A new breakthrough has been achieved in inverter PID control technology: the era of intelligent constant pressure water supply has fully begun.
With the rapid growth in demand for industrial automation and energy conservation, the built-in PID (Proportional-Integral-Derivative) control function of frequency converters is becoming a focus of the industry. PID technology automatically adjusts motor speed by comparing setpoints with sensor feedback values in real time, achieving precise process control of pressure, flow, temperature, etc., and is widely used in constant pressure water supply, HVAC systems, industrial processes, and other fields. Compared with traditional relay control, PID can reduce water hammer, lower energy consumption by more than 30%, and significantly improve system stability.
The latest generation of PID algorithms further optimizes response speed and anti-interference capabilities, supporting advanced functions such as adaptive parameter adjustment, multi-pump master-slave linkage, anti-freeze circulation, and pipe burst detection, making "unattended operation" a reality. Industry experts say, "PID is no longer a simple closed loop, but the core of intelligent process control, driving the evolution of frequency converters from speed control tools to system brains."
ZK Electric significantly upgrades its ZK600-P solar pump inverter.
ZK Electric keeps up with the trend, and the latest firmware has deeply integrated advanced PID control into the ZK600-P series. This model is specifically designed for hybrid solar + mains power pump systems. It features a built-in professional PID algorithm, enabling 24/7 constant pressure water supply with photovoltaic priority, automatic seamless switching, and mains power supplementation. Under sufficient sunlight, it operates 100% MPPT photovoltaic drive; in low light conditions, it automatically switches to mains power within 20 seconds and switches back to photovoltaic power 5 minutes after sunlight recovers, requiring no external PLC or relays.
Product Features
- Maximum power point tracking (MPPT), fast response speed, stable operation
- Suitable for high-speed, high-frequency pump, PMSM, and synchronous motors run without tuning
- Dry running (load) protection, minimum speed protection, maximum current protection, minimum power input protection, phase loss protection, overcurrent protection
- PQ (power/flow) performance curve can calculate the flow output of the pump
- Compatible with dual-mode AC and DC power input
- Self-defined digital and analog level sensor for water full and low water protection
- Independent air duct design and enhanced three-proof paint protection, suitable for various damp and dusty harsh conditions
- Imported Infineon/Fuji and other IGBT modules to ensure product quality
- Enhanced lightning protection components
- Remote control module, used for remote monitoring, control, parameter modification, etc
- The MPPT efficiency with 99.8%, and the inverter power factor is not lower than 0.96 for inverters below 15KW.
The PID upgrade of the ZK600-P marks the beginning of a "new era of intelligent hybrid" for photovoltaic pump inverters. Free firmware updates are now available.
