The ZONCN Z2400-220G/250P is a high-power variable frequency drive (VFD) designed for industrial air compressor applications. It provides stable speed control, energy-saving operation, and reliable performance for 220kW / 250kW air compressor systems. Suitable for screw air compressors, industrial air compressors, and energy-saving retrofit projects.

Key Features

Control & Performance

• Original ZONCN model Z2400-220G/250P, power class 220kW (G) / 250kW (P)

• Dual control modes: V/F control and sensorless vector control (SVC)

• SVC output frequency range: 0.1-320Hz; V/F mode: 0.1-3200Hz

• Starting torque: 150% rated torque at 0.5Hz (G-type heavy-duty)

• Overload capacity: 150% of rated current for 60 seconds; 180% for 3 seconds (G-type)

• Excellent speed regulation accuracy with fast dynamic response to load changes

Air Compressor-Specific Functions

• Built-in PID controller for constant-pressure air supply

• Automatic motor speed adjustment matching real-time air demand

• Soft start/soft stop reduces starting current surge and mechanical wear

• Optional RS485 / Modbus-RTU communication for remote monitoring and centralized control

• Multiple auxiliary frequency sources (up to 10) with fine-tuning capability

Protection & Reliability

• Comprehensive protection suite: overvoltage, undervoltage, overcurrent, overload, overheat, phase loss, short circuit

• IP20 protection grade for cabinet installation

• Built-in braking unit (standard across the Z2400 range)

• EMC filter integrated for reduced electromagnetic interference

• Forced air cooling for continuous industrial operation

Installation & Maintenance

• Compact cabinet-mount design

• External pull-out keyboard for convenient parameter setting and monitoring

• Easy access to terminals and maintenance points

Air Compressor Energy-Saving Benefits

Why VFD Retrofit?

Air compressors are widely recognized as the "electric tigers" of industrial facilities, consuming 10%-30% of a factory's total electricity. Traditional compressors operating in load/unload mode waste significant energy - the no-load power consumption of a standard screw compressor can reach 35%-40% of full-load power

• Original ZONCN supply channel with verifiable model and label confirmation.

• CE and KC certified for international markets.

• Competitive B2B Pricing.

• Wholesale pricing for bulk orders and project procurement.

• Sample orders accepted for trial and evaluation.

• OEM/ODM and customized packaging available.

  
  

  Technical Support

• Professional model selection assistance for your specific compressor and motor.

• Parameter setting and commissioning guidance.

• Installation and wiring support.

  
  

  Logistics & Service

• Fast delivery: 5-15 working days depending on stock.

• Export-standard wooden case packaging with shockproof and anti-static protection.

• Worldwide shipping by sea, air, and express.

• Responsive after-sales support.

  
  

• Installation & Commissioning Guide

• Pre-Installation Checklist

• Verify the VFD nameplate matches your order (model, power, voltage).

• Confirm motor nameplate data matches VFD power rating.

• Ensure supply voltage is within 380-440V AC range.

• Check for any physical damage during transport.

• Prepare mounting surface capable of supporting VFD weight

  
  

• Installation Environment Requirements

• Ambient temperature: 0-40°C (derate 1.5% per °C above 40°C, max 50°C)

• Relative humidity: ≤ 95% RH, non-condensing

• Altitude: ≤ 1000m (derate above 1000m)

• Installation location: well-ventilated area, away from direct sunlight and heat sources.

• Avoid installation in environments with corrosive gases, excessive dust, or strong electromagnetic interference