ACS890 SeriesModular Drive SystemHigh-Power VFD for System Integration

ACS890 is designed for demanding industrial systems that need flexible power conversion and coordinated motor control. Typical applications include rolling mills, coilers and shears; marine propulsion, winches and deck machinery; tunnel-boring cutterheads and conveyors; oil and gas drilling; and motor or drivetrain test benches.

It also supports precision machine tools, paper and web-handling lines, rubber and plastics machinery, flywheel energy storage and other engineered energy-conversion systems. The power stage, motor-control mode and cooling arrangement are selected for the actual operating cycle.

Yes. ACS890 can be engineered as an alternative to ABB, Siemens or VACON drive systems in suitable high-power, regenerative, common-DC-bus and multi-motor applications. INOMAX has experience with industrial projects replacing established drive brands.

For a retrofit, send the existing drive model, motor nameplate and basic application requirements. We review current and overload ratings, supply and DC-link voltages, PLC communication, encoder feedback, cooling and cabinet space, then propose the ACS890 configuration and required installation changes. Replacement is evaluated at system level; matching the kW rating alone is not sufficient.

A conventional standalone VFD combines most drive functions in one unit. ACS890 separates the control unit, feedback interfaces and power modules, allowing the system designer to choose motor inverters, rectifiers, active front ends, DC/DC converters and braking units around a shared architecture.

This is useful when a project needs a common DC bus, energy regeneration, several coordinated motors, parallel power modules or a custom cabinet arrangement. It lets the power and control configuration follow the machine's requirements.

Key functions include sensorless control, standstill and rotating motor identification, deep field weakening, torque/speed/position master-follower control, multi-motor coordination and flying start. These functions address motor tuning, extended speed ranges, load sharing and restarting an already-spinning load.

FLYLINK specifies less than 10 ns inter-node clock difference and approximately 2.5 μs average node data exchange. Flying-start search is approximately 30 ms for induction motors and 5 ms for PMSMs. These are network and search-stage figures; final machine performance depends on the motor, feedback, load and commissioning.

The catalog includes 400 V and 700 V AC-class platforms, with three-level liquid-cooled configurations at 900 V and 1140 V. The 700 V class includes code -7 / 690 V applications. Project-engineered systems also cover 3.3 kV, 6 kV and 10 kV architectures.

Power depends on the module, voltage, cooling and permitted parallel arrangement. The catalog's up-to-4-MW-per-cabinet figure specifically applies to its 3.3 kV liquid-cooled three-level configuration. Use the module selector for individual ratings, then size the complete drive by motor current, overload duty and operating conditions.

ACS890 supports squirrel-cage and wound-rotor induction motors, surface-mounted and interior permanent-magnet synchronous motors, PM-assisted synchronous reluctance motors and electrically excited synchronous motors. Applicable configurations also cover linear motors, disc-rotor motors and 6-, 9- or 12-phase machines.

Open-loop or closed-loop operation is selected for the duty. TTL, HTL, resolver, SinCos and absolute-encoder interfaces provide feedback options for applications with demanding speed, torque or positioning requirements.

Yes. A suitable ALM / active front end enables controlled energy flow between the AC supply and DC link, including returning regenerated energy to the grid. A common DC bus connects the selected motor and power-conversion branches within one coordinated system.

This architecture is relevant to test benches, coilers, hoisting, marine and energy-conversion duties. The design includes the appropriate grid filter, precharge and feedback arrangement. Where energy is dissipated in resistors, a BRK module and resistor bank are sized for the braking power and thermal duty.

Yes. The catalog specifies 1–4 coordinated motors and 1–16 suitable inverter or AFE power units in parallel. These are separate limits: paralleling modules increases the power stage, while multi-motor control coordinates the loads. Master-follower functions support torque sharing and speed or position following.

Parallel rules depend on the topology. Integrated drives do not support module paralleling; BLM/SLM require individual AC reactors, DC/DC requires the specified DC LC filters, and direct paralleling of braking modules is prohibited. INOMAX reviews the complete arrangement during selection.

Choose air cooling when the cabinet layout and ventilation can remove the required heat and the installation benefits from an air-cooled arrangement. Consider liquid cooling for high-power systems where cabinet space, heat removal or the existing cooling infrastructure makes it appropriate, including marine and large industrial installations.

Availability depends on voltage class and frame. For liquid-cooled selection, provide the coolant conditions and available heat-rejection capacity; for air-cooled selection, provide ambient temperature and cabinet ventilation conditions.

The platform lists PROFINET RT / IRT, EtherCAT, EtherNet/IP, CANopen, Modbus TCP and Modbus RTU, with PROFIBUS DP through expansion. Protocol availability depends on the selected control unit and interface option. Digital and analog I/O expansion, encoder adapters and AC/DC grid-sensing modules support machine integration.

Commissioning through Ethernet supports several control units from one PC. The diagnostic functions record 12 waveform channels at 4,000 samples per second, replay recordings, compare drives on one time axis and compare parameter settings online or offline. Wi-Fi and remote access use a configured router or gateway.

Standard module orders and complete custom cabinets are scheduled separately. Module availability, order quantity, cooling equipment, cabinet assembly and factory testing all affect the manufacturing period; the current ACS890 schedule is confirmed with the selected configuration and technical approval.

For reference, previous INOMAX project schedules include approximately two weeks for a regenerative-drive project and a quoted 4–6 weeks for liquid-cooled marine cabinets. These are project references, not a fixed lead time for every ACS890 order. Send your required delivery or shutdown date so we can propose a production schedule; transport time is quoted separately.

INOMAX provides a standard two-year warranty. The quotation and order documents state the warranty start date, coverage and service arrangements for the supplied ACS890 modules or cabinet system.

Our technical team supports troubleshooting and remote diagnosis. For large systems, the project can also define a spare-parts package and service plan to support maintenance and reduce downtime.

Yes. INOMAX can work with system integrators, equipment manufacturers and project contractors on module selection, complete cabinet configurations and OEM requirements. The scope can include power conversion, cooling, reactors or filters, precharge, braking, control interfaces and enclosure requirements.

Specify whether you need modules for your own cabinet design or an assembled drive system. We then define the electrical and mechanical interfaces, documentation, testing and delivery scope for the project.

INOMAX provides application selection support, technical clarification and remote commissioning assistance. Our team can help review the motor data, power architecture, PLC and encoder interfaces, parameter settings and operating waveforms.

On-site commissioning, training and spare-parts arrangements can be discussed for the project and included in the agreed service scope. Send the application requirements early so the drive configuration and support plan can be developed together.

Yes. The full ACS890 catalog is available through this page. Request hardware manuals, installation dimensions, CAD / STEP drawings and applicable certificate documents against your selected module or cabinet configuration.

For marine projects, tell us the required classification society and approval scope. The catalog lists CCS and RS among company credentials; the supplied product's certification must match the models and conditions stated in the relevant certificate.

Start with the application, supply voltage, motor nameplate, motor quantity and required speed range. Add the overload or operating cycle, whether regeneration is required, the cooling preference and the PLC or encoder interface if known.

For a replacement, include the existing drive model and photos of the nameplate and cabinet. You can use the module selector to build a shortlist, but it is not necessary to choose a final model before contacting INOMAX. Our engineering team can recommend the configuration from your project requirements.