Schneider Electric Altivar 61 (ATV61) Modules: ATV61HU40N4

Technical Dossier

Product Details And Specifications

Schneider Electric Altivar 61 (ATV61) Series Technical Notes

The Altivar 61 (ATV61) is Schneider Electric's dedicated variable speed drive platform engineered for pump and fan applications in continuous-process heavy industries. Deployed across petrochemical complexes, nuclear auxiliary systems, offshore platforms, and municipal water treatment facilities, the ATV61 series occupies a critical position in global installed base inventories. Its power range spans 0.75 kW to 630 kW (400 V class), with dedicated variants for 200 V, 500 V, and 690 V networks. The ATV61HU40N4 specifically addresses 4 kW / 400 V three-phase applications, representing one of the highest-volume SKUs in the mid-range segment. The series is fully compliant with IEC 61800-5-1 and carries CE, UL, and cUL certifications, making it suitable for both European and North American plant environments.

The Evolution of ATV61 Architecture

The ATV61 was introduced in the mid-2000s as a successor to the Altivar 58 (ATV58) platform, inheriting its core IGBT-based PWM topology while adding an integrated EMC filter, a built-in braking transistor (up to 22 kW), and a modular communication architecture. Early firmware revisions (V1.x) established the baseline motor control algorithms — voltage/frequency (V/f) and sensorless flux vector (SVC). Subsequent firmware generations (V2.x, V3.x) introduced enhanced PID control for pump-specific functions: anti-cavitation detection, pipe-fill mode, and sleep/wake logic.

Communication compatibility evolved in parallel. The ATV61 supports interchangeable fieldbus cards: VW3A3301 (Modbus/Uni-Telway), VW3A3302 (CANopen), VW3A3303 (DeviceNet), VW3A3304 (Profibus DP), VW3A3308 (Ethernet/IP + Modbus TCP), and VW3A3310 (PROFINET IO). This plug-in card architecture means a single drive frame can be reconfigured for different plant DCS/SCADA environments without hardware replacement of the main drive unit.

The ATV61 series entered its end-of-commercialization phase, with Schneider Electric designating the Altivar Process ATV600 as the recommended migration path. However, the ATV61 remains in active service across thousands of installations with design lives extending to 2035+, creating sustained demand for spare drives, control boards, and power modules.

ATV61 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked models across the ATV61 range. Classification follows functional category.

Variable Speed Drives — 400 V Three-Phase (N4 Suffix)

• ATV61HU15N4: 1.5 kW / 400 V, 3-phase input, IP20, integrated EMC filter, standard frame size 1.
• ATV61HU22N4: 2.2 kW / 400 V, 3-phase, IP20, built-in braking transistor, frame size 1.
• ATV61HU30N4: 3 kW / 400 V, 3-phase, IP20, SVC motor control, frame size 1.
• ATV61HU40N4: 4 kW / 400 V, 3-phase, IP20, integrated EMC filter + braking transistor, frame size 2. (Current SKU)
• ATV61HU55N4: 5.5 kW / 400 V, 3-phase, IP20, pump/fan dedicated firmware, frame size 2.
• ATV61HU75N4: 7.5 kW / 400 V, 3-phase, IP20, frame size 2, supports PID multi-pump control.
• ATV61HD11N4: 11 kW / 400 V, 3-phase, IP20, frame size 3, enhanced thermal management.
• ATV61HD15N4: 15 kW / 400 V, 3-phase, IP20, frame size 3, dual PID loop capability.
• ATV61HD18N4: 18.5 kW / 400 V, 3-phase, IP20, frame size 3, anti-cavitation logic standard.
• ATV61HD22N4: 22 kW / 400 V, 3-phase, IP20, frame size 4, internal braking transistor included.
• ATV61HD30N4: 30 kW / 400 V, 3-phase, IP20, frame size 4, requires external braking resistor above 22 kW.
• ATV61HD45N4: 45 kW / 400 V, 3-phase, IP20, frame size 5, suitable for large centrifugal pump arrays.
• ATV61HD55N4: 55 kW / 400 V, 3-phase, IP20, frame size 5, high-inertia fan load rated.
• ATV61HD75N4: 75 kW / 400 V, 3-phase, IP20, frame size 6, forced-air cooling, modular power stage.
• ATV61HC11N4: 110 kW / 400 V, 3-phase, IP20, frame size 7, cabinet-mount configuration, common DC bus capable.
• ATV61HC16N4: 160 kW / 400 V, 3-phase, IP20, frame size 7, parallel IGBT modules, field-replaceable power cells.

Communication Option Cards

• VW3A3304: Profibus DP option card, compatible with all ATV61 frame sizes, plug-in installation.
• VW3A3308: Ethernet/IP + Modbus TCP dual-protocol card, RJ45 interface, supports EDS file integration.
• VW3A3310: PROFINET IO card, conformance class B, supports MRP ring redundancy.

Sourcing Hard-to-Find & Obsolete ATV61 Parts

Available support categories include: complete drive units (new-surplus and reconditioned), control boards (VFD main control PCBs), IGBT power modules (frame-size matched), display terminals (VW3A1101, VW3A1006), and communication option cards. All units are cross-referenced against Schneider Electric's internal part number database to confirm frame compatibility before dispatch.

Quality Control for the ATV61 Range

Each ATV61 unit processed by DriveKNMS undergoes a structured verification protocol prior to dispatch. The procedure covers: incoming visual inspection (capacitor condition, bus bar integrity, IGBT gate driver board), powered functional test at rated voltage with resistive load bank, firmware version verification and parameter reset to factory defaults, communication card slot continuity check, and output waveform analysis via oscilloscope (THD measurement at 50 Hz carrier frequency baseline).