Industrial PLC Power Restoration Solution – Mitsubishi FX1N-40MR/60MR | JY331BA8402F
Where This Product Is Used
The Mitsubishi FX1N-40MR/60MR Power Board (JY331BA8402F) is a critical internal replacement component for the Mitsubishi MELSEC FX1N series programmable logic controller. It is specified by maintenance engineers and automation technicians across the following industries and applications:
- Discrete Manufacturing – Assembly line PLCs controlling conveyor sequencing, robotic pick-and-place, and machine interlocking
- Food & Beverage Processing – Hygienic packaging lines, filling machines, and batch control systems requiring high-reliability power regulation
- Textile & Printing Machinery – Tension control, web guiding, and multi-axis coordination panels
- HVAC & Building Automation – Fan coil unit controllers, chiller sequencing, and BMS integration panels
- Water Treatment & Utilities – Pump station controllers, dosing systems, and remote I/O panels
- Semiconductor & Electronics Fab – Cleanroom equipment controllers where power stability is non-negotiable
When the FX1N CPU fails to power on, outputs are erratic, or the unit shows a POWER LED fault, the JY331BA8402F power board is the first-line replacement component to restore full PLC operation without replacing the entire unit.
Technical Specifications
| Attribute | Value |
|---|---|
| Part Number / SKU | JY331BA8402F |
| Compatible Models | Mitsubishi FX1N-40MR, FX1N-60MR, FX1N-40MT, FX1N-60MT |
| Series | MELSEC FX1N |
| Component Type | Internal Power Supply Board (PSU PCB) |
| Input Voltage | 100–240 V AC, 50/60 Hz |
| Output Voltage | 5 V DC (logic), 24 V DC (sensor supply) |
| Country of Origin | Japan |
| Weight | Approx. 4,460 g (packaged) |
| Condition | New / Surplus New |
Why Engineers Specify This Model
- Drop-in Replacement – Exact OEM board geometry and connector pinout; no modification required
- Restores Full I/O Capacity – Supports all 40 or 60 I/O points on the FX1N chassis without derating
- Eliminates Costly CPU Replacement – Replacing only the power board saves 60–80% vs. purchasing a new FX1N CPU unit
- Proven Field Reliability – Mitsubishi Electric’s MELSEC FX series is deployed in millions of machines globally; this board meets the same manufacturing standards
- Fast Swap Maintenance – Designed for field replacement by qualified technicians; typical swap time under 30 minutes
Complete System Bill of Materials
For a complete FX1N control panel restoration or new build, consider pairing this power board with:
- Mitsubishi FX1N-40MR-001 or FX1N-60MR-001 CPU module
- FX1N-232-BD RS-232C communication board
- FX1N-485-BD RS-485 communication board
- FX2N-16EX / FX2N-16EYR expansion I/O modules
- FX1N-CNV-BD connector conversion board
- GX Works2 / GX Developer programming software license
Contact support@konmask.com for bundle pricing on complete FX1N system kits.
Compliance & Industry Standards
- CE Marked – Compliant with EU Low Voltage Directive (LVD) and EMC Directive
- UL Listed – Recognized under UL 508 (Industrial Control Equipment)
- RoHS Compliant – Restriction of Hazardous Substances Directive 2011/65/EU
- IEC 61131-2 – Programmable controllers equipment requirements
- IP20 rated enclosure (when installed in FX1N chassis)
Quality Assurance & Sourcing
All Mitsubishi components listed on Konmask.com are sourced through verified industrial distribution channels. Each unit undergoes the following before dispatch:
- Visual inspection for PCB damage, burnt components, and connector integrity
- Packaging verification against OEM part number label (JY331BA8402F)
- Anti-static ESD packaging for safe international transit
- Batch traceability records maintained for warranty and audit purposes
We do not list counterfeit, refurbished-as-new, or grey-market parts. If a unit does not pass our inspection, it is not listed.
How to Source This Part
- Add to Cart – Click the purchase button above to place an order directly
- Request a Quote – Email support@konmask.com for volume pricing (>5 units) or urgent lead-time requirements
- WhatsApp / Phone – Reach our technical sales team at +0086 19859288691 for same-day response
- Provide Your PLC Serial Number – If unsure of compatibility, share your FX1N unit’s serial number and we will confirm the correct board revision
Typical lead time: 1–3 business days for in-stock units. Express DHL/FedEx worldwide shipping available.
Application-Specific FAQ
Q: Will JY331BA8402F fit both the FX1N-40MR and FX1N-60MR?
A: Yes. The JY331BA8402F power board is shared across the FX1N-40 and FX1N-60 chassis variants. The board dimensions and connector layout are identical.
Q: My FX1N powers on but outputs are unstable – is this the right part?
A: Unstable outputs, intermittent POWER LED, or 24 V sensor supply dropout are classic symptoms of a failing power board. Replacing JY331BA8402F is the recommended first step before replacing the CPU.
Q: Can I install this board myself?
A: Installation requires opening the FX1N enclosure and handling live PCB components. It should be performed by a qualified electrical technician or automation engineer. Always de-energize the panel before servicing.
Q: Do you provide a warranty?
A: Yes. Konmask.com offers a 90-day DOA (Dead on Arrival) warranty on all new components. Contact support within 7 days of receipt if you experience any issues.
Q: Is this compatible with FX1S or FX2N series?
A: No. JY331BA8402F is specific to the FX1N-40 and FX1N-60 chassis. FX1S and FX2N use different power board assemblies. Contact us to identify the correct part for your model.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
