlled acceleration and deceleration ramps reduce mechanical stress and eliminate water hammer effects.
High Power Factor: Inherently high power factor (0.95-0.98) eliminates the need for external power factor correction capacitors.
Harmonic Mitigation: Advanced designs reduce harmonic distortion to comply with IEEE 519 standards and improve power quality.
Flexible Customization: Offers full customization, minor customization, and flexible customization options from samples or designs.
Fast Response Time: PID loop executes within 5-10 ms for rapid adjustments to maintain precise system parameters.
Company profile
CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 3 years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤2.50h
AI-Powered supplier vetting
SummaryThe supplier is identified as a professional technical supplier providing 3D software design, ODM, industrial automation, product sales, installation, commissioning, maintenance, and repair services. It supports extensive customization and has documented finished-product inspection instructions, quality assurance, and stated lead times within 15 working days in both peak and off-peak seasons. However, it has no overseas showrooms, agents, branches, or offline trade-show experience, and no new products were developed in the past year. Supplier-management, corrective-action, and complaint-handling procedures exist but lack written records. Certification is listed as NIL, quality-control staffing is below five, and R&D engineer experience totals two years. Export activity is established, with 31%–40% of sales from exports and three years of export experience. Evidence of specific customer cases is not provided.
Supplier typeThe supplier explicitly identifies itself as a professional technical supplier and provides industrial automation-related one-stop services, including product sales, solutions, installation and commissioning, maintenance, and repair. Its stated focus covers cement, packaging, printing, rubber, textile, and machine-tool industries.
CertificationsSupplier management system certification is explicitly recorded as NIL. The provided information therefore does not demonstrate possession of relevant certifications.
After-Sales capabilityThe supplier states that it provides installation, commissioning, maintenance, and repair services and has a quality-assurance system. However, it has no overseas showroom, agent, or branch, and its complaint-handling procedure has no written records, limiting evidence of formalized after-sales execution.
Production capacityThe supplier reports lead times within 15 working days during both peak and off-peak periods, maintains written and uniformly followed finished-product inspection instructions, and lists annual production output above the stated threshold. Nevertheless, quality-control staffing is below five and the service-capability assessment procedure has no records.
Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. The same capability is confirmed in two slices, providing direct evidence of broad customization coverage.
Product Q&A
Q:What is the typical response time for a VFD's built-in PID controller in a water system?
A:
VFD-based PID control offers the fastest response, typically with a cycle time of 5-10 ms, as the loop executes directly within the drive's processor. This is crucial for applications requiring rapid adjustments to maintain precise pressure or flow.
Q:How does the dry-run protection feature work?
A:
Dry-run protection typically operates by monitoring motor current, voltage, or using external sensors to detect a lack of fluid. When insufficient water is sensed, the VFD rapidly shuts down the motor to prevent damage.
Q:Can a VFD with PID control replace a standalone PID controller?
A:
Yes, a VFD with a built-in PID controller can often replace a standalone unit, simplifying wiring and reducing system complexity. It integrates the control loop directly into the drive, eliminating the need for separate controller wiring.
Q:What are the energy savings I can expect from using this type of VFD in a water system?
A:
Energy savings typically range from 20% to 50% compared to fixed-speed pumps, achieved by matching motor speed to actual demand.
Q:How do I determine the correct VFD size for my pump application?
A:
Sizing should be based on the motor's full-load current (FLA) and the application's overload requirements, not solely on horsepower. Consult the motor nameplate and VFD specifications.
Send Inquiry
*To:
Beijing Zhongping Technology Co., Ltd.
Beijing Zhongping Technology Co., Ltd.*Content:
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