Description
Technical Parameters
- Manufacturer: REFU Elektronik
- Model Number: BS7397.04
- Specification: SP:02
- Module Type: Logic/Control Printed Circuit Board
- System Compatibility: REFU Drive Systems / Power Converters
- Signal Interface: Integrated analog and digital I/O for drive regulation
- Control Logic: Embedded microprocessor architecture for motor control synchronization
- Power Supply: Internal bus voltage (typically 24V DC logic level)

Product Datasheet
| Specification | Details |
|---|---|
| Model | BS7397.04 |
| SP Number | SP:02 |
| Origin | Germany |
| Dimensions | 18.5 cm x 14.0 cm x 2.5 cm |
| Weight | 0.46 kg |
| PCB Layer Count | Multilayer high-density board |
| Operating Temp | 0°C to +55°C |
| Coating | Conformal coating for industrial environment protection |
Application Fields
The BS7397.04 module is a core processing unit in high-power electronics:
- Variable Frequency Drives (VFD): Managing frequency switching and PWM signal generation.
- Solar Inverters: Processing DC-to-AC conversion logic in large-scale photovoltaic systems.
- Industrial Automation: Centralized control for high-torque motor applications in manufacturing.
- Power Quality Systems: Regulation of active filters and reactive power compensation modules.
Product Instructions
- De-energize: Ensure the drive or converter has been powered down for at least 10–15 minutes to allow internal capacitors to discharge.
- ESD Handling: Use a grounded wrist strap. Handle the BS7397.04 strictly by its edges to prevent static damage to the logic chips.
- Removal: Carefully disconnect any ribbon cables or fiber optic links. Unscrew the mounting pillars securing the PCB to the chassis.
- Installation: Align the board with the connector headers on the motherboard. Apply even pressure until fully seated.
- Re-commissioning: Check all connections before powering up. Use REFU-specific diagnostic software to verify firmware versions and board status.
Q&A
Q1: What does the “SP:02” designation indicate? A1: This represents a specific hardware software pairing or assembly variation. It is vital to match this “SP” number to ensure the module is fully compatible with your existing drive parameters.
Q2: Can this board be used for grid-tie inverter applications? A2: Yes, REFU Elektronik modules of this series are frequently used in grid-tie power converters to manage phase-matching and synchronization logic.
Q3: How do I troubleshoot a “Control Error” LED on this board? A3: First, verify the logic power supply (24V). If the power is stable, a control error often points to a firmware mismatch or a failure in the communication bus interfacing with the power stage.
Recommended Similar Models
- REFU Elektronik BS7397.01
- REFU Elektronik BS7397.05
- REFU Elektronik RD51.1-4B
- REFU Elektronik 301.1234
- REFU Elektronik BS7200.01

