The SD350 Induction Heating Power Supply Control Board adopts a high-speed DSP core architecture design, suitable for induction heating applications with power up to 300KW. It operates at a frequency range of 0.4KHz-100KHz and features a highly digitalized, precision-engineered design. It supports both remote and on-site control methods. As a third-generation product independently developed and produced by Sine Power, this induction heating power supply represents internationally advanced technology and utilizes IGBTs as inverter components.

The control board includes functions such as phase-loss protection, constant current output, constant power output, over-voltage protection, constant temperature output, over-current protection, short-circuit protection, and operational status indication. It offers characteristics like wide-frequency adaptability, excellent resistance to voltage fluctuations, high power factor, high efficiency and energy savings, and an intelligent protection system. It is suitable for thermal processing industries involving metal materials, including heat treatment, thermal assembly, welding, and smelting.

This main control board continues to lead innovation in core control algorithms and software technologies within the industry. The structure and processing speed of the control software package ensure that all control loop adjustments are completed rapidly. Additionally, it demonstrates reliable stability and strong anti-interference capabilities, employing unique interference prevention measures to operate normally even in harsh environments. The control board features comprehensive self-diagnostic and load operation protection functions, including power fault protection, over-voltage protection, overload protection, and short-circuit protection. As a result, whether from external or internal sources, various interferences and fault signals are effectively managed by the aforementioned protections, making the control board safer and more reliable. Input and output are fully isolated, offering a wide range of applications. It includes complete fault detection, alarm indication, and protection functions. All parameters are digital, eliminating temperature drift and improving adjustment accuracy and power utilization efficiency.

• Related Product Comparison and Recommendations

| Model                  | SD300           | SD310        | SD320          | SD330        |

| Main Control Architecture | Dual DSP + CPLD | DSP          | Dual DSP + CPLD | DSP          |

| Auto Frequency Tracking | Series Resonance, Auto Tracking | Series Resonance, Auto Tracking | Parallel Resonance, Auto Tracking | Parallel Resonance, Auto Tracking |

| Recommended Power Range | Up to 5000KW    | Up to 600KW   | Up to 1000KW    | Up to 100KW   |

| AD Sampling Precision   | 16-bit High Precision | 16-bit Standard Precision | 16-bit High Precision | 16-bit Standard Precision |

| Control Mode            | PSM/PFM/DCM     | PSM/PFM/DCM  | Thyristor Power Control | Chopper Power Control |

| Input/Output Isolation  | Full Isolation  | Full Isolation | Full Isolation  | Full Isolation |

| Power Supply Design     | Branded Dual-Isolated Power Supply | Branded Dual-Isolated Power Supply | Branded Dual-Isolated Power Supply | Branded Dual-Isolated Power Supply |

| Input Control Ports     | 12 Fully Isolated | 8 Fully Isolated | 12 Isolated      | 8 Fully Isolated |

| Output Control Ports    | 10 Relay Outputs | 4 Relay Outputs | 10 Relay Outputs | 4 Relay Outputs |

| RS485 External Communication | Yes            | Yes           | No              | Yes          |

| RS232 Screen Communication | Yes            | Yes           | Yes             | Yes          |

| Hardware & Software Features | High-End, Powerful | High-End, Powerful | High-End, Powerful | High-End     |

| Anti-Interference       | High Reliability | High Reliability | High Reliability | High Reliability |

| Cost-Effectiveness      | Higher Price    | High Cost-Effectiveness | Higher Price     | Moderate Cost-Effectiveness |