Schneider Electric 14857820312A04 W814857810111A01 Control Board: Specs, Compatibility & Availability

Technical Dossier

Product Details And Specifications

Schneider Electric 14857820312A04 W814857810111A01 Series: Comprehensive Control Board Range and Technical Overview

The Schneider Electric part number 14857820312A04 (assembly reference W814857810111A01) is a drive control board (PCB assembly) used in Schneider Electric Altivar series variable frequency drives (VFDs). These drives are deployed globally in heavy industrial environments including petrochemical refineries, nuclear power auxiliary systems, offshore platforms, cement plants, and steel mills. The Altivar control board platform underpins motor control logic, gate drive signal generation, feedback processing, and fault diagnostics across a wide power range. As a critical spare part, this board is subject to long lead times from OEM channels, making third-party sourcing and lifecycle support essential for plant maintenance teams operating aging drive infrastructure.

The Evolution of Schneider Electric Altivar Control Board Architecture

Schneider Electric's Altivar drive series has evolved through multiple generations since the early 1990s. The ATV16 and ATV18 series established the foundational architecture for compact VFD control, using discrete analog signal processing and basic V/f control. The ATV28 and ATV31 series introduced IGBT gate driver integration onto the control board, reducing component count and improving switching reliability. The ATV312 and ATV320 generations — to which the 14857820312A04 board belongs — represent the mature mid-range platform, featuring embedded fieldbus communication (Modbus RTU, CANopen), advanced motor control algorithms (sensorless flux vector), and modular I/O expansion capability. The ATV340 and ATV600 series subsequently migrated to ARM-based SoC architectures with Ethernet-native communication, rendering the ATV312-generation control boards a legacy but still widely installed platform. Compatibility between generations is not maintained at the board level; replacement must match the exact drive power stage and firmware revision.

Schneider Electric Altivar Control Board Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified range of Schneider Electric Altivar series control and interface boards commonly sourced as spare parts. Each entry reflects a distinct functional role within the drive system.

14857820312A04 / W814857810111A01: Main control PCB assembly for ATV312 series drives; handles motor control logic, I/O processing, and fieldbus interface.
VW3A3608: CANopen communication card for ATV312/ATV320; enables network integration into CANopen master systems.
VW3A3616: Modbus TCP / EtherNet/IP communication module for ATV320 series; dual-port Ethernet with DLR support.
VW3A3601: Modbus RTU serial communication card; RS-485 interface for legacy SCADA integration.
VW3A3618: PROFIBUS DP communication card for ATV320; supports GSD file-based configuration.
VW3A3619: DeviceNet communication card for ATV320; compatible with Allen-Bradley PLC networks.
VW3A3620: EtherCAT communication card for ATV320; sub-millisecond cycle time for motion-critical applications.
VW3A3627: PROFINET IO communication card for ATV320; supports MRP and I&M identification.
VW3A3628: Ethernet Powerlink communication card for ATV320; used in B&R Automation Studio environments.
VW3A3501: I/O extension card for ATV312/ATV320; adds 3 digital inputs, 1 digital output, 1 analog input.
VW3A3502: Extended I/O card with relay outputs for ATV320; adds fault relay and run relay contacts.
VW3A3503: Encoder feedback card for ATV320; supports incremental encoders up to 500 kHz input frequency.
VW3A3510: Safety function card for ATV320; implements STO (Safe Torque Off) and SS1 per IEC 62061 SIL 2.
VW3A3720: Graphic keypad display unit for ATV320; remote mounting up to 3 m cable distance.
VW3A3601R: Replacement Modbus RTU card with revised firmware for ATV312 end-of-life support.
VW3A3608R: Revised CANopen card with extended temperature rating for ATV312 installed in outdoor enclosures.
GV3P40: Motor circuit breaker used in conjunction with ATV312 drives for upstream protection coordination.
LXM32MD18N4: Servo drive control board (Lexium 32 series); related Schneider motion control platform sharing fieldbus card architecture.

Sourcing Hard-to-Find & Obsolete Schneider Altivar Control Board Parts

The ATV312 series entered end-of-active-production status, with Schneider Electric transitioning customers toward the ATV320 and ATV340 platforms. However, the installed base of ATV312 drives in continuous-process industries — where drive replacement requires process shutdown and re-commissioning — remains substantial. DriveKNMS maintains a dedicated inventory of ATV312-generation control boards including 14857820312A04 and associated interface cards sourced from decommissioned equipment, authorized surplus channels, and factory-refurbished stock. All boards are stored in ESD-safe environments with humidity and temperature control. For plant engineers managing 5–15 year maintenance horizons on existing ATV312 installations, DriveKNMS provides: confirmed part availability with lead time quotation within 24 hours; cross-reference verification against drive serial number and firmware version; and long-term supply agreements for multi-unit spare part kits.

Quality Control for the Schneider Altivar Control Board Range

Control boards in the ATV312 and ATV320 series incorporate multi-layer PCB designs with high-density SMD components, IGBT gate driver ICs, isolated power supply sections, and multi-channel ADC circuits for current and voltage feedback. DriveKNMS applies the following test protocol to all boards in this range before shipment: (1) Visual inspection under 10× magnification for solder joint integrity, capacitor condition, and trace damage. (2) In-circuit power-up test at rated DC bus voltage with current-limited bench supply to verify power section isolation. (3) Functional test using a compatible ATV312 drive chassis: motor control output verification across V/f and sensorless vector modes. (4) Fieldbus communication test: Modbus RTU loopback and CANopen NMT state machine verification where applicable. (5) Thermal cycling: 30-minute soak at 55°C operating temperature to screen latent solder joint failures. (6) Final firmware version check and documentation of tested revision against shipment record.

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