Industrial Servo Inverter VFD 0-400Hz Adjustable Speed Full Protection For Pumps & Fans

Industrial Servo Inverter VFD: 0-400Hz Adjustable Speed, Full Protection For Pumps & Fans

1. Core Features

• Wide Speed Range (0-400Hz)
  • Enables precise speed control for low-speed (e.g., gentle fan rotation) and high-speed (e.g., centrifugal pump acceleration) applications.
  • Supports soft start/stop to reduce mechanical stress and energy consumption.
• Full Motor Protection Suite
  • Overload Protection: Automatically trips if current exceeds rated capacity (e.g., 150% overload for 1 minute).
  • Overvoltage/Undervoltage Protection: Safeguards against voltage surges (e.g., lightning strikes) or drops (e.g., grid instability).
  • Overheating Protection: Monitors IGBT temperature and shuts down if thermal limits are exceeded.
  • Phase Loss Protection: Detects missing phases (e.g., L1, L2, L3) and prevents motor burnout.
  • Ground Fault Protection: Isolates the system during insulation failures to prevent electric shocks.
• Optimized for Pumps & Fans
  • PID Control: Adjusts motor speed in real-time to maintain constant pressure (pumps) or airflow (fans), reducing energy waste by up to 30%.
  • Sleep/Wake Function: Automatically powers down pumps/fans during idle periods (e.g., nighttime) and restarts when demand resumes.
  • Dry Run Protection: For pumps, detects low liquid levels and stops the motor to prevent damage.

2. Technical Specifications

3. Key Applications

• Centrifugal Pumps
  • Challenge: Throttling valves waste energy when reducing flow.
  • Solution: VFD adjusts pump speed to match demand, cutting power use by 40% (e.g., HVAC cooling towers).
• Axial Flow Fans
  • Challenge: Fixed-speed fans cause noisy operation and excessive airflow.
  • Solution: VFD ramps down fan speed during low-demand periods (e.g., nighttime ventilation), reducing noise by 10dB.
• Water Treatment Systems
  • Challenge: Manual control leads to inconsistent chemical dosing.
  • Solution: VFD integrates with flow meters and PID loops to maintain precise dosing rates (e.g., chlorine injection pumps).

4. FAQs

• Q: Can this VFD handle single-phase motors?
  A: No, it requires three-phase motors. For single-phase applications, use a phase converter or a dedicated single-phase VFD.

• Q: How often should I perform maintenance?
  A: Check cooling fans and heat sinks every 6 months. Replace capacitors every 5–7 years.

• Q: Is IP55 necessary for indoor use?
  A: Not required, but IP55 models resist dust and accidental water splashes, extending lifespan in workshops.

GuangDong Zhufeng Electric Co.,LTD established in 2004, is a national high-tech and energy save enterprise with approval by National Development and Reform Commission. Focusing on the development and production and sale of products of “energy saving and control speed and variable speed” , Zhufeng has been a very good supplier for energy saving and automation control solutions . With it’s own brands: “ACI”,“ZFENG”, Zhufeng has developed DLT series products including vector and universal variable frequency drive, servo system, energy saving cabinet, industrial power saver, soft starter etc. Applications including ceramic, machinery, petrochemical, metal, textile, food, papermaking, cement, water supply, plastic injection, central air-conditioning, smart building,etc.