Variable Frequency Drive PCB Solution – FUJI EP-3965A-C2 | Power Drive Board Series
The FUJI EP-3965A-C2 Power Drive Board is an OEM-grade printed circuit board designed for FUJI Electric variable frequency drives (VFDs). This drive PCB serves as the core power switching and gate-drive interface within the inverter unit, enabling precise motor speed and torque control across demanding industrial environments. Whether you are performing a field repair or building a spare-parts inventory, the EP-3965A-C2 delivers the reliability and compatibility that maintenance engineers depend on.
Where This Product Is Used
The FUJI EP-3965A-C2 Power Drive Board is specified across a wide range of industrial and commercial applications where FUJI Electric VFDs are deployed:
- CNC Machining Centers & Spindle Drives – Maintains precise spindle speed under variable load conditions in metal-cutting and milling operations.
- HVAC & Building Automation – Controls fan and pump motors in air-handling units, chillers, and cooling towers, reducing energy consumption through variable-speed operation.
- Water & Wastewater Treatment – Regulates submersible pump and blower drives in municipal and industrial water systems requiring continuous duty cycles.
- Conveyor & Material Handling Systems – Provides smooth acceleration and deceleration control for belt conveyors, roller tables, and overhead cranes.
- Compressor & Blower Control – Manages air compressor motor drives in pneumatic systems and process-air applications.
- Plastics & Rubber Extrusion – Delivers stable torque profiles for extruder screw drives where consistent melt pressure is critical.
- Textile & Printing Machinery – Synchronizes multi-axis drive systems in weaving, knitting, and web-printing equipment.
- Oil & Gas Pump Stations – Supports variable-speed pump drives in pipeline booster and injection applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | EP-3965A-C2 |
| Manufacturer | FUJI Electric Co., Ltd. |
| Product Type | Power Drive Board (VFD PCB) |
| Compatible Equipment | FUJI Electric Variable Frequency Drives (VFD / Inverter Series) |
| Board Function | Gate drive signal output, power switching interface, IGBT drive control |
| Net Weight | 4.46 kg |
| Condition | New / Surplus New |
| Sourcing | OEM-authorized supply chain |
Why Engineers Specify This Model
- OEM Part Number Accuracy – EP-3965A-C2 is the exact FUJI Electric part number, eliminating cross-reference errors during procurement.
- Drop-in Replacement – Designed to fit the original drive chassis without mechanical or electrical modification.
- Proven Gate Drive Architecture – FUJI’s proprietary IGBT gate drive circuitry ensures low switching losses and robust short-circuit protection.
- Long Service Life – Industrial-grade components rated for continuous duty in high-vibration, high-temperature environments.
- Reduced Downtime – Stocking this board as a critical spare eliminates multi-week lead times associated with factory repair programs.
- Traceability – Each unit ships with full lot traceability documentation to support ISO and audit requirements.
Complete System Bill of Materials
When replacing or servicing a FUJI VFD power section, consider sourcing the following complementary components to ensure a complete and reliable repair:
- FUJI IGBT Power Module (matched to drive kW rating)
- FUJI Control Board / Main CPU PCB
- FUJI Gate Drive Fiber Optic Interface Board
- DC Bus Capacitor Bank (electrolytic, matched capacitance)
- Inrush Current Limiting Resistor / Relay Assembly
- Cooling Fan Assembly (24 VDC or 48 VDC, frame-matched)
- Input EMC Filter Module
- Braking Resistor Unit (if dynamic braking is required)
Contact support@konmask.com for a complete BOM quotation for your specific FUJI drive model.
Compliance & Industry Standards
- CE Marking – Compliant with EU Low Voltage Directive and EMC Directive as part of the FUJI drive system.
- RoHS – Manufactured in accordance with RoHS 2 (2011/65/EU) restrictions on hazardous substances.
- ISO 9001 – FUJI Electric operates under ISO 9001-certified quality management systems.
- UL / cUL Recognition – FUJI Electric VFD platforms carry UL and cUL listings applicable to North American installations.
- IEC 61800 – Designed for use within adjustable-speed electrical power drive systems per IEC 61800 series standards.
Quality Assurance & Sourcing
Konmask.com sources the FUJI EP-3965A-C2 exclusively through verified industrial distribution channels. Every unit undergoes the following quality checks before shipment:
- Visual inspection for PCB damage, component seating, and solder joint integrity
- Part number and date code verification against FUJI Electric documentation
- Anti-static packaging with humidity indicator card
- Lot number and serial traceability recorded at order fulfillment
We do not supply counterfeit, refurbished-as-new, or grey-market components. All stock is sourced from authorized distributors or directly from FUJI Electric’s supply chain.
How to Source This Part
- Confirm Compatibility – Verify the EP-3965A-C2 part number against your drive’s nameplate or service manual before ordering.
- Request a Quote – Email support@konmask.com with your drive model, serial number, and required quantity.
- Lead Time – In-stock units ship within 1–3 business days. Out-of-stock orders are sourced within 7–15 business days.
- Shipping – Worldwide shipping available via DHL, FedEx, and UPS with full tracking and export documentation.
- Payment – T/T bank transfer, PayPal, and major credit cards accepted. Net-30 terms available for qualified accounts.
Application-Specific FAQ
Q: Is the EP-3965A-C2 compatible with all FUJI VFD models?
A: The EP-3965A-C2 is designed for specific FUJI Electric drive platforms. Please provide your drive model number to our technical team for a confirmed compatibility check before ordering.
Q: Can I install this board myself, or do I need a certified technician?
A: PCB replacement in VFDs involves exposure to high-voltage DC bus capacitors. Installation must be performed by a qualified electrical engineer or certified drive technician following FUJI Electric’s service procedures and local electrical safety codes.
Q: Do you offer a warranty on this part?
A: Yes. Konmask.com provides a 12-month warranty against manufacturing defects under normal operating conditions. Warranty claims require return of the defective unit with proof of purchase.
Q: What is the typical failure mode that requires replacing this board?
A: Common failure indicators include drive fault codes related to IGBT overcurrent, gate drive fault, or power module errors. A failed EP-3965A-C2 may also present as a drive that powers on but fails to output voltage to the motor.
Q: Can you supply multiple units for a maintenance spare-parts program?
A: Yes. We support bulk and blanket purchase orders for MRO and spare-parts programs. Contact us for volume pricing and consignment stocking options.
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Contact: support@konmask.com | +0086 19859288691
