Schneider 14857820312A04 Replacement for Altivar Series

Product Overview

Schneider 14857820312A04 Replacement for Altivar Series: Seamless Transition & Legacy System Upgrade

When your Schneider Electric Altivar variable frequency drive system reaches end-of-life or a critical control board fails, unplanned downtime can cost thousands per hour. The 14857820312A04 / W814857810111A01 Drive Control Board is a direct-fit replacement and upgrade solution engineered for smooth migration from legacy Altivar drive platforms — including discontinued models — to a fully operational, tested, and warranted control board without rewiring your cabinet or reprogramming your PLC from scratch.

This board is the core intelligence of the Altivar drive system, governing motor speed regulation, torque control, fault diagnostics, and communication with upstream controllers. Whether you are replacing a failed board in an Altivar ATV71, ATV61, or an earlier Altivar 58 series drive, or upgrading a control cabinet that has been running on aging hardware for over a decade, this replacement unit is pre-tested and ready for installation.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful Altivar drive control board migration rarely involves a single component. In practice, field engineers replacing the 14857820312A04 board often simultaneously address adjacent components that have experienced equivalent wear or compatibility drift. During the retrofit process, the Altivar ATV71 power board should be inspected alongside this control board, as both boards share the same DC bus and thermal environment — simultaneous replacement eliminates a second service call. If your drive communicates over a fieldbus network, the Altivar communication option card (such as the VW3A3307 Profibus DP module or VW3A3310 CANopen card) must be verified for firmware compatibility with the replacement control board before commissioning.

For sites running a Modicon M340 or Modicon M580 PLC as the upstream controller, the drive’s Modbus RTU or EtherNet/IP configuration parameters should be exported via SoMove software before the board swap and re-imported after installation — this eliminates manual re-entry of speed references, acceleration ramps, and fault response settings. Engineers working on multi-drive panels should also check the Altivar ATV71 braking resistor module and associated line reactor for signs of thermal degradation, as these passive components often reach service limits at the same time as the control board in high-cycle applications.

In control cabinets where the Altivar drive is mounted alongside a Schneider Electric Zelio Logic smart relay or a Modicon TM221 compact controller, the I/O wiring to the drive’s analog and digital terminals (AI1, AI2, DI1–DI6, AO1, R1, R2) remains fully compatible with this replacement board — no terminal rewiring is required. For legacy installations using a Twido programmable controller that has reached end-of-support, this board replacement is often the first step in a phased migration toward a Modicon M221 or M241 architecture, allowing the drive layer to be modernized while the controller upgrade is planned separately.

Sites that rely on an Altivar Process ATV630 or ATV930 for newer installations can use this 14857820312A04 board to maintain the legacy ATV71 drives in parallel during a staged fleet upgrade, ensuring production continuity without a full simultaneous drive replacement across the line. The Magelis HMIGTO HMI panel connected via Modbus TCP to the drive system will continue to display drive status and fault codes without any HMI program modification after the board replacement.

Retrofit Guidance FAQ

Q: Do I need to rewire the drive cabinet after replacing this control board?
A: No. The 14857820312A04 board uses the same OEM connector layout as the original board. All existing wiring to the drive’s control terminals — including analog inputs, digital inputs, relay outputs, and fieldbus connectors — remains in place. Only the board itself is swapped.

Q: Will my existing PLC program need modification?
A: In most cases, no. If your Modicon or third-party PLC communicates with the drive via Modbus RTU or CANopen using standard drive function codes, the communication mapping remains identical. We recommend backing up drive parameters via SoMove before replacement and restoring them after installation to confirm all setpoints are preserved.

Q: Is this board compatible with Profibus DP communication?
A: The control board itself supports the drive’s native communication architecture. Profibus DP functionality depends on the installed VW3A3307 option card, which remains in place during the board swap. Profibus node address and baud rate settings are stored in the option card and are not affected by the control board replacement.

Q: What if my drive enclosure is a custom or non-standard cabinet?
A: The board mounts directly into the Altivar drive chassis using the original snap-in retention clips. Cabinet dimensions and DIN rail arrangements are not affected. Drives installed in IP54 or IP65 enclosures do not require any gasket or seal modification.

Q: How do I verify the replacement board is functioning correctly after installation?
A: Power up the drive with the motor disconnected and confirm the keypad or HMI displays the correct drive rating and firmware version. Run a no-load test at low speed reference (5–10 Hz) before reconnecting the load. Check for any fault codes (particularly F001–F099 range) and clear them after confirming wiring integrity. Full commissioning should follow the Altivar ATV71 programming manual.

Warranty Assurance

Every 14857820312A04 / W814857810111A01 Drive Control Board shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to shipment, each board undergoes a multi-point functional inspection including power-on verification, connector integrity check, and visual inspection for component damage or counterfeit indicators. Boards that do not pass inspection are not shipped.

If a warranty claim arises within the 12-month coverage period, TOPNLMS will arrange a replacement unit or issue a refund based on the fault assessment. Our after-sales response target is within 24 business hours of claim submission. Customers are not required to return the defective unit before a replacement is dispatched in confirmed warranty cases, subject to photographic fault documentation.

All orders are shipped from our Xiamen warehouse with full tracking. Standard lead time for in-stock units is 3–5 business days internationally. Express shipping options are available for urgent breakdown situations. Each shipment includes a packing list, inspection record, and warranty certificate.

For procurement inquiries, bulk orders, or technical pre-sales consultation, contact our industrial automation team directly.