VFD Frequency Conversion Control Cabinet

Stepless Energy-saving Speed Regulation, Greatly Reduce Equipment Power Consumption

Adopts high-performance vector inverter, realizes smooth stepless speed adjustment without mechanical impact. Compared with direct start operation, it saves 20%~45% electric energy for fans and water pumps, effectively reducing enterprise long-term electricity operating costs.

Soft Start & Stop Function, Protect Motor & Mechanical Equipment

No instantaneous large impact current during startup, the starting current is controlled within 2 times rated current, avoiding instantaneous voltage drop impact on the power grid. Slow acceleration and deceleration reduce wear of bearings, belts and pipes, extending motor and pipeline service life by more than 3 times.

Complete Multi-layer Safety Protection System

Integrated overcurrent, overload, overvoltage, undervoltage, phase loss, short circuit, overheating and stall protection. Once abnormal operation occurs, the inverter will automatically stop and trigger sound-light alarm, storing fault codes for maintenance staff to quickly locate failure causes.

Intelligent PLC Linkage Control, Support Local & Remote Dual Operation

Built-in industrial PLC programmable controller, realize multi-equipment interlocking logic control. Equipped with touch screen optional, support 485/Modbus communication to connect central control room, realize remote parameter modification, real-time operating data monitoring and automatic fault uploading.

Modular Internal Layout, Full Customization For Different Working Conditions

Adjustable galvanized mounting cross beams inside the cabinet, reserved sufficient wiring space. Inverter brands (ABB, Delta, CHNT, RENLE), power size, control logic and cabinet size can be fully customized according to user equipment power and process requirements.

◉ Municipal Water Supply & Sewage Pump Station: Constant pressure water supply frequency conversion cabinet, automatically adjust pump speed according to pipeline pressure, stable water pressure and obvious energy saving effect, widely used in residential water supply and sewage treatment plants.

◉ Factory HVAC & Ventilation System: Fan frequency conversion control cabinet, automatically adjust air volume according to workshop temperature and dust concentration, reduce idle power consumption of ventilation fans.

◉ Mining & Conveying Equipment: Belt conveyor frequency conversion cabinet with soft start function, avoid belt fracture caused by instant impact, stable operation under heavy load transportation conditions.

◉ Chemical Plant Mixer & Agitator: Anti-corrosion type frequency conversion control cabinet, adjustable mixing speed according to production process, equipped with over-torque protection to prevent material jamming damage to the motor.

◉ Commercial Building Central Air Conditioning: Multi-machine combined frequency conversion cabinet, linkage control of multiple air conditioning water pumps and cooling fans, realize building intelligent energy-saving central air conditioning management.

Calculate matching inverter power according to motor rated power before customization. Complete PLC logic program debugging after cabinet assembly. Set upper and lower speed limits and protection action parameters according to on-site process requirements. Download full English operation & maintenance PDF for wiring and fault troubleshooting steps.

Q: What brands of inverters can be installed inside the control cabinet?

A: We support mainstream brands including ABB, Delta, CHNT, RENLE, Siemens, Schneider. We can match corresponding brand inverters according to customer brand preference and budget.

Q: Can this frequency conversion cabinet realize constant pressure water supply automatic control?

A: Yes. We can configure pressure transmitters and PID closed-loop control programs. The PLC automatically adjusts pump speed to maintain stable pipeline pressure without manual intervention.

Q: What is the difference between frequency conversion soft start and direct motor start?

A: Direct start produces 6~8 times rated impact current, easily causing grid voltage drop and mechanical damage; frequency conversion soft start limits starting current within 2 times rated current, with smooth acceleration and obvious energy-saving advantage.

Q: Can multiple pumps realize alternate operation and standby automatic switching?

A: We can customize multi-pump linkage control logic, realize automatic alternate operation of main and standby pumps, and automatically start standby pump when the main pump fails to ensure uninterrupted water supply.

Q: Is the cabinet suitable for outdoor humid workshop environment?

A: Standard cabinet is IP30 indoor type; we can upgrade to IP54 rainproof and dustproof stainless steel cabinet with internal dehumidification fans for outdoor and high-humidity workshop scenarios.