Welcome to the HBDTECH Technical Knowledge Base. Here we answer the most frequently asked questions regarding the selection, commissioning, wiring, and maintenance of our industrial automation products.

**Q1: How do I select between the 550 and 580 series VFDs?**
A: The 550 series is our open-loop sensorless vector converter, ideal for general-purpose applications including pumps, fans, conveyors, centrifuges, and mixers. The 580 series is a closed-loop vector drive designed for high-precision applications requiring encoder feedback, zero-speed high torque holding, and precise speed regulation (such as elevators, cranes, machine tool spindles, and tension winding).

**Q2: Can the PV550 Solar Pump Inverter run directly without batteries?**
A: Yes! The PV550 is specifically engineered for direct PV-to-motor drive without chemical battery storage. It utilizes high-speed MPPT tracking to convert fluctuating solar DC into three-phase AC power. If night pumping is required, an automated dual-supply switch allows seamless AC utility or generator backup.

**Q3: Does the MX3G All-in-One support standard Mitsubishi PLC software?**
A: Absolutely. The PLC controller inside the MX3G is fully compatible with Mitsubishi GX Developer and GX Works2 ladder logic software via USB Type-C or RS232, while the HMI is programmed with user-friendly TPWorks editor software.

**Q4: What warranty and technical support does HBDTECH provide?**
A: HBDTECH provides an 18-month factory warranty on all drive and automation hardware, backed by round-the-clock technical engineering consultation and lifetime spare parts support.