Schneider ATV320U22N4C Replacement/Upgrade for Altivar 320

Product Overview

Schneider ATV320U22N4C Replacement/Upgrade for Altivar 320: Seamless Transition from Legacy VFD Systems

The Schneider Electric ATV320U22N4C is a 2.2 kW, 3-phase 380–500 V AC variable frequency drive from the Altivar 320 series, featuring an integrated CANopen communication port and a compact bookshelf form factor. For facilities running aging Altivar 312, Altivar 31, or earlier Altivar 18 drives, the ATV320U22N4C represents a direct upgrade path that preserves existing wiring infrastructure, control cabinet footprint, and motor cabling — dramatically reducing retrofit downtime and engineering cost.

At TOPNLMS, we stock the ATV320U22N4C as a verified replacement unit, pre-tested before shipment, and backed by a 12-month warranty. Whether you are responding to an unplanned drive failure on a production line or executing a planned modernization of a legacy conveyor, pump, or fan control system, this unit ships from our Xiamen warehouse with full documentation and commissioning support.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful migration from an Altivar 312 or Altivar 31 installation to the ATV320U22N4C typically involves more than swapping the drive itself. In practice, engineers working on these retrofits also address the surrounding control architecture to ensure the new drive integrates cleanly into the existing system.

On the communication side, facilities that previously relied on Modbus RTU over RS-485 can continue using that protocol on the ATV320U22N4C without any gateway hardware. However, sites upgrading to a CANopen network — for example, connecting to a Schneider Electric Modicon M241 or M251 logic controller — will find the ATV320U22N4C’s integrated CANopen port eliminates the need for an external VW3A3608 CANopen communication card that was required on older Altivar 312 units. This simplifies cabinet wiring and reduces the number of components that need to be stocked as spares.

For installations where the ATV320U22N4C is being installed into an existing Altivar 320 rack or multi-drive cabinet, the VW3A9101 mounting kit and associated DIN rail accessories remain compatible. Engineers replacing multiple drives in a single cabinet often pair the ATV320U22N4C with the ATV320U15N4C (1.5 kW) or ATV320U40N4C (4.0 kW) units on adjacent axes, maintaining a uniform Altivar 320 platform across the machine and simplifying spare parts management.

On the I/O side, sites that use external signal conditioning — such as a Schneider Electric XMLA pressure transmitter or a third-party 4–20 mA flow sensor — will find the ATV320U22N4C’s analog input specification directly compatible, requiring no signal isolator or loop-powered converter in most cases. Where legacy installations include a Zelio Logic smart relay or a Twido compact PLC providing run/stop and speed reference signals via discrete outputs, the ATV320U22N4C’s 24 V DC logic input threshold is identical to the ATV312, so no relay interposing is required.

For sites that use the SoMove PC commissioning tool, parameter sets exported from an ATV312 can be imported into the ATV320 profile with field-level review, significantly reducing the time required to replicate acceleration ramps, motor nameplate data, fault response settings, and PID loop parameters. Engineers who previously used the ATV312’s RJ45 programming port with a VW3A8106 USB/RJ45 cable can use the same cable with the ATV320U22N4C, as the physical connector and communication protocol are unchanged.

In applications where the legacy drive was mounted inside a Prisma or Okken MCC panel with a dedicated drive drawer, the ATV320U22N4C’s bookshelf dimensions and standard mounting hole pattern allow direct substitution without panel modification. Power terminals accept the same cable cross-sections (up to 6 mm² for line and motor connections), so existing cable lugs and ferrules can be reused.

Retrofit Guidance FAQ

Q: Can I reuse the existing motor cable when replacing an ATV312H022N4 with the ATV320U22N4C?
A: Yes. The ATV320U22N4C uses the same U/V/W output terminal arrangement and accepts the same cable cross-sections. Provided the cable is rated for the motor’s full-load current and the installation distance is within the drive’s dV/dt tolerance (typically up to 50 m without output filter for standard induction motors), no cable changes are required.

Q: Will my existing Modbus RTU program work without modification?
A: In most cases, yes. The ATV320 Modbus register map is largely compatible with the ATV312 for standard control words, speed reference, and status words. However, some extended parameter addresses differ. We recommend reviewing the ATV320 Modbus communication manual (BBV46385) against your existing PLC program before go-live.

Q: How do I migrate CANopen node configuration from an older drive?
A: The ATV320U22N4C supports CANopen DS402 profile. Node ID and baud rate are set via the drive’s HMI or SoMove. If your CANopen master (e.g., a Modicon M241 with TM241CEC24T CPU) was configured for the previous node, simply assign the same node ID to the ATV320U22N4C and the master will recognize it without re-commissioning the network.

Q: Does the ATV320U22N4C fit in the same cabinet cutout as the ATV312?
A: The ATV320U22N4C has a very similar bookshelf footprint. In most standard control cabinets, it mounts on the same DIN rail position without requiring new cutouts or bracket modifications. Verify the depth clearance (approximately 149 mm) against your cabinet door clearance before installation.

Q: What happens to my motor protection settings during the swap?
A: Motor thermal protection parameters (motor rated current, thermal time constant, overload class) must be re-entered on the ATV320U22N4C. These are not automatically transferred. Use SoMove to document the existing ATV312 motor parameters before removal, then apply them to the ATV320 during commissioning.

Q: Can the ATV320U22N4C replace an ATV18 or earlier Altivar series drive?
A: Yes, with wiring adaptation. The ATV18 used a different terminal layout and lacked CANopen. A wiring diagram review is required, but the electrical characteristics (voltage, current, motor compatibility) are equivalent for 2.2 kW applications.

Warranty Assurance

Every ATV320U22N4C unit shipped by TOPNLMS undergoes a pre-shipment functional test covering power-on self-check, control terminal continuity, communication port verification, and parameter default confirmation. Units are shipped in original or equivalent protective packaging with full documentation.

Our 12-month warranty covers manufacturing defects and functional failures under normal operating conditions from the date of shipment. In the event of a warranty claim, TOPNLMS provides replacement unit dispatch or repair coordination within 5 business days of fault confirmation. We do not require the customer to return the unit before dispatching a replacement in urgent production-down situations — contact us to discuss expedited handling.

For procurement teams requiring traceability documentation, we can provide shipment records, test reports, and product origin certificates upon request. Bulk orders (3+ units) qualify for priority allocation and consolidated shipping to reduce per-unit freight cost.

For technical pre-sales questions, compatibility verification, or urgent replacement inquiries, contact our engineering team directly.