Danfoss VACON ® NXP and VACON ® NXC series AC frequency converter

This document is from Danfoss regarding VACON ®  NXP and VACON ®  The technical selection guide for NXC series AC frequency converters was released in January 2019, focusing on the motor variable speed control requirements in industrial scenarios. The product covers a power range of 0.55 kW to 2 MW, adapts to multiple voltage levels, provides diverse installation forms and rich functional options, meets international safety and EMC standards, and can meet the basic and demanding application needs of multiple industries such as mining, lifting machinery, oil and gas. At the same time, it is equipped with full lifecycle technical support and services.

Detailed explanation of core product series

（1） VACON ®  NXP series

Positioned as a flexible frequency converter, it offers three installation forms and is suitable for low to high power scenarios:

Product Type Key Features Power Range Protection Level Typical Applications

Wall mounted integrated EMC filter, built-in brake chopper (FR4-FR6) 0.55 kW -710 kW IP21, IP54 elevators, lifting machinery, pumps and fans

Modular (IP00) compact design, supporting cabinet integration of 200 kW – 1200 kW IP00 high-speed compressor, testing bench

Independent enclosed enclosure, built-in fuse 160 kW -400 kW IP21, IP54 main thruster, compressor

Core advantages:

Control flexibility: Supports induction/permanent magnet motors, open-loop/closed-loop vector control (speed accuracy 0.01%)

Expansion capability: 5 built-in expansion slots, supporting direct insertion of I/O, fieldbus and other option boards

Functional safety: Standard STO (SIL2), optional SS1 safety stop function

Environmental adaptation: DC cooling fan (compliant with ERP2015), circuit board protective coating (FR7-FR14)

（2） VACON ®  NXC series

Positioned as a heavy-duty cabinet style frequency converter, specifically designed for harsh industrial environments:

Product Type Key Features Power Range Protection Level Typical Applications

Standard cabinet style welded Rittal TS8 rack, EMC certified 110 kW – 2000 kW IP21, IP54 mining, wastewater treatment, extruder

Low harmonic cabinet type THDi<5%, regenerative braking function 110 kW -1800 kW IP21 pump and fan, sugar factory

Core advantages:

Sturdy structure: heat treated box, suitable for harsh environments such as dust and humidity

Easy to maintain: power supply unit slide rail installation, fan can be independently replaced

Low harmonic characteristics: No need for dedicated transformers, input current harmonics are less than 5%

Flexible wiring: Supports top/bottom cable input, ample space for power terminals

Key technical parameters and performance

Category specific parameters

Power Characteristics Input Voltage: 208-240 V/380-500 V/525-690 V (± 10%)

Input frequency: 45-66 Hz

Overload capacity: Low overload (+40 ℃) 1.1 times/1 minute; High overload (+50 ℃) 1.5 times/1 minute

Control performance output frequency: 0-320 Hz

Speed accuracy: open-loop 0.5%, closed-loop 0.01%

Acceleration/deceleration time: 0-3000 seconds

Environmental conditions: Operating temperature: -10 ℃ (no frost)~+50 ℃

Relative humidity: 0-95% (without condensation)

Altitude: ≤ 1000 m (100% load), with a 1% reduction in capacity for every 100 m increase

Safety and EMC Functional Safety: STO (EN/IEC 61800-5-2 SIL2), SS1 (PL “d”)

EMC level: C1/C2/C3 (EN 61800-3), IT grid adaptation type (T level)

Core functions and options

Communication and control functions

Standard Ethernet protocols: PROFINET IO, EtherNet/IP, Modbus/TCP

Optional fieldbus: PROFIBUS DP, DeviceNet, CANopen

Software tool: VACON ®  NCDrive (Parameter Configuration/Monitoring), Document Wizard (Automatically Generate Drawings)

Key options

I/O Expansion: Basic I/O Board (OPT-A Series), Expansion I/O Board (OPT-B Series)

Communication Expansion: Fieldbus Board (OPT-C Series), System Bus Adapter (OPT-D Series)

Auxiliary equipment: brake chopper, motor heater feeder, cabinet heater

Safety option: ATEX certified thermistor input (monitoring motor temperature in explosive environments)

Energy Saving and Environmental Protection

Low harmonic design: reduces grid interference and lowers transformer/cable specification costs

Regenerative braking: Feedback braking energy to the power grid, saving energy

Efficient cooling: DC fan reduces losses and complies with ERP2015 directive

Service and Support

Global service: 7×24 hour technical support to minimize downtime to the greatest extent possible

Tool support: VACON ®  NCDrive (PC parameter management), Document Wizard (engineering drawing generation)

Spare parts guarantee: modular design, reducing spare parts inventory with the same components

Certification compliance: Complies with international standards such as CE, UL, CUL, and industry certifications such as ATEX and CMAA